Corsair RM750x 750W Power Supply

PRODUCT: RM750x 750W
PROD LINK: Corsair’s current offerings
PRICE: $129.99 @ NewEgg
Price is at the time of testing!

Our first look at the unit shows us much the same view as the 1kW, with a different model number on the side. That’s to be expected. We’ve still got the same warning sticker over the AC receptacle, telling us the unit does run fanless at times, and you shouldn’t panic if it’s not spinning.

Again, similar graphics to the 1kW. No surprises thus far.

You’re going to find this shocking, but here goes… the exhaust grille of this unit is the same as big brother’s. Lots of wide open space for getting rid of all that heat inside the unit. I do still think Corsair would do well to have the factory use a darker color caulk in there, so it’s not as visible.

Need another shot of a side panel? Here you go. The AC receptacle, as usual, protrudes a little bit, but the modular cable connectors don’t do so quite so much. They’re nearly flush with the housing. Nearly.

Speaking of the modular connectors, here they are now. Basically the same deal we had with the 1kW unit, only with fewer total connectors.

The fan grille is the same wire grille used in the larger unit, as well. This should help keep the fan from being too loud when it does come on. So far, the competition over at EVGA hasn’t caught on with that in their high-end units. They do offer some wire grilled units, but not on the high-end side of things, where they’re exclusively stamped steel.

It wouldn’t be a power supply review without a load table. This unit is rated for full beans at fifty degrees, so that’s what I’ll be aiming for.

RM750x 750W – DC Output
DC Output +3.3V +5V +12V -12V +5VSB
25A 25A 62.5A 0.8A 3A
Max Power @ 50°C 150W 750W 9.6W 15W

The cabling on this unit is… once again, a lot like big brother’s with fewer in total. Only the peripheral cables are ribbon style, due to the capacitors included in the rest of them.

One CPU cable comes with this unit, and that’s fine by me. At 750W, I don’t mind not having two of them. It and the ATX cable are exactly the same ones that came with the RM1000x.

Four PCI-e connectors on two cables are all you get with this unit. That should do the job for most people. It’s not the best option for dual PSU crypto mining rigs, but really… for that, you really should go with something that can run with the fan on all the time.

Two Molex chains come with the unit, totaling eight connectors. Why? Who needs that many Molexes in 2015? I don’t get it. At least, make one a combo SATA/Molex job.

But, like the 1kW unit, there are still enough SATA connectors to get the job done.

RM750x 750W – Cabling
Type of Cable Length from PSU
Modular Cables
20+4 pin ATX connector 600 mm
4+4 pin CPU 650 mm
6+2 pin PCI-e, 6+2 pin PCI-e 600+150 mm
6+2 pin PCI-e, 6+2 pin PCI-e 600+150 mm
SATA+SATA+SATA 520+120+120 mm
SATA+SATA+SATA 520+120+120 mm
SATA+SATA+SATA 520+120+120 mm
5.25″+5.25″+5.25″+5.25 450+100+100+100 mm
5.25″+5.25″+5.25″+5.25 450+100+100+100 mm
5.25″ to 3.5″ Adapter 100 mm
Unit Dimensions (L x W x H)
180 mm x 150 mm x 86 mm

Lengths look much the same as the bigger unit, too, right up to and including the housing for the unit itself. No complaints from me. 180mm is a bit long for a unit at this power level, so you may want to do some measuring of your case.