Cooler Master eXtreme Power 430W Power Supply

At just under $40, the Cooler Master eXtreme Power 430W RS-430-PMSR was a good deal. But with only 19A on a single 12V rail, not really suitable for a modern PC.

So what if Cooler Master were to convince HiPro to make a new version of the eXtreme Power 430W with dual 12V rails and, while they’re at it, move to a 120MM fan.

REVIEW INFORMATION
SUPPLIED BY: Cooler Master
MANUFACTURER: Cooler Master
PRODUCT: eXtreme Power 430W
PROD LINK: Cooler Master’s Current Offerings
PRICE: < $40.00
Price is at the time of testing!

That would describe the RS-430-PCAR. The newest incarnation of the eXtreme Power 430W. Typically found for about $10 more than it’s older brother, we’re about to find out how hot of a deal this is for a $50 power supply.

Cooler Master eXtreme Power 430W
The lack of grill makes for a very unique look.

That would describe the RS-430-PCAR. The newest incarnation of the eXtreme Power 430W. Typically found for about $10 more than it’s older brother, we’re about to find out how hot of a deal this is for a $50 power supply.

The first thing we notice with the new 430W is the aesthetic improvement over the old model’s gray housing by going with black. The overall look is still very toned down, likely in an effort to keep cost down. There is only sleeving on the main ATX cable and there isn’t even a fan grill. There are simply holes punched into the PSU housing to accommodate the 120MM fan.

Cooler Master eXtreme Power 430W
As with most (all?) Cooler Master power supplies, only the ATX cable is sleeved.

eXtreme Power 430W – Cabling
Type of Cable
Fixed Cables
ATX connector 20+4
2 x 2 12V connectors 1
5.25″ Drive connectors 6
3.5″ Drive connectors 1
SATA Drive power connectors 2

We don’t really gain any connectors in this revision. There’s still six Molex, two SATA and one floppy. Pretty basic.

Cooler Master eXtreme Power 430W
Way more information on this label than the eXtreme Power 600W label.

eXtreme Power 430W – DC Output
DC Output +3.3V +5V +12V1 +12V2 -12V +5VSB
30A 28A 14A 15A 0.8A 2.0A
Max Power 140W 348W 9.6W 10W
430W

Looking at the label, we some pretty complete specs… unlike the eXtreme Power 600W. We know what the total combined wattage for the 3.3V and 5V is, and what the total combined wattage is for the 12V rails. Breaking this down, we see we actually have a total of 29A we can put on the combined 12’s. Not bad for a $50 430W, IF it can actually do what it claims.

For those not familiar with my load tester, my SunMoon SM-268 allows me to pre-program different loads for all of the rails of an ATX power supply. It then reports back the voltage and wattage for each rail. It also tells me the total DC output of the power supply, and I have another device that tells me the total AC input from the wall. DC divided by AC is your efficiency. The device on the AC input also tells me my power factor.

eXtreme Power 430W – Load Tests
Test # +3.3V +5V +12V1 +12V2 Watts Efficiency P.F.
Progressive Load Tests
1 2A 4A 6A 6A 186W 80% 0.68
3.36V 5.13V 11.90V 11.88V
2 4A 4A 8A 8A 239W 79% 0.71
3.35V 5.14V 11.84V 11.82V
3 8A 8A 8A 8A 274W 78% 0.72
3.34V 5.09V 11.94V 11.92V
4 10A 12A 12A 12A 395W 77% 0.72
3.32V 5.06V 11.92V 11.89V
5 10A 12A 14A 14A 442W 76% 0.72
3.31V 5.07V 11.86V 11.83V
Crossload Tests
CL1 20A 20A 8A 0A 278.7W 75% 0.71
3.30V 4.90V 12.36V 12.41V
CL2 4A 4A 16A 16A 420.5W 74% 0.72
3.33V 5.19V 11.58V 11.53V

The load tester does not lie!! This power supply is solid all of the way up to 430W and then some. I was most impressed with the efficiency. It even passed the crossload tests, which were performed with the rails above label spec! Not bad at all!

If aesthetics aren’t high on your priority list, you don’t need a lot of connectors and you don’t need active PFC, this PSU is perfect for any non-SLI user on a budget. This PSU is efficient, quiet and fairly stable.

Cooler Master eXtreme Power 430W
An ADDA 120MM fan.

Cooler Master eXtreme Power 430W

Cooler Master eXtreme Power 430W

Cooler Master eXtreme Power 430W
The way the housing comes off of this model, you can actually see the entire circuit board once opened.

El Bueno:

  • El cheapo grande
  • Eficiente, no caliente

El Mano:

  • Extremo feo
  • ¿Conectador de PCI-e?

El Mediocre (un enchilada sin amargo-crema)

  • ¿PFC activo?