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The Corsair SF750 SFX Platinum power supply is another tour de force showcase from Corsair. They are incredibly strong right now in the small form factor sector and the high output SF750 reinforces their growing status.
Technically there is little, if anything we can fault. Load Regulation is first class, and the unit meets Platinum efficiency levels without a hiccup. The unit design produces tight control over AC ripple mV and we recorded stellar results, even under full load conditions.
We are happy to see Corsair have adopted all Japanese capacitors in both primary and secondary stages to offer long term reliability and stable operation under heavy load conditions. The primary bulk capacitor is by Japanese manufacturer Nippon Chemi Con and is rated 105c.
SFX power supplies always have to make sacrifices in regards to fan noise, and thankfully Corsair have taken some clever steps forward to alleviate this potential headache. They have adopted a larger 90mm rifle (normally 80mm) bearing fan inside this supply, and thanks to Corsair's Zero RPM system, it does not spin at all under lower or even normal load situations.
It is likely if you have this supply in your system and you are doing general work it won't make a noise at all. Under higher load situations, the fan will spin, but until you are close to 80% load, it won't really make its presence known. At full load, the fan is quite noisy but we would expect this – after all it is still only 90mm in diameter.
We tested this power supply and it was not only able to deliver a continuous 750W, but it almost delivered 790W before it shut off safely. This is very reassuring to see and we recorded a long run at 770W load without any problems or potential shut down issues occurring.
I deliberately tried to exacerbate potential coil whine issues, by running this power supply in a system with a RTX 2080 and by pushing some games at very low resolutions and extremely high frame rates over long time periods, but i am happy to report that no coil whine was noticeable, with our review sample anyway.
The Corsair SF750 SFX is without doubt one of the finest SFX power supplies that any company has ever made, however be prepared to pay quite a lot of money to own one as they are currently available from Overclockers UK for a wallet sapping £142.99 inc vat HERE. SFX is a niche market hence the high asking price, but if you simply must have the best power supply in this sector, then the Corsair SF750 deserves some serious attention.
Pros:
- Able to deliver almost 790 Watts under load.
- Very quiet under normal circumstances.
- Ripple suppression is first class.
- No coil whine.
- 7 year warranty
- 105c rated capacitors throughout
- high levels of efficiency, achieving Platinum rated levels.
Cons:
- Cables are intentionally quite short, might not be ideal inside a larger case.
- expensive, due to the nature of this market.
KitGuru says: If you are building a high end gaming system inside the SFX platform then this should be right at the top of your list.
