Corsair SF Platinum (2024)
The small-build pick. Two labs put it at the top of its class.
- Efficiency
- 80+ Platinum
- Modular
- Full
- Standard
- ATX 3
- Form factor
- SFX
- Outputs
- 750 / 850 / 1000W
The verdict
If you're building in a small SFX case, this is the one I'd buy. It packs 850W into an SFX unit, and Corsair includes a bracket so it also fits a normal ATX case if you move it later.
HWBusters ranked it first among 850W SFX units, and KitGuru gave it its top Must Have award. Both praise its build quality and Platinum-level efficiency.
The small 92mm fan is the compromise. It's quiet at light and moderate loads, but you'll hear it under heavy load.
Corsair SF Platinum (2024) reviews
Both lab tests rank it at the top of its class. HWBusters placed it first among 850W SFX units, and KitGuru gave it its top Must Have award. The only shared reservation is noise under heavy load, which comes from the small 92mm fan.
Both labs agree
- Top performance and high build quality. HWBustersKitGuru
- Platinum-level efficiency. HWBustersKitGuru
- ATX 3.1 and PCIe 5.1 ready, fully modular, 7-year warranty, SFX-to-ATX bracket included. HWBustersKitGuru
- Quiet at light and moderate loads, but audible under heavy load. HWBustersKitGuru
Also worth knowing
- Over-current trigger points on the minor rails are set too high. HWBusters
- Uses 105°C Japanese capacitors. KitGuru
The SF850’s overall performance easily gives it first place in the 850W ATX v3.1 SFX PSU category.SF850, ATX 3.1KitGuruAugust 2024
The SF850 Platinum is another fantastic power supply from Corsair – just as good at its bigger brother.SF850 Platinum (2024), 9/10, Must Have
Reviews tested the 850W model.
Pick your output
- 750WMid-range builds, up to an RTX 5070 Ti class card.Check 750W price
- 850WHigh-end builds, up to an RTX 5080 class card.Check 850W price
- 1000WThe most power-hungry cards, RTX 5090 class.Check 1000W price
Sizes assume a typical processor. Check your build in the wattage guide.
Other Tier A at 850W
- undefined80+ PlatinumCheck price
- Cooler Master V-Series Vanguard Gold SFX ATX 3.180+ GoldCheck price
- SilverStone Extreme (SFX & SFX-L) R Platinum SFX-L80+ PlatinumCheck price
Specs
| Tier on my list | A · High-end builds |
|---|---|
| Wattages | 750W, 850W, 1000W |
| Efficiency | 80 Plus Platinum |
| Modular | Fully modular |
| Standard | ATX 3 |
| Size | SFX |
| Released | 2024 |
Corsair SF Platinum (2024) questions
Will the Corsair SF Platinum (2024) fit a normal ATX case?
Yes. It's an SFX unit, and both reviews confirm an SFX-to-ATX bracket comes in the box.
Is the SF Platinum (2024) loud?
It's quiet at light and moderate loads. Under heavy load the small 92mm fan is audible: KitGuru measured 37.4 dBA at the full 850W.
How efficient is the SF Platinum (2024)?
Platinum level. KitGuru measured a peak just over 94% at around half load.
What warranty does the SF Platinum (2024) have?
Seven years, according to both reviews.
Which Corsair SF Platinum (2024) wattage should I get?
It comes in 750W, 850W, 1000W. Match it to your graphics card using the output guide above, or the calculator for your exact parts.
Can I reuse cables from my old power supply with the SF Platinum?
Use the cables that came in the box. Modular cables aren't standard between brands, or even between generations from one brand, and the wrong cable can damage your parts.