Can I crossfire an R9 280 and a 7850?

[Jackmando]

I think that you can cross fire the same architectural graphics card and are they the same?

 

[natedawg72]

No you can't. They need to be the same GPU, ie R9 280/7950s or 7850s. The R9 280 is a rebranded 7950, that's what you would need for an r9 280.

[strike]I believe the 7850 did not get rebranded, so there isn't a "new" one to match it with. [/strike]The r9 270 and 270x are both 7870s, one is just clocked slower.

Edit: the 7850 rebrand is the R7 265 as renz496 pointed out.

 

[Jackmando]

No you can't. They need to be the same GPU, ei both R9 280s or both 7850s. The R9 280 is a rebranded 7950.

I thought that was only with Nvidia cards that you was limited to the same cards?

 

[natedawg72]

I thought that was only with Nvidia cards that you was limited to the same cards?

Nope, that's with both Crossfire and SLI. The only possible exception is AMD APUs, which can do hybrid-crossfire with certain lower end AMD GPUs, but that really isn't the same as normal crossfire.

 

[Normark]

I have a rule never to ask for advice on forums, because as in this case its rare to get useful answers.
What the community is failing to do is explain is that you can crossfire the matching GPU cores only.
The hd 7870 and 7950/70/90 share the same Tahiti gpu core with the r9270/270x (both different speed versions of the hd 7870) and the r9 280/280x and upwards so you can crossfire any combination of these.
The 7850 wont work in your question combination as it runs on a different gpu type called pitcairn gpu.

 

[renz496]

I think that you can cross fire the same architectural graphics card and are they the same?

no you can't. crossfire is much less strict than SLI but you still need both card using the same chip. 280 (or 7950) is based on tahiti chip while 7850 (or R7 265) is based on pitcairn chip.