PSU recommendation for RTX 5090

[oxrufiioxo]

TLDR:
- the PSU is more than adequate for the 5090
- 2x8 sockets on the PSU are not a problem
- ATX 3.0 > ATX 3.1
- the cable might be questionable, need to check what is the pin type and investigate other concerns

My advice is to be calm and not proceed with panic. It's not like you have a 24h return window. Or do you?
You could ask Aris on hwbusters about your concerns and he would most probably respond within a few hours.

Good points and Very good advice

 

[Carsomyr]

There is nothing wrong with the Super Flower PSU.
See post #4 in this thread. Also about your concerns regarding the wire thickness, look at the Seasonic Prime 1600.

Additional links:

No More 12VHPWR Connector! Say hi to 12V-2×6 - Hardware Busters

Hardware Busters - No More 12VHPWR Connector! Say hi to 12V-2×6 - News

hwbusters.com

How to Select a new PSU with the upcoming 12VHPWR change? - Hardware Busters

Hardware Busters - How to Select a new PSU with the upcoming 12VHPWR change? - PSUs

hwbusters.com

Evolving Standards: 12VHPWR and 12V-2x6

With the introduction of the RTX 40-Series, the PCIe 5.0 12VHPWR GPU power connector made its debut with the promise to deliver up to 600W of power through a single connector. As with any new standard, things are likely to evolve quickly and we’re now seeing the introduction of a new connector...

www.corsair.com

Native 12V-2x6 vs 8-pin to 12V-2x6 – what is the difference?

The difference is purely in the connector on the power supply, but let us take a look at the different ways these can connect to your PSU.

www.corsair.com

Having 2x8 pin instead of 12V-2x6 on the PSU is a non-issue.
The problem is the original connector the 12VHPWR one. The SF unit doesn't have that and neither does the 5090.
The only issue might be the cable pins.
See video below:

Even if the SF unit would have a cable with double dimple pins instead of leaf spring pins why would you return a good PSU for a cable that isn't the latest and greatest? You could just get a newer cable if indeed it's of older design.
Also it's not like the old cable is faulty per se, it's just that it gets looser faster, but that would require constant inserting and reinserting.
12V-2x6 refers to the socket connector on the PSU and the GPU and not the cable connectors.
There are differences between cables as per the JTC video, but there's no actual spec that I know of, in the same way as for the 12VHPWR socket and the 12V-2x6 socket.
The two missing pins on the 12V-2x6 that goes into the GPU are sense pins and they don't matter (Aris said it in the review), the two missing pins on the 8 pin connectors, well I don't know about those, I've seen connectors missing one, I don't know the specifics.
You could use the "octopus" and be done with it.

Then SF themselves are lying, towards the bottom of the page it says 200%.

LEADEX VII XG 1300W ATX3.0 / ATX3.1 (BK) | SUPER FLOWER

Please contact the distributor in your country for the availability and quotation

www.super-flower.com.tw

TLDR:
- the PSU is more than adequate for the 5090
- 2x8 sockets on the PSU are not a problem
- ATX 3.0 > ATX 3.1
- the cable might be questionable, need to check what is the pin type and investigate other concerns

My advice is to be calm and not proceed with panic. It's not like you have a 24h return window. Or do you?
You could ask Aris on hwbusters about your concerns and he would most probably respond within a few hours.

When you say

"the problem is the original connector the 12VHPWR one."

You mean the cable itself?
The connector on the cable?
Or the connector in the gpu itself (pcb)?

edit: I just found out what the "octopus" is lol. Indeed, that looks like a safer option right now for this specific psu. I'll look into it

Anyhow, I went and posted on the hwbusters forum, I'll report back here if Aris replies. I saw on the corsair website a cable similar to mine, but it has all 8 pins instead of just 6 like mine:
(picture from this link: https://www.corsair.com/uk/en/p/pc-...e-gen-5-12v-2x6-600w-cable-type-5-gen-5-black)

 

[oxrufiioxo]

en you say

"the problem is the original connector the 12VHPWR one."

