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Best Tool to know Power Supply

Last response: in Components
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February 10, 2010 11:18:09 AM

I would like to know which is the best method to calculate what Power Supply I need.

A simple tool to say...

" 1 x HD 7200 rpm, 1 x i5 processor, 1 motherboard with 5 PCie, 1 x Pcie Graphics card..." = 480 W

Ok then i choose a 600 W.

More about : tool power supply

February 11, 2010 1:51:52 PM

Thanks man.

I used it but... I think that it is very happy. I put a lot of HD, card's, etc, but I can work with a 400 W !!!.

:-/ ???
a c 248 ) Power supply
a b U Graphics card
February 13, 2010 8:58:25 AM

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.

Before purchasing a new psu you will need to decide whether you will eventually have a pc with one or two video cards.

Corsair and Seasonic are two 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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