Seasonic Focus SPX Series 750 W SFX PSU

[crmaris]

The Seasonic Focus SPX-750 offers good overall performance, but is struggling to compete with the Corsair SF750 Platinum in most areas. Its fan-speed profile and over-temperature protection also require further tuning.

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[juular]

This is art. Seasonic's fan control practices in one picture.

 

[dirtyferret]

Unfortunately, I cannot recommend this product because of the OTP problems I came across.

A non-recommendations for a Seasonic PSU and stating the corsair alternative is better!? I'd be careful about posting this review on Tom's otherwise those Seasonic fanboys will be getting rather angry.

 

[crmaris]

Don't shoot the messenger

 

[mouacyk]

Shame, their ATX-factor PSU's are rather good. Wth is wrong with SFX fan noise? There are complaints across the board. I get that it's a smaller fan, but if the noise issue cannot be solved, SFX PSU's might as well not exist. Will be replacing my SX700-PT with a noctua 92mm fan this weekend to see if noise improves, when load cross 50% barrier.

 

[Selaya]

View attachment 239464

This is art. Seasonic's fan control practices in one picture.

ikr
wtf is this fan curve i don't even-

 

[Turmania]

Brilliant and very in-depth review thank you for the dedication, as it must have been a lot of work... my conclusion is it is better to buy corsairs version.

 

[ShurikN]

Shame, their ATX-factor PSU's are rather good.

Their SFX-L line is also quite good

 

[mouacyk]

View attachment 239464

This is art. Seasonic's fan control practices in one picture.

To be fair, it's mostly like that across the board of SFX PSU's. They all ramp up at 50%, as if freaking out.

 

[kiriakost]

I will never use any SFX PSU and therefore I do not care.
Long Live ATX !!

 

[ShurikN]

I will never use any SFX PSU and therefore I do not care.
Long Live ATX !!

So why are you in this topic then?

 

[kiriakost]

So why are you in this topic then?

Is this a News Room or not?
Many people write pointless messages according my taste, I never ask them of why they do it.

 

[tabascosauz]

What's up with Seasonic and their heat problems in SFX/SFX-L? Been waiting for this one since Seasonic promised years ago that they'd have an answer to the SF750 after their SGX line fell short.

I have an SGX-650 and it has a hard time matching even my ancient SF600 Gold when it comes to heat output and fan noise, despite being bigger. It runs hot and derates to a 550W unit at 50C. Good thing I earlier made the decision to move to the SF750 Plat then, since Seasonic clearly still isn't ready after all these years.

 

[chrcoluk]

Ahh so reviews do exist without an award.

 

[mouacyk]

Cooler master v1100 can't come soon enough (cough vaporware cough)

 

[danbert2000]

May I say that we all applaud your commitment to killing PSUs in the name of validating their protection measures. Very informative review. I am surprised that a high end brand like Seasonic would put out such a middling release. The fact that these 750 W PSUs are not a walk in the park must be worrying for Nvidia with their rumored 450 W and beyond GPUs in the 4000 series. I think that maybe SFF is running into a bit of a power wall until more power supply makers figure out how to put out reliable and safe high density PSUs.

 

[R-T-B]

May I say that we all applaud your commitment to killing PSUs in the name of validating their protection measures. Very informative review. I am surprised that a high end brand like Seasonic would put out such a middling release.

The last fanless psu of theirs TPU reviewed wasn't that great either, tbh.

Worrying trend.

 

[crmaris]

I am trying to find now some of the new B12 and G12 units to review and check how they perform. If I cannot get any samples, I will buy them.

 

[kiriakost]

Seasonic told me that they are very busy this period of time, so busy that especially the headquarters does not answer back any emails.

 

[thegnome]

Hopefully this is just a temporary dip in PSU quality, will hopefully get back to what they are known for soon.

 

[Assimilator]

The last fanless psu of theirs TPU reviewed wasn't that great either, tbh.

Worrying trend.

Was just about to post this. One bad product you can chalk up to a once-off, two and you've got a downward slope starting.

@crmaris could you maybe ask some of your contacts in the industry to dig up some info on WTF is going on at Seasonic? Did the management change, or did they lose a top engineer(s), or what?

 

[crmaris]

Was just about to post this. One bad product you can chalk up to a once-off, two and you've got a downward slope starting.

@crmaris could you maybe ask some of your contacts in the industry to dig up some info on WTF is going on at Seasonic? Did the management change, or did they lose a top engineer(s), or what?

When you don't send samples to reviewers (or me at least, in particular) and don't have any feedback, it is difficult, if impossible, to keep performance, reliability, and the other essential factors at good levels. You ALWAYS need someone else, an external, to take a look at your products, to be sure that you didn't miss something. Just take a look at how many Seasonic reviews I did the last years at TPU.

 

[kiriakost]

You ALWAYS need someone else, an external, to take a look at your products, to be sure that you didn't miss something.

This is a very sweet thought, but they can test everything also by them self's.
The Asians they use Bloggers only as tool for promotion advertising.
PSU testing Blogs this is now a flooded sector.
All Brand's profitability has shrink, they are afraid, they had stop spending about marketing.
Technology Blog's they should count of their own wallet for the next three years at least.

 

[mouacyk]

On the upside, maybe the cm v1100 is coming very soon. That's why seasonic is pushing a 750w unit now.

 

[juular]

On the upside, maybe the cm v1100 is coming very soon. That's why seasonic is pushing a 750w unit now.

On the downside, don't expect it to be quiet either, it's physics, smaller size, higher wattage - higher power density and the need to somehow dissipate the heat. 750W is a piece of cake at this point, 1kW is doable (Corsair SF1000 in SFX-L is coming, even if not as quiet as SF750). But 1100kW true SFX ? No way it's going to be quiet, but we'll see, maybe Cooler Master have invented a black hole.