You mean the cable itself?
The connector on the cable?
Or the connector in the gpu itself (pcb)?

I think he's talking about the original plug on the 4090.

The thing with a 5090 is everything has to be good psu side plug the cable and even the 5090 due to Nvidia in their infinite wisdom not having proper load balancing for each pin.

Just make sure the cable is in good condition and firmly seated and you should be golden.

If you're worried I'd honestly grab a wireview pro over swapping power supplies. Whichever varient works best with your setup.

Thermal Grizzly 90° WireView Pro GPU Power Monitoring Device

Thermal Grizzly 90° WireView Pro GPU: Power measurement device for graphics cards with temperature sensors and OLED display.

www.thermal-grizzly.com

 

[Carsomyr]

yeah well for me... 80c max temp rating on a 600w cable seems a bit low
I unboxed the whole thing and I was expecting a few more cables.

Its definetly a good price/performance ratio for the super flower leadex vii no argument there.
But as a long term high quality solution for a 3-4K$ graphics card, I feel just enougn unease to pull the plug on it.

I'm returning the leadex vii, I'll be switching to something better. I'll report back once I bought the other unit

 

[Space Lynx]

Yeah it's weird. I checked the provided cable and took pictures. I don't like that it's 16ga (cable) and rated for 80c. What do you think? Right now I'm debating whether I should return it and get something else. If I can't trust the product page item description on Newegg... How can I be sure I'm buying the right psu?! View attachment 399574

I don't like the look of that cable personally, gives me bad vibes.

I think you should do a Corsair unit with the latest cable design, or the Montech Titan (Seasonic) I linked before 1200w $229 shipped and sold by Amazon.

https://www.techpowerup.com/forums/threads/psu-recommendation-for-rtx-5090.336595/post-5514627 this one here or a higher end Corsair unit, these are the only two i'd be willing to buy to work with a 5090 anyway, but it's your money

 

[AleXXX666]

I found a good deal on the Super Flower Leadex VII XG 1300W Power Supply, ATX 3.1 Compatible.

Should I pull the trigger or should I aim higher?
For PSUs Like the Seasonic PRIME TX-1600 Noctua Edition?

Aside from the fact that the super flower doesn't have braided cables... Are there other major issues to consider?

for noctua edition you will overpay a good extra. obvious. 1300w is plenty, if you won't pair 5090 with some dual-cpu combo...

 

[Space Lynx]

My friend just did a 5080 build a Montech Seasonic OEM PSU and really loved it. All the reviews, tweaktown and other sites say Montech Seasonic OEM PSU's are top tier. So yeah, you really should consider the Montech TITAN 1200w for $229 - read reviews and decide for yourself imo

 

[Sol_Badguy]

When you say

"the problem is the original connector the 12VHPWR one."

You mean the cable itself?
The connector on the cable?
Or the connector in the gpu itself (pcb)?

I mean the female connector that was on GPUs prior to 50 series and on the back of the PSU.
That was subject to change.

The male connectors on the cable were not part of this change.
The difference with double dimple, triple dimple, leaf spring and such is a separate matter and as far as I know there is no spec regarding this.
This was apparently a design deficiency that was addressed (or perhaps not) along the way however each manufacturer saw fit.

I'm not sure if every cable from every manufacturer for every 3.1 & 5.1 PSU (those with native 12V-2x6) is exactly the same -> the leaf spring design in the JTC video.

Another problem with this 12V-2x6 connector apart from the thickness of the wires (relative to the maximum load) and the lack of safety features on the GPU pcb is the rigidity of the connection.
On the GPU side there is no way of having different rigidity, and on the GPU side there are the greatest risks (yes this is by design), on the PSU side however you can have greater rigidity using 2x8 pin sockets or by using the "octopus" have maximum rigidity using 4x8 pin sockets at the expense of cable clutter.

