What PSU should I buy for my Radeon HD 7870 CrossFire system?

I have two AMD Radeon HD 7870's in CrossFire, which PSU should I buy?

Question by Terry from Canada | Answered by in Cases, Cooling & PSU on Sun, May 19 2013 1:58 AM CDT

Whats the minimum PSU I should have for two AMD Radeon HD 7870's in crossfire and an AMD FX-6100 CPU?

Hi Terry,

For your two Radeon HD 7870's in CrossFire, you'll need something in excess of 450-500W. The cards themselves will use around 150W each, so two of them at 100% load, and we're looking at around 300W just for the cards, and another 100-150W for everything else (on average).

What PSU should I buy for my Radeon HD 7870 CrossFire system? | TweakTown.com

Corsair do some of the best power supplies in the world, and Newegg currently have the Corsair CX750 PSU on special for $89.99. This is a perfect choice, and not too expensive, but it also gives you some breathing room for future upgrades. Sure, you could get a 500W and probably be fine with it, but it's better to spend $10-$20 more and give yourself ~250W of future-proofing.

Last updated: Nov 3, 2020 at 07:10 pm CST

Newsletter Subscription

Ask us a tech question!

Use the form below to submit a question for Ask the Experts.

Related Tags

Newsletter Subscription
Latest News
View More News
Latest Reviews
View More Reviews
Latest Articles
View More Articles