Can I crossfire these two cards?

[jmolayal]

Pretty sure the answer is yes, but just want to be sure..

I have this card - An AT 7870

http://www.newegg.com/Product/Produc...82E16814125418

I'm thinking I'd like to Crossfire it with this 7850:

http://www.newegg.com/Product/Produc...tem=14-127-663

Mainly because that 7850 for $110 after rebate seems like a cheap way to get some easy power. I'd be loosing out on some Stream Processors by not getting a second 7870, but I'd be saving about $80, and I think I'd save that towards getting the NEXT generation of video card down the road.

Solid plan? Fools errand? Won't work?

Thanks for any advice. If it matters, I currently play silly games like SWTOR and WoW. Planning on trying out EQ Next when it comes out sometime next year.

 

[wand3r3r]

It should work well. (I'm unsure which games work/don't with frame pacing though)

Overclock the 7850 slightly and you'll have the equivalent of 7870 crossfire. 🙂

http://www.techbuyersguru.com/Frankenfire.php

 

[Lepton87]

It will work but 7870 will get downgraded to 7850 specs so only 1024 cores will be active in both cards. Clocks won't change tough. I had 6990 crossfired with two 6950.

 

[FalseChristian]

No. They have to be the same GPU. So a 7870 with a 7870 etc. The same with NVidia.

 

[thirdeye]

No. They have to be the same GPU. So a 7870 with a 7870 etc. The same with NVidia.

This is wrong. It will work, it will simply limit the higher spec'ed card to the specs of the lower card.

 

[jmolayal]

No. They have to be the same GPU. So a 7870 with a 7870 etc. The same with NVidia.

I believe the 7870 and the 7850 Technically have the same GPU, but different clock speeds.

 

[Techhog]

No. They have to be the same GPU. So a 7870 with a 7870 etc. The same with NVidia.

They have to have the same physical GPU, true. However, they actually do have the same psysical GPU, so it turns into 7850 CF

 

[SlowSpyder]

No. They have to be the same GPU. So a 7870 with a 7870 etc. The same with NVidia.

Actually Crossfire offers a little more flexibility:

 

[3DVagabond]

It will work but 7870 will get downgraded to 7850 specs so only 1024 cores will be active in both cards. Clocks won't change tough. I had 6990 crossfired with two 6950.

Cores aren't deactivated when you crossfire 2 different cards.

 

[(sic)Klown12]

Cores aren't deactivated when you crossfire 2 different cards.

This. Both will work to full potential with his resulting performance falling inline between 2 7850s and 2 7870s.

 

[jmolayal]

Thanks for the help everyone!

 

[tweakboy]

Nope. Both nvidia and ATI , gotta be same card. gl