 

[Carsomyr]

My friend just did a 5080 build a Montech Seasonic OEM PSU and really loved it. All the reviews, tweaktown and other sites say Montech Seasonic OEM PSU's are top tier. So yeah, you really should consider the Montech TITAN 1200w for $229 - read reviews and decide for yourself imo

Jonnyguru disapproves 100% when it comes to that montech psu. Spoke at length with him yesterday about it. Thanks for the recommendation, but it's a hard pass for me

 

[Sol_Badguy]

I mean the female connector that was on GPUs prior to 50 series and on the back of the PSU.
That was subject to change.

Early 4090s. My bad.
The rest of the 40 series had the new 12V-2x6 and 30 series had something similar to the 12VHPWR but not quite the same implementation as on early 4090s.

Anyway continuing what I said above about the "octopus" adapter which is bundled with the GPU, I'm not sure if all of these adapters, regardless of GPU mfg., are the same when it comes to pin receptacles.

ATX v3.1 & PCIe CEM 5.1 are official! - Hardware Busters

Hardware Busters - ATX v3.1 & PCIe CEM 5.1 are official! - PSUs

hwbusters.com

I see there some images with the male connectors, and it seems like there are two valid options regarding pin receptacles, triple dimple and leaf spring.
So it kind of seems that the male connectors were also subject to some change, perhaps the double dimple design was used on prior 450W cables???
It's curious that trustworthy sources (hwbusters, Corsair etc.) keep saying the cables are the same, the 600W cables are different from 450W ones, but are all 600W cables in-spec and thus "the same"? Obviously a triple dimple is not the same as leaf spring one, also a double native 16 pin one is not the same as 16 pin to 2x8 pin.

H+ vs H++ on 12V-2x6 / 12VHPWR cables: What does it mean?

Does H++ or H+ have any meaning when it comes to your 12V-2x6 cable?

www.corsair.com

So just marketing then?
Otherwise why would Corsair risk its reputation by spreading misinformation?
I feel compelled to believe them.

I have no idea. Here I took a Better picture of the cable that came with the PSU
Notice how the 2x8 pin connectors are actually 2x6 (2 of the 8 pins are absent)
View attachment 399591

https://overclock3d.net/reviews/psus/super-flower-leadex-vii-gold-white-1000w-and-1300w-psu-review/

It's the same cable as yours. It says H+ on the side (see picture with coiled cable)
I've looked online and the 8 pin GPU connector has only 3 live wires, the rest are ground. So the two missing are apparently fine, there are 3 live and 3 ground. The missing ones are probably related to the fact that one end has a 16 pin connector and the other 2x8 pin, but the live wires are not affected.

https://www.reddit.com/r/nvidia/comments/1jytztq/if_you_are_using_5090_with_leadex_vii_platinum

LEADEX VII Platinum PRO 1200W ATX 3.1 (BK) | SUPER FLOWER

www.super-flower.com.tw

The SF 1200W Platinum Pro model apparently is problematic, but that has new 9 pin sockets on the back.
So this situation should not be imply that SF PSUs in general are problematic.

Based on what info was presented in this thread until now, in my opinion the SF 1300W XG is safe for a 5090, either with the included cable (yes that cable) or using an "octopus" adapter.

Man, nVidia really effed everyone with this, and the problem is that PSU mfgs and PCI-SIG didn't refuse to implement this garbage connector.
It's pure trash, no matter if MSI paints the insertable part yellow, no matter how many + signs are stamped onto it, it's trash by design.
Even if it had 14 gauge wires, the point of entry on the GPU is the weak link and nothing can be done to make it risk free, even if everything else is 100% safe and overbuilt, the way the connector is implemented on the GPU is a liability.

Whhoooossshhh, I am the sound effect!
^Keep sponsoring this **** and in a few years this situation will seem a joke compared to what he'll cough up next.

