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Power Supply for Radeon HD5870 and i7

Last response: in Components
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October 20, 2009 12:25:23 AM

Building a Core i7 machine with 4 hard drives and a Radeon HD5870

Will this power supply suffice?

Antec TruePower Quattro TPQ-1000 1000W Continuous Power ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS BRONZE Certified ...
a c 248 ) Power supply
October 20, 2009 12:32:54 AM

It's overkill!

Here are the official power requirements for the brand new ATI Radeon HD 5850 and HD 5870 video cards.


ATI Radeon™ HD5850 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended.

600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode


ATI Radeon™ HD5870 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard.

500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended

600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in • dual mode

The power supply recommendations are for an entire pc system.

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. Lately we've been seeing a few other brands offering some high quality units.
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a c 144 ) Power supply
October 20, 2009 6:56:20 PM

A good 550 watt PSU will work for a single video card. Unfortunately, there aren't many PSU's smaller than 750 watts with 4 PCI-e power cables.

And, yes. A 1 kw power supply is overkill.
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