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How much watts can PSU handle?

Last response: in Components
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January 21, 2010 3:38:09 PM

Hello everyone.. im looking for PSU and i dont know how much watts i must to by and if can handle it.. my currently system is :

2 x evga gtx260 (in sli mode)
2 hard drives 500gb each (in raid mode)
1 dvd drive
mobo: asus striker II formula
cpu: intel core2 Q6600

I also doing overclocking for my CPU and i want the maximum performance.. i thinking of 850w or 1000w PSU but 1000w PSU are very expensive.. will 850w could handle for my requirements or i must to go for more watts? :??: 
thank you....

More about : watts psu handle

a c 248 ) Power supply
January 21, 2010 3:53:29 PM

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.
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