 

[Space Lynx]

Jonnyguru disapproves 100% when it comes to that montech psu. Spoke at length with him yesterday about it. Thanks for the recommendation, but it's a hard pass for me

I had no idea, interesting. It has great reviews on other sites.

He does work for Corsair, so if you trust his opinion so much, you should probably go Corsair. I also trust his opinion, which is why I have a Corsair. So, why are you even looking at other brands still?

 

[Carsomyr]

Early 4090s. My bad.
The rest of the 40 series had the new 12V-2x6 and 30 series had something similar to the 12VHPWR but not quite the same implementation as on early 4090s.

Anyway continuing what I said above about the "octopus" adapter which is bundled with the GPU, I'm not sure if all of these adapters, regardless of GPU mfg., are the same when it comes to pin receptacles.

ATX v3.1 & PCIe CEM 5.1 are official! - Hardware Busters

Hardware Busters - ATX v3.1 & PCIe CEM 5.1 are official! - PSUs

hwbusters.com

I see there some images with the male connectors, and it seems like there are two valid options regarding pin receptacles, triple dimple and leaf spring.
So it kind of seems that the male connectors were also subject to some change, perhaps the double dimple design was used on prior 450W cables???
It's curious that trustworthy sources (hwbusters, Corsair etc.) keep saying the cables are the same, the 600W cables are different from 450W ones, but are all 600W cables in-spec and thus "the same"? Obviously a triple dimple is not the same as leaf spring one, also a double native 16 pin one is not the same as 16 pin to 2x8 pin.

H+ vs H++ on 12V-2x6 / 12VHPWR cables: What does it mean?

Does H++ or H+ have any meaning when it comes to your 12V-2x6 cable?

www.corsair.com

So just marketing then?
Otherwise why would Corsair risk its reputation by spreading misinformation?
I feel compelled to believe them.

https://overclock3d.net/reviews/psus/super-flower-leadex-vii-gold-white-1000w-and-1300w-psu-review/

It's the same cable as yours. It says H+ on the side (see picture with coiled cable)
I've looked online and the 8 pin GPU connector has only 3 live wires, the rest are ground. So the two missing are apparently fine, there are 3 live and 3 ground. The missing ones are probably related to the fact that one end has a 16 pin connector and the other 2x8 pin, but the live wires are not affected.

https://www.reddit.com/r/nvidia/comments/1jytztq/if_you_are_using_5090_with_leadex_vii_platinum

LEADEX VII Platinum PRO 1200W ATX 3.1 (BK) | SUPER FLOWER

www.super-flower.com.tw

The SF 1200W Platinum Pro model apparently is problematic, but that has new 9 pin sockets on the back.
So this situation should not be imply that SF PSUs in general are problematic.

Based on what info was presented in this thread until now, in my opinion the SF 1300W XG is safe for a 5090, either with the included cable (yes that cable) or using an "octopus" adapter.

Man, nVidia really effed everyone with this, and the problem is that PSU mfgs and PCI-SIG didn't refuse to implement this garbage connector.
It's pure trash, no matter if MSI paints the insertable part yellow, no matter how many + signs are stamped onto it, it's trash by design.
Even if it had 14 gauge wires, the point of entry on the GPU is the weak link and nothing can be done to make it risk free, even if everything else is 100% safe and overbuilt, the way the connector is implemented on the GPU is a liability.

Whhoooossshhh, I am the sound effect!
^Keep sponsoring this **** and in a few years this situation will seem a joke compared to what he'll cough up next.

Yeah I believe the super flower is an EXCELLENT psu but it looks like they're using cheap 80c rated cables. Might be the reason

I had no idea, interesting. It has great reviews on other sites.

He does work for Corsair, so if you trust his opinion so much, you should probably go Corsair. I also trust his opinion, which is why I have a Corsair. So, why are you even looking at other brands still?

