Can I do Crossfire with two R9 290's on ASRock H97M Pro4 ?

[mamomi12]

Hey,I was wondering if i can do Crossfire with two 290 on ASRock H97M Pro4 ?

 

[DonkeyOatie]

You can Crossfire on that board. The second slot runs at x4, but that should still be enough for a 290. What's your PSU?

Specification explicitly mention Crossifre. http://www.asrock.com/mb/Intel/H97M%20Pro4/?cat=Specifications

 

[mamomi12]

I haven't built it yet but i want to get 600W and one 290 and after a few months to get the second one .

 

[DonkeyOatie]

That PSU is far too weak for two 290s in crossfire. Each uses over 250W and your system will use about 100W. I would not want to be using more than 70% of my PSU's rating to handle sudden demand spikes, I'd want 850W of good PSU, at least.

 

[mamomi12]

That PSU is far too weak for two 290s in crossfire. Each uses over 250W and your system will use about 100W. I would not want to be using more than 70% of my PSU's rating to handle sudden demand spikes, I'd want 850W of good PSU, at least.

Then Can i Crossfire 2 r9 280x on 730W PSU ?

 

[DonkeyOatie]

The 280x is also about 250W, so again, I'd want a 850W PSU. 730W of PSU is goof for about 400W of total system, and that would be two 200W GPU's Crossfired.