Corsair SF1000 ATX 3.1 PCIe 5.0 Platinum Power Supply Review

A Closer Look – Interior

The Corsair SF series PSU all use a good quality 92mm fan for cooling, obviously that’s a fairly small fan, but keep in mind, these are very small power supplies, so 92mm is the upper limit of what will fit. That being said, because they’re designed to be so efficient, they’re not going to generate as much waste heat as an 80 Plus Gold or 80 Plus Bronze PSU would.

What’s really striking, however, is just how clean the interior of the PSU is. It’s one of the smartest looking layouts I’ve seen, especially given just how much hardware Corsair has crammed into such a small space.

There’s a very robust level of shielding around the AC line-in, and that’s true of a lot of the components too, likely needed given their close proximity.

The coils are neat and tidy, with two smaller ones on the side here for the DC-DC 5v and 3.3v conversion.

And some larger ones towards the rear as part of the PFC. There’s a black aluminium heatsink right down the middle, with multiple fins split into multiple sections keeping the MOSFETs cool.

Even the main transformer has a bit of Corsair branding and looks nicer than what we usually see, not that it needs to, but I like the attention to detail here. The main bulk capacitor is pretty chunky, and just like all the other capacitors in this PSU, they’re all Japanese made and rated for 105c operation.

Everything is pristine in here, even the back board for the connectors, and I’d say it’s pretty obvious it’s all machine soldered, as it’s all extremely clean and uniform throughout.