Great question. I was looking at other solutions because all the corsair units I could find were quite expensive. They're not in sale often. They're great PSUs no doubt but they're starting to jack their prices due to their sitting in their fame (sand thing Asus has been doing these last few years, Asus is milking it hard and abusing it too)

I was simply looking for the best deal for my money... And according to all the material I could find, the superflower Leadex vii XG 1300w was the best deal for the money.

That being said, the one I bought is the 1300w one, not the 1200w platinum one that reddit user refers to. Although I suspect the same issues might be present

 

[Sol_Badguy]

Yeah I believe the super flower is an EXCELLENT psu but it looks like they're using cheap 80c rated cables.

About the cables I am definitely not knowledgeable/competent enough to clear those doubts.
But I did find more info, please have a look especially at post #8:

Question - XfX 7900xtx speedster merc 310 triple 8 pin connection

Would it be best to use three separate pcie cables or use a 3 way splitter? Does it even matter? Would there still be equal power delivery with either option?

forums.tomshardware.com

I will also add that I don't think you'll find 12+4 cables with wires thicker than 16 gauge.
The few reviews of big wattage PSUs I have read all mentioned 16 gauge.
Regardless what cable (12+4 to 2x8) you find all will have the same 3 x 12V wires per 8 pin connector (even if all holes are populated).
Also see here, further down the page at the Q&A section, question no. 3.

Amazon.com

Also this Corsair cable:

12VHPWR Cable | 600W PCIe 5.0 Power Adapter Cable

The official CORSAIR 600W PCIe 5.0 / Gen 5 12VHPWR PSU Power Cable delivers power from CORSAIR Type-4 PSUs to the most advanced PCIe 5.0 graphics cards.

www.corsair.com

It is a 12+2 actually, just like the SF one, however the 8 pin connectors have contacts in all holes and even if we don't see the back of the connector, we see how many wires go into it, only 6. Most likely the other two are looped together to provide the overcurrent protection just like the Fasgear cable above.
And finally this one:

Premium Individually Sleeved 12+4pin PCIe Gen 5 12VHPWR 600W cable, Type 4, WHITE

The official CORSAIR Premium Individually Sleeved 600W PCIe 5.0 / Gen 5 12VHPWR PSU Cable delivers power from your CORSAIR Type-4 PSU to the most advanced PCIe 5.0 graphics cards.

www.corsair.com

Also 12+2, but when looking at the 8 pin connectors we can see a seventh thinner wire going all the way to the 12+4 connector's 2 sense pins.
This one looks like a good cable, I don't know about the temp rating though.

Now about the temperature rating, I suppose there are higher rated ones (105 from a cursory look), but I haven't seen the temperature rating specifically mentioned in reviews. Thus you would have to inquire more.

Further reading, also regarding pin receptacle types:

Rest in Peace 12VHPWR Connector - Welcome 12V-2×6 Connector, important modifications and PCIe Base 6 | Exclusive | igor´sLAB

The king is dead, long live the king. Or the other way around: The findings of the last few months are finally taken seriously and the connector is modified, work is done on a new standardization and…

www.igorslab.de

Since you've already made contact with knowledgeable people, try to run your final choice by them and get all aspects covered and all doubts cleared.

 

[dirtyferret]

Jonnyguru disapproves 100% when it comes to that montech psu. Spoke at length with him yesterday about it. Thanks for the recommendation, but it's a hard pass for me

what was Jon's reasoning as many Montech PSU get good reviews and they use well know OEMs/ODMs?

 

[Sol_Badguy]

Follow-up on my previous post.

About the temp rating:

https://help.corsair.com/hc/en-us/articles/19861588055437-PSU-Why-Is-My-CORSAIR-12VHPWR-Cable-Color-Slightly-Gray

Points for Corsair. Charging premium seems justified now.

About the 200% transient response tests:

Super Flower Leadex VII Gold 1300W (SF-1300F14XG) PSU Review - Page 5 of 11 - Hardware Busters

Hardware Busters - Super Flower Leadex VII Gold 1300W (SF-1300F14XG) PSU Review - PSUs

hwbusters.com

Passed, as expected. Case closed for me in this regard.

