Reviews - Cooler Master eXtreme Power 430W
Sample Provided by: Cooler Master (By Tazz on Sat, May-19-2012)

Page 1 - The Cooler Master eXtreme Power 430W PSU

The lack of grill makes for a very unique look.

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.

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.

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

Type of connector: Cooler Master
eXtreme Power 430W
ATX connector 20+4
2 x 2 12V connectors 1
2 x 3 PCIe 0
8-pin Xeon/EPS connector 0
6-pin Xeon/AUX connector 0
5.25" Drive connectors 6
3.5" Drive connectors 1
SATA Drive power connectors 2
Fan only connectors (thermostatically controlled 12V only) 0

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

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

Cooler Master
eXtreme Power 430W
+3.3V +5V +12V1 +12V2 -12V +5VSB
30A 28A 14A 15A 0.8A 2.0A
Max Combined Watts 140W 348W 9.6W 10W

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.

Results from eXtreme Power 430W load tests
Test # +3.3V +5V +12V1 +12V2 Watts Efficiency P.F.
Simulated system load tests
2A 4A 6A 6A 186W 80% .68
3.36V 5.13V 11.90V 11.88V
4A 4A 8A 8A 239W 79% .71
3.35V 5.14V 11.84V 11.82V
8A 8A 8A 8A 274W 78% .72
3.34V 5.09V 11.94V 11.92V
10A 12A 12A 12A 395W 77% .72
3.32V 5.06V 11.92V 11.89V
10A 12A 14A 14A 442W 76% .72
3.31V 5.07V 11.86V 11.83V
CL Test
20A 20A 8A 0A 278.7W 75% .71
3.30V 4.90V 12.36V 12.41V
CL Test
4A 4A 16A 16A 420.5W 74% .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 you’re 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.

An ADDA 120MM fan.

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?


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