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Corsair RM750 750 W

crmaris

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The Corsair RM750 only costs slightly less than the RM750x, and the latter comes with the topnotch NR135L fan and Japanese caps. That said, the RM750 has jaw-dropping efficiency at very light and light loads and is compatible with the new Modern Standby mode in Windows 10, meaning it can wake up the system within five seconds.

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Instead of "Small price difference to the RM750x (2018)" I'd say "Only $10 cheaper than the RM750x (2018)".

Personally this is a better product for me than the RMx, since it lacks the godawful and mostly useless in-cable caps.
 
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Pretty brave to give 10 year warranty to something that have Su'scon's and Elite caps on secondary. Other than that it's a solid PSU, just a bit worried about it's longevity.

Great review as always @crmaris :toast: Do you have any samples of Seasonic? made Phanteks AMPs or that FSP made EVGA Supernova G5?
 
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this is a better product for me than the RMx, since it lacks the godawful and mostly useless in-cable caps.
Oh my god, Yikes :(

I would like to see fractal design ion+ platinum review they are cheap and seems great.
Buddy, they are more than great, the ion+ platinum is an extremely proficient power supply that is over speced with great internals and priced as most popular gold rated power supplies. Kit guru said it's one of the best price\ performance power supply of 2019 and i would like to add that, to me at least it renders the Focus gold plus obsolete cause you get better efficiency and build quality for the same price

It's a shame they replaced their awesome NR135L fan with a Hong Hua one :(... Hong hua fans are arguably less desirable as they are more prone to issues
 
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One thing i'v seen become common in today PSUs is that the fan semi passive mode is based on load such as 40% or above where as in past years it was based on temperatures such as when the PSU gets to 50c the fan starts to kick in. My question is if this RM750w PSU temps for some reason gets to 50c or above below 40% load due to hot climates or bad case airflow, would the fan also spin ?

I'v been wondering about this for a while now and i would appreciate someone painting a clear picture
 
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Pretty brave to give 10 year warranty to something that have Su'scon's and Elite caps on secondary. Other than that it's a solid PSU, just a bit worried about it's longevity.
In a good PSU design they can last quite some time, 10 years shouldn't be a problem in this case. If Corsair used really crappy capacitors you still should worry, but in this case they didn't.

I would like to see fractal design ion+ platinum review they are cheap and seems great.
These reviews are from Aris. And yes it's a good PSU as you can read in the review.


Buddy, they are more than great, the ion+ platinum is an extremely proficient power supply that is over speced with great internals and priced as most popular gold rated power supplies. Kit guru said it's one of the best price\ performance power supply of 2019 and i would like to add that, to me at least it renders the Focus gold plus obsolete cause you get better efficiency and build quality for the same price
Aris doesn't write the reviews for KitGuru anymore. Now the reviews aren't that interesting anymore. The current reviewer doesn't test much and his knowledge about power supplies isn't that great. Seasonic Focus was already obsolete because the of the problems it had. Fractal Design ION+ didn't make it obsolete.

It's a shame they replaced their awesome NR135L fan with a Hong Hua one :(... Hong hua fans are arguably less desirable as they are more prone to issues
Agreed, RM with a NR135L would be much more likeable.
One thing i'v seen become common in today PSUs is that the fan semi passive mode is based on load such as 40% or above where as in past years it was based on temperatures such as when the PSU gets to 50c the fan starts to kick in. My question is if this RM750w PSU temps for some reason gets to 50c or above below 40% load due to hot climates or bad case airflow, would the fan also spin ?

I'v been wondering about this for a while now and i would appreciate someone painting a clear picture
Corsair uses a microcontroller in their better power supplies for fan control. The microcontroller looks at the temperature but also at the load. So it isn't 40%, that's just there to keep it simple for the average consumer. Many other brands only look at temperature by the way, same goes for Corsair in their cheaper power supplies. In that case just a simple thermistor is used.
 
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Aris doesn't write the reviews for KitGuru anymore
The thing about Aris is that i find his reviews to be overly critical over the little details, he lists little things that aint going to affect the end user at all as cons many times. I'v seen many recent PSU releases score well in pretty much every other website but in Tomhs hardware Aries reviews. I just stopped reading his reviews and went to Johnny guru, kitguru reviews in addition to anandtech and etenix for a more practical overall picture of what to expect from a PSU. Go read the fractal deings ION+ review of any website online and you'll see them singing praise for it, now come back to Aris one only to see a score of 3.5\5 dragged down by cons i have never heard from in the other reviews. I don't know man... Maybe its hist test bench, meth hoods, or something els that makes his results different from the rest.