About missing pins:

https://help.corsair.com/hc/en-us/articles/27358102822669-PSU-Why-is-there-a-missing-Pin-on-my-PSU-cable

Response from jonnyguru:

Missing pins on power supply

Hey im new to pc gaming and have just bought the Corsair CX500M power supply. But when inspecting i can see that on the PCI-E cable where it plugs into the PSU one of the metal pins inside is missing on the actual cable. Is this normal?

forums.tomshardware.com

So the cable in question is most likely in-spec, but of the bottom of the barrel variety or thereabouts.

A chain is as strong as its weakest link.
Seems that SF didn't put the same effort into the 12+4 cable (can't comment on the other cables) as they did into the PSU unit itself.

I hope the info presented in this thread helps some people, I certainly could have used it before my own purchase decision, well I still have a return window, but I probably won't follow through because of extra expenses of returning.
F### it.

 

[Sunny and 75]

• be quiet! Power Zone 2 1000W ATX 3.1
• MSI MAG A1250GL PCIE5 1250W ATX 3.1
• MSI MPG A1250GS PCIE5 1250W ATX 3.1

 

[Dr. Dro]

As long as it's the new 12V-2X6 on the gpu side it's fine which it should be anyone with a 5090 should have a wireview pro anyways imho personality I wouldn't take any chances lol.

If I could get one. The 12VHPWR version of it has been out of stock god knows how long here.

The cables are the same, the connector is different or that's my understanding of the situation.

The Corsair article I shared above says the same from a cursory read.

View attachment 399575

Aris has a great article describing in detail the changes. H+ and H++ cables/terminals are interchangeable and compatible with one another, you may use an H++ cable on an H+ socket, and you can use an H+ cable on an H++ socket. These are mostly safety improvements to ensure continuity and overloading any individual terminal, which is what was causing H+ cables to malfunction. Furthermore, the updated specification changes the expected behavior for when sense pins 0 and 1 are open, this is mostly GPU-side: in the older specification, this would mean a 150 W power limit, on the new one, this cuts off power entirely, but it isn't a very common configuration, even on low end hardware with this connector.

No More 12VHPWR Connector! Say hi to 12V-2×6 - Hardware Busters

Hardware Busters - No More 12VHPWR Connector! Say hi to 12V-2×6 - News

hwbusters.com

I thought the unit I bought WAS the newer unit... But keep in mind I bought a super flower psu. NOT a corsair psu

As I mentioned earlier... there are only 2 types, H+ and H++. H++ is the new cable, and that's preferable... but it's not anywhere near as big of a deal as everyone is making it seem.

TLDR:
- the PSU is more than adequate for the 5090
- 2x8 sockets on the PSU are not a problem
- ATX 3.0 > ATX 3.1
- the cable might be questionable, need to check what is the pin type and investigate other concerns

My advice is to be calm and not proceed with panic. It's not like you have a 24h return window. Or do you?
You could ask Aris on hwbusters about your concerns and he would most probably respond within a few hours.

/thread

https://www.reddit.com/r/nvidia/comments/1jytztq/if_you_are_using_5090_with_leadex_vii_platinum

LEADEX VII Platinum PRO 1200W ATX 3.1 (BK) | SUPER FLOWER

www.super-flower.com.tw

The SF 1200W Platinum Pro model apparently is problematic, but that has new 9 pin sockets on the back.
So this situation should not be imply that SF PSUs in general are problematic.

Hm, interesting find, it got me curious. Unfortunately my Palit 5090 doesn't have the per-pin sense, I think only the Astral does. I'll have to wing it, but I haven't noticed anything wrong with the 1st gen Leadex and the CableMod E-series 3x 8-pin PSU-side to H+ cable I used since the 4080 thus far.

