Power supply need for this build? HELP


Jan 14, 2010
what kind of power supply do i need to run this?

haf 922 case

i5-750 overclocked to 4.0 ghz stable

asus p7p55d motherboard

4gb (2x2) g skill eco ddr3-1600 ram (planning to overclock from the 1.35v to 1.5v)

xfx 5850

640gb 7200rp hd

24x dvd burner/reader

corsair p50 cooling system

x2 12" cathode rays

x3 120mm led fans (total including case fans)

x2 200mm led fans (total including case fans)

i have done my research and came up with this power supply...


will this 650w be a great power supply for this build, keep in mind overclocking ram and the cpu.

this is corsair so supposidly its rated better than it says, wattage wise.

i want to know if this power supply will be great for this build, and be good eonugh to have another 5850 added down the road in crossfire. but, if i dont decide to get another one...will this 650w be too much power? is that possible?

Thank you!

It has the necessary connectors:
Type ATX12V v2.2 / EPS12V 2.91
Maximum Power 650W
Fans 120mm double ball-bearing fan
PFC Active
Main Connector 20+4Pin
+12V Rails Single
PCI-Express Connector 4 x 6+2-Pin
SATA Power Connector 9"

It's the minimum that I would use for 2 video cards.

OOPS! I stand corrected. I was thinking the 650TX.
You should be fine with the Corsair HX650 power supply. It is a newer model with one large +12 volt rail rated at 52 amps.

One of the good things about the new ATI 5000 series cards is they require less power. Two years ago I would have been recommending a 750 watt power supply for two video cards operating in dual mode.