Crossfire with R9 285

nickboutalas

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Jul 31, 2014
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Hello guys,
I am thinking of buying a new gpu and I was looking at the R9 285. I read at AMDs website that the maximum of gpus in crossfire with the r9 285 are 2 without Crossfire bridge required and I also know that with Crossfire you can use any amd gpu as long as it uses the same architecture(GCN).I have two questions:
a) Can I have more than 2 gpus if I use the bridge for Crossfire
b) Can I use for example the R9 280x(that requires the bridge) for Crossfire if I use the bridge

Thank you in advance
:)
 


The R9 285 is faster than the R9 280. The R9 280 just has 1GB VRAM more but that means far from it being faster.

Anyways, do not consider crossfire/SLI for low/mid-end graphics cards. It's not worth it. Especially get more than 2 GPU's out of your head, there is no noticeable improvement.

One powerful graphics card is a better solution then two average graphics cards.
 
My bad its early for me this morning lol The r 280 x is faster then the r 285 you can look that up if you want,
It is always best to run the most powerful single gpu card, then to crossfire, same as SLI UNLESS we are talking A R 295..... OR NVidia EQUAL. But the difference is modest between the r 280 and 285 the 280 most of the time is far cheaper then the 285.
 
If it where me I would go for the R 290 card call it a day a lot of sales going on with them as of now would cost less then 2 of the R 285 or wait for the new 300 Gpu card from AMD hopefully they wont be all rebadges again seems Nvidia and AMD like doing that a lot instead of focusing on making new ones these days.
 


Well still but will I be able to have more than two Gpus if I have the bridge or not

 
Thnx guys but I am not buying both gpus now. I am considering buying a pc and i dont want to spend that much money.I am asking because want to know if later instead of buying a new gpu I can buy another one and do crossfire
 
a) No, the maximum number of 285 in Crossfire is 2 no matter what. Also, you cannot use the bridge in this gpu, as it uses the pcie to do all the interaction. It even doesn't have the bridge connector.
b) For the moment you cannot. Maybe with dx12 we will be able to mix different chips, but it's just rumours.