• MSI MAG A1250GL PCIE5 1250W ATX 3.1

I haven't heard a single good thing about this PSU, so idk about that.

 

[Sunny and 75]

I haven't heard a single good thing about this PSU, so idk about that.

This one's better.

• MSI MPG A1250GS PCIE5 1250W ATX 3.1

It even has that 10 year warranty badge so 3 years more than the older variant.

 

[Dr. Dro]

This one's better.

• MSI MPG A1250GS PCIE5 1250W ATX 3.1

It even has that 10 year warranty badge so 3 years more than the older variant.

I'm personally interested in the 1300W MEG, but it is quite expensive and better options seem to have appeared since. I'm gonna look at reviving my Z690 throughout this year, if I am successful, the plan is to eventually grab an RX 9060 XT, perhaps even a 9070 if I find one at a good price for it. The PSU I am using right now would go on that build. Problem is justifying the expense.

 

[Sunny and 75]

Problem is justifying the expense.

Absolutely.

Thank you for pointing that out earlier, the GS is what I intended to suggest, not the GL and I've edited my original post to reflect that.

I'm personally interested in the 1300W MEG

Yeah, that's the one to grab!

 

[Carsomyr]

It would take a while to recap and copy paste everything that Jonnyguru said about some of PSUs we've been discussing here and the issues we faced with them. At first, jonny thought that it might have something to do with the color of the cable (white). But then I discovered a YouTube unboxing video of the black version of the Super flower Leadex vii XG 1300w and the 600w cable was still only rated for 80c

I decided to return my Leadex vii to Newegg and I ordered the platinum 1200w model despite the reddit issues mentionned, if only to get a good look at what cables were used for that unit. I'll report back here what I find. If I'm disappointed in the slightest with that unit as well, despite its other strengths, I'll return it as well and bite the bullet and spend the extra $ to get the nzxt c1500 or corsair hx1500i (hx1200i is also fine, but I need the extra ports), msi meg or even the ben quiet 13 dark pro, or the seasonic prime px/Tx lineup.

I'll keep you guys posted. I've been chatting for hours about PSUs with jonnyguru and friends and my head is about to explode lol. I've been following him for more than 15 years. I couldn't believe my eyes when I saw him reply to my question. At first I thought, it's probably not him lol. As a 17 year pc enthusiast I still remember reading his reviews and posts way back when. The guys a machine.

Another psu I'd love to see a complete YouTube unboxing of is the super flower Leadex titanium atx 3.1

I just wish EVERY PSU reviews out there would include pictures of the ratings listed on the cables. Often times there's important info on there about the gauge of the wires, the temp ratings for the cable and sometimes info about the connectors themselves. There should ALWAYS be pictures of the inside of the connectors so you can see the pins inside them.

Its small details for sure. But when you're hooking up a 4000$ card to your system, believe you me, you ask questions and you're suddenly more demanding

Edit: somebody mentionned the msi meg 1300w earlier, that's one of the PSUs jonny seemed to approve 100%. It's Definetlly on the expensive side though, but yeah a good psu. I'd say get it especially if you're looking for that color scheme in your build. Otherwise there are better bang per buck alternatives that will give you the same quality

 

[Sunny and 75]

when you're hooking up a 4000$ card to your system, believe you me, you ask questions and you're suddenly more demanding

No two ways about that! Absolutely!

We need to see the phrase "you get what you pay for" in action.

