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Corsair SF Series 750 W

crmaris

crmaris

Joined
Mar 3, 2011
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With 750 Watts, the Corsair SF750 is the strongest SFX power supply money can buy today. We saw great performance in almost all tests, and it operates quietly. Thanks to the included SFX-to-ATX adapter, you'll be able to pair it with a standard sized system, too.

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wow... 179.99$ msrp ... ok i can plan on 230chf/$ retail then ... damn that's quite expensive ...

but again that's a 750W SFX ... (although i suspect other brand would do it cheaper than Corsair ... maybe not 80+ Platinum but even Bronze would be good ... :laugh: )

nice review
 
With SFX PSU at this wattage Platinum is well worth it. There really is no room left in there and however little the improvement in waste heat, it is awesome. It does not help that these PSUs usually end up in extremely small and cramped cases.

92% vs 94% efficiency at 50% load does not sound much but looking at an example real-life scenario of 600W PSU putting out 300W the remaining 8% and 6% (that almost completely get converted to heat) are 24W and 18W in practice. I am not talking about cost of electricity, but the effort of cooling down additional 6W in that small a space with small fan does make a difference in noise and heat buildup. This is theoretical so numbers will vary a bit in practice but this is the gist of the best case scenario here.

There are very few competitors for high-power SFX PSUs. Silverstone is the main one and has been making SFX PSUs (cooler ones mostly in SFX-L form factor) for a while but their quality and QA seems to be spotty to put it lightly. I might be unlucky but I have only had bad experience with Silverstone SFX PSUs, one was DOA, one had a known issue with fan control, one was loud as hell.

Corsair is not the best either, they just happen to have the best products and lineup in the segment right now. For example, they have SF600 in both 80+ Gold an 80+ Platinum. You need to delve into the product code to see which one you are getting. The most practical difference is gold one having somewhat crappier fan control. I have an older SF600 feeding my PC right now.

This much power in SFX form factor, especially with this high quality is an amazing technical achievement. Pictures in reviews do not usually show how bloody small an SFX PSU really is. The best photo Google gave me right now was this - with beer for scale:
yuQ8BvY.jpg
 
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I have the SF600 Platinum and it's brilliant. I'm running a fairly beefy ITX system with a 2700X and 2080Ti, never had a single problem (nor would I have any reason to). An ITX build would struggle to overload even the 600W, so it's hard to actually imagine someone needing 750W for ITX purposes. When it comes to M-ATX/ATX though, I can see the advantages if you want to save some space in a smaller case.
 
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This is my PSU - I love it...

If you do get it and plan to use it with the adapter in a standard ATX, you will need to get the corsair custom cables or extenders, as the 24 pin and the 8 pin CPU will not reach out of the box:

123598
 
Yeah, that's a great one. Only way to best it is 80plus Titanium badge, come on CWT make it real.
 
Yes I say that they should make an ETA-A+ next, which is tougher than Ti
 
crmaris said:
Yes I say that they should make an ETA-A+ next, which is tougher than Ti
Click to expand...

Not that they are necessary ruling each other out. I don't think there's even single one 230V psu that can do ETA-A+ without being titanium efficiency. Heck if Titanum psu fails ETA-A+ tests it's usually because of "poor" power factor rather than any efficiency deficit. On 115V side of things I would personally take 80plus titanium ETA-A over the 80plus platinum ETA-A+, but then again I'm not living in the country where is such a voltage. So if I want ETA-A+ psu, only ones that I can buy are few 80plus titanium certified ones from Corsair or Seasonic.
 
I had an sf600 platinum in my Cerberus X with a 2700x + 1080 ti and unfortunately it was louder than my radiator fans at full load. The sf750 isn't any better in the noise department so when I switched to a 9900k+2080ti I had to go with a full ATX psu and had to move my watercooling loop outside the case.
 
Right Power Supply for Lian Li PC-O10 WX.
This PSU mean difference between mid range and high end PC.

I believe 750W with in worse scenario could work with 250W power consumption and Intel Skylake-X or AMD Threadripper 1/2 platform.
But I would feel far from comfortable.
 
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