Tech content trusted by users in North America and around the world
6,798 Reviews & Articles | 46,955 News Posts
Make us an awesome TweakTown wallpaper, win a Corsair Hydro H110i GT

Ask the Experts Question: What PSU should I buy for my Radeon HD 7870 CrossFire system?

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 asked by Terry from Canada | | Cases, Cooling & PSU Content | Posted:
Ask Question | Comment | Font Size: AA

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).




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.

Related Tags

Ask us a tech question!

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

Got an opinion on this Q&A? Post a comment below!
Subscribe to our Newsletter

Latest News Posts

View More News Posts

Forum Activity

View More Forum Posts

Press Releases

View More Press Releases