Seasonic Focus was already obsolete because the of the problems it had
I find it interesting you keep saying that cause the Focus gold currently sits at a 5 eggs user reviews average on newegg across its entire range of products, which at first glace seems everyone is happy with their unit... Now while i strongly believe their are better options i wouldn't say its bad by all mean its just the other alternatives offer you more for the same price, such as a better quality fan than Hong Hua which is enough for me to buy anything other than a seasonic with a Hong Hua fan :D
 
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The thing about Aris is that i find his reviews to be overly critical over the little details, he lists little things that aint going to affect the end user at all as cons many times. I'v seen many recent PSU releases score well in pretty much every other website but in Tomhs hardware Aries reviews. I just stopped reading his reviews and went to Johnny guru, kitguru reviews in addition to anandtech and etenix for a more practical overall picture of what to expect from a PSU. Go read the fractal deings ION+ review of any website online and you'll see them singing praise for it, now come back to Aris one only to see a score of 3.5\5 dragged down by cons i have never heard from in the other reviews. I don't know man... Maybe its hist test bench, meth hoods, or something els that makes his results different from the rest.
Aris his reviews are so much better than the ones, the difference is so big that others aren't that useful anymore. However if you only look at the up and downsides and the score the PSU gets then you miss everything important. I read the whole review, read reviews of similar power supplies and came with the conclusion that the Fractal Design ION+ is a great power supply and a good choice for many people.

eTeknix is plain bad by the way, it's full of things that aren't true, the measurements he does also always have the same mistakes for many years now. For example just look at the 20% and 100% load, those numbers are always the same. Just a simple example of the many mistakes in those reviews.
I find it interesting you keep saying that cause the Focus gold currently sits at a 5 eggs user reviews average on newegg across its entire range of products, which at first glace seems everyone is happy with their unit... Now while i strongly believe their are better options i wouldn't say its bad by all mean its just the other alternatives offer you more for the same price, such as a better quality fan than Hong Hua which is enough for me to buy anything other than a seasonic with a Hong Hua fan :D
I find it interesting that you believe that Newegg reviews are useful. I've seen crap products with many 5 star reviews and great products with many 1 star reviews. But if you read them you will see that 99% of them is just bs or totally useless. ;)
 
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I think Fractal is using one of their 140mm fans in their PSU not cheap ones.their cables seems really good as well plus a 150mm housing.ticks a lot of boxes for loads of cases.
 
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I find it interesting that you believe that Newegg reviews are useful. I've seen crap products with many 5 star reviews and great products with many 1 star reviews. But if you read them you will see that 99% of them is just bs or totally useless. ;)
Like the people who buy an X570 boards with display outputs and pair it with a Ryzen 3000, then post a 1-star review complaining the board is faulty because it doesn't output a display signal. I wish I could stab those people over the internet.
 
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I think Fractal is using one of their 140mm fans in their PSU not cheap ones.their cables seems really good as well plus a 150mm housing.ticks a lot of boxes for loads of cases.
Totally. Unless am really looking for an 80plus Titanium PSU, the ION+ is the power supply for me to buy
 

crmaris

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The thing about Aris is that I find his reviews to be overly critical over the little details.

It depends on what you perceive as a small detail. The truth is usually hidden in those details which might look small to you, but according to my expert opinion, they aren't.

Very critical is also to know what you are doing, when you conduct a PSU review and have calibrated equipment. Especially the latter can lead to highly inaccurate results. Also the more tests you conduct the more things you can find about a product. Some chose to only conduct a small number of tests, which is the easiest way. I chose to do as many as possible to have a complete picture of the product and provide accurate information to my readers.

About the Fractal Design PSUs, yes they are good and this is why they received a 3.5/5 in Tom's which is a high rating for my standards. I cannot overlook though the high OCP on all rails which can lead to serious problems, the very low efficiency with 2% load and with light loads in general, the not efficient 5VSB rail, the high inrush with 230V etc.

If all the above seem like small details to you, then clearly you need to study more on PSUs.
 
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I cannot overlook though the high OCP on all rails which can lead to serious problems, the very low efficiency with 2% load and with light loads in general, the not efficient 5VSB rail, the high inrush with 230V etc.

If all the above seem like small details to you, then clearly you need to study more on PSUs.
All am saying is its a little doubtful to me seeing his review the only one of the bunch that had these issues and its not the first time i'v seen that happen.
 
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Unbelievable that a 129usd PSU has such low-tier capacitors.
 

crmaris

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All am saying is its a little doubtful to me seeing his review the only one of the bunch that had these issues and its not the first time i'v seen that happen.
This is because he tests much more stuff than the others so it is more likely to find issues :)

It is crazy if you ask me, I don't find (many) issues some people complain, I find issues, some people again complain :D

For the member that asked above: Phanteks AMPs or that FSP made EVGA Supernova G5
I am already working on the G5s and I will probably do the AMPs as well.
 
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It's a shame they replaced their awesome NR135L fan with a Hong Hua one :(... Hong hua fans are arguably less desirable as they are more prone to issues
HongHua makes the NR135L fan. While this fan isn't as good as our primarily used PSU fan, it's still a pretty decent blade design with the same bearing as an NR135L.

Corsair uses a microcontroller in their better power supplies for fan control. The microcontroller looks at the temperature but also at the load. So it isn't 40%, that's just there to keep it simple for the average consumer. Many other brands only look at temperature by the way, same goes for Corsair in their cheaper power supplies. In that case just a simple thermistor is used.

Well said. Another reason is to avoid hysterisis and reduce impulse noise. A fan changing from 0 to 1200RPM quickly is more noticable than a fan that gradually runs from 0 to 1400. The latter is objectively louder but it doesn't grab your attention. If we linked fan speed to purely temp you would have the fan speeds change erratically and quickly since the thermistors aren't looking at ambient but rather temps of critical components running at 60-100C.

Re the capacitors: Sus'con are a little lower end but the Elite caps used here are pretty solid. We've seen more problems with Teapo than Elite over the last 12 months, so err towards using the Elite ones. Jon and I are pretty confident in the 10 year warranty I tasked his team with developing towards.
 
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