 

[dark_globe]

i've been following him for more than 15 years. As a 17 year pc enthusiast I still remember reading his reviews and posts way back when. The guys a machine.

same , he inspired me to be looking more in depth into power supplies ,
the problem is the more you go down the rabbit hole of knowledge about the subject the more you worry
i was very sad after his website shut down .
these days aris and hw busters seem to be doing a great job .

i have been studying power supplies for almost 15 years and i still think i don´t know nearly enough


i would personally stick with seasonic or corsair when it comes to powering up rtx 5090 .
either HX 1200w (2025) or vertex GX/PX 1200w
both have the option to buy a 90°C certified 12V-2×6 cable

https://seasonic.com/12v-2x6-cable-90-degrees/

CORSAIR Type 5 PSU 90° 12V-2x6 Style B Cable

Connect your latest NVIDIA® GeForce RTX™ Series graphics cards safely and securely with the CORSAIR 12V-2x6 90 Degree Angled GPU Power Cable, with ultra-flexible embossed sleeving to make cable management easy.

www.corsair.com

(just in case the psu itself doesn´t already come with one - but i doubt these 2 brands would ship their flagship psus with the cable of lesser quality)
granted these units are expensive but you are paying $4 000 plus for the graphics card so throwing in another extra $100 or $200 should not be an issue .

the cheaper candidate would be the new MSI MPG A1250GS thingy

you can even get away with cheaper 1kW units like Corsair RM1000x ATX 3.1(2024) or the Seasonic Focus GX-1000 V4 ATX 3.1
but that would be more on the edge of course .

 

[Sol_Badguy]

Hm, interesting find, it got me curious. Unfortunately my Palit 5090 doesn't have the per-pin sense, I think only the Astral does. I'll have to wing it, but I haven't noticed anything wrong with the 1st gen Leadex and the CableMod E-series 3x 8-pin PSU-side to H+ cable I used since the 4080 thus far.

You could've have also used the 4-way octopus adapter no? You had it bundled in the GPU box, I think that's better than a 3-way cable. More clutter though.

I decided to return my Leadex vii to Newegg and I ordered the platinum 1200w model despite the reddit issues mentionned, if only to get a good look at what cables were used for that unit. I'll report back here what I find.

It's the bigger brother of this:

Super Flower Leadex VII PRO 1000W ATX v3.1 PSU Review - Page 2 of 11 - Hardware Busters

Hardware Busters - Super Flower Leadex VII PRO 1000W ATX v3.1 PSU Review - PSUs

hwbusters.com

The cables won't be identical to the ones on 1300 XG because for these they have 2x9 pin connectors on the PSU side.
But I'm willing to bet everything else is the same, and the 9 pin sockets will have 3 empty slots.

I just wish EVERY PSU reviews out there would include pictures of the ratings listed on the cables. Often times there's important info on there about the gauge of the wires, the temp ratings for the cable and sometimes info about the connectors themselves. There should ALWAYS be pictures of the inside of the connectors so you can see the pins inside them.

I wish PCI-SIG would enforce the pin receptacle type (for the 12V-2x6 plug) as well (leaf spring or GTFO), perhaps even the temp rating (105°C or GTFO), the wire gauge might be enforced to 16 AWG not sure about that.

About the 12+2 pin to 2x8 pin connection, Aris' opinion:

Corsair HX1200i ATX v3.1 (2025) PSU Review - Page 11 of 11 - Hardware Busters

Hardware Busters - Corsair HX1200i ATX v3.1 (2025) PSU Review - PSUs

hwbusters.com

Corsair aren't stupid, they've updated the HX1200i and HX1500i and branded them as 50 series ready in 2025 after having first hand experience with the 5090. And they've chosen 2x8 pin on the PSU and NOT a native 12V-2x6 like on the RM1000x which was released in 2024.
They know what they're doing.
Also the insertable part of the 12+2 connector is now of different color.

The Corsair cables however aren't naked from what I can see, so one has to get to the insulation to see what markings they have.

The plot thickens...

 

[Dr. Dro]

You could've have also used the 4-way octopus adapter no? You had it bundled in the GPU box, I think that's better than a 3-way cable. More clutter though.

I've considered it but it's too unwieldy, running 4 8-pin cables to the adapter with this open bench setup, I'm concerned the sheer weight of the cables could actually cause the connection to come loose. Not to mention it would look like it was jury rigged in here. Pitifully bad.

The cable doesn't get unusually hot, but I made sure that contact was perfect when I installed it.