Power supply needed for this build.


Jan 14, 2010
Coolermaster HAF 922 case

lite-on 24x dvd writer

500gb 7200rpm 3gb/s hd

sapphire radeon hd 5770 1gb ddr5

ocz 4gb ddr2-1066 memoery

x2 cold cathode lights 12"

asus p5q pro turbo motherboard

intel e8400 wolfdale 3.0ghz (i want to overclock this to 4.0ghz stable)

extra 120mm case fan

coolermaster v8 cpu cooler

I would like to know what kind of power supply i would need, like how much watts.

Can you give me a suggestion, i dont know what brand of power supplies would be the best for this set-up taking into consideration i want to overclock the e8400 to 4.0ghz stable.

Also, i will use this computer mainly for WoW and i know this may sound stupid, but will this build handle WoW with ease, constant 60+ fps everywhere? this would be played on a 23" 1920 x 1200 hd monitor using the 5770's hdmi output.

Thank you everyone!

The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the +12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the +12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5XXX series cards which use less power due to their energy efficiency.

A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.

In addition the power supply should be at least 80+ Bronze certified for energy efficiency. There are some models available which have achieved 80+ Silver and 80+ Gold Certifications.

Corsair, PC Power & Cooling, and Seasonic are some of the brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units. One example would be the Antec Earthwatts series which is a major improvement over Antec’s older psu’s like the Basiq models.

For a system with just one video card the Corsair VX550 suggested by others would be an appropriate choice.