Corsair RM1000x 1000W Power Supply

REVIEW INFORMATION
SUPPLIED BY: Corsair
MANUFACTURER: Corsair
PRODUCT: RM1000x 1000W
PROD LINK: RM1000x Product Page
PRICE: $169.99 @ NewEgg
Price is at the time of testing!

Both SM-268 load testers will be in action today because this unit is slightly too big for just one. Helping out will be the rest of the usual gear I’ve listed about a thousand times before and see no need to type out yet again. I’m not rich, so the test gear has not changed lately.

Let’s do the standby tests.

RM1000x 1000W – STANDBY Load Tests
Test # +5VSB DC Watts/
AC Watts
Eff. P.F.
Load Tests
1 0.5A 2.51W/
3.07W
81.8% 0.235
5.02V
2 1.5A 7.50W/
9.31W
80.6% 0.407
5.00V
3 3.0A 14.9W/
18.7W
79.7% 0.484
4.97V

And we’re off to a great start. Efficiency is well above average on all three tests, with two of those tests seeing over 80%. I’d still like to see some improvements from here, but standby power efficiency is harder to master than when the main power is online so I’m in no hurry to start scoring on these tests unless there’s a failure. Or… 80 Plus starts to require high standby efficiency, too. I do score the 80 Plus targets in all applicable tests (even though I don’t score voltage regulation until the hot tests), because that’s what companies use for marketing their efficiency.

Voltage regulation stands at an excellent 1% on the nose.

RM1000x 1000W – Cold Load Tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive Load Tests
1 1A 1A 7.2A 99.7W/
115.7W
118.3V 86.2% 0.976 26°C/
27°C*
3.30V 5.02V 12.01V
2 2A 2A 15A 203.7W/
225.5W
119.3V 90.3% 0.992 28°C/
28°C*
3.30V 5.01V 11.98V
3 5A 5A 37.5A 499.1W/
547.7W
119.4V 91.1% 0.997 30°C/
30°C*
3.29V 5.00V 11.94V
4 8A 8A 56A 746.0W/
829.8W
119.0V 89.9% 0.997 28°C/
45°C
3.27V 4.99V 11.92V
5 10A 10A 75A 992W/
1124W
117.9V 88.3% 0.998 27°C/
51°C
3.27V 4.99V 11.89V
Crossload Tests
CL1 18A 18A 0A 154.4W/
187.1W
119.4V 82.5% 0.989 28°C/
39°C
3.29V 5.01V 11.97V
CL2 0A 0A 83.3A 996W/
1124W
117.7V 88.6% 0.998 28°C/
50°C
3.28V 4.99V 11.90V

* Fanless operation.

Moving on to the cold tests, we find that the power conversion efficiency is indeed meeting 80 Plus Gold targets, and… no, wait. They’re not meeting Gold. They’re just barely clearing Platinum. Folks, we have a platypus! Test two easily hits the Platinum 20% load mark with tests three and five both requiring help from my 1% scoring allowance for error to get the pass. But it does pass, and that’s awesome.

I like it whenever this happens. Promise one efficiency certification, but clear the next one up. That almost happened last week, too, when that Andyson beast came within a gnat’s eyelash of managing Titanium.

Over on the voltage readings, this RMX unit is proving to be no slouch there, either. I see 0.9%, 0.6%, and 1% in the above chart. That’s an average of 0.83%, which is above the excellent line for me. Yes, other units have done better than that, but by the time you start going above 1%, it just does not matter when it comes to stability.

When it comes to fannage, the unit only ran fanless in tests one to three. The rest of the time, the fan was running. No, I couldn’t hear it.