Researched, not hands-on tested.How we review ›
all judged against power supplies at a similar priceThe be quiet! Pure Power 12 M 850W scores 7.7/10 overall, ahead of the Corsair SF750 SFX Fully Modular 80 PLUS Platinum at 7.4/10.
The be quiet! Pure Power 12 M 850W leads on cabling and connectors and warranty.
The Corsair SF750 SFX Fully Modular 80 PLUS Platinum leads on efficiency.
They score the same on quality and protections and noise.
The biggest difference is warranty, where the be quiet! Pure Power 12 M 850W scores 10/10 to the Corsair SF750 SFX Fully Modular 80 PLUS Platinum's 7/10.
This is an 850 W fully modular ATX 3.0 power supply for builders who want a quiet PC with a modern GPU connector. It suits gaming and general-purpose desktops that will rarely sit near full load. It is a weaker fit for anyone who wants a fan that stops entirely at idle.
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The Corsair SF750 is a 750 W SFX power supply for small-form-factor builds that need a modern GPU cable. It suits buyers who want Platinum efficiency, quiet running and ATX 3.1 support in a compact case. It fits a single-GPU system better than a build that needs many PCIe 8-pin connectors.
Typically about £137.97 in the UK when we researched itSearch Amazon UK (opens in a new tab, affiliate link)Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details
| Criterion | Weight | be quiet! Pure Power 12 M 850W | Corsair SF750 SFX Fully Modular 80 PLUS Platinum |
|---|---|---|---|
| Quality and protections | 30% | 7/10 | 7/10 |
| Efficiency | 20% | 7/10 | 9/10 |
| Cabling and connectors | 20% | 8/10 | 7/10 |
| Noise | 15% | 7/10 | 7/10 |
| Warranty | 15% | 10/10 | 7/10 |
| Overall | 7.7/10 | 7.4/10 |
| Spec | be quiet! Pure Power 12 M 850W | Corsair SF750 SFX Fully Modular 80 PLUS Platinum |
|---|---|---|
| Rated output (W) | 850 W continuous, 900 W peak; 850 W combined 12V output, 600 W combined 12VHPWR | 750 W continuous; +12V rated 62.5 A / 750 W |
| Efficiency rating (80 Plus or Cybenetics) | 80 PLUS Gold; up to 93.2% (manufacturer); Cybenetics [115V] Platinum rating, 89–91% | 80 PLUS Platinum; Cybenetics Efficiency Platinum; Cybenetics Noise A- |
| Form factor (ATX or SFX) and ATX 3.x / PCIe 5.x support | ATX 3.0; PCIe 5.1 compatible | SFX, 100x125x63.5 mm |
| Modular cabling (fully, semi or non-modular) | Fully modular | Fully modular, Type-5 Micro-Fit connectors |
| Graphics card connectors (12V-2x6 / 12VHPWR and PCIe 8-pin count) | One 12VHPWR (600 W); four PCIe 6+2-pin; one P8 and one P4+4 CPU; six SATA; two PATA | 1x 12VHPWR (12+4-pin) 400 mm; 2x PCIe 8-pin (6+2) 400 mm; 8 SATA, 3 PATA, 2 EPS |
| Fan size and zero-fan mode | One 120 mm rifle bearing fan, max 2000 rpm; no zero-fan mode | 92 mm PWM, fluid dynamic bearing, Zero RPM mode |
| Warranty (years) | 10 years | 7 years |
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