Crossfire 2 different cards, 290 N an older one

s1l3ntshadowz

Reputable
Oct 19, 2014
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Alright so I have $100 or so bucks I was gonna invest into a new hard drive as I need a bit more space but this idea hit me out of the blue: Crossfire my what I'd consider powerful AMD card with a lesser one.

Would this work? Could I crossfire my ASUS R9 290 with an older AMD card in the $100-$150 range? If so how would I do it and would it even be worth it FPS wise? I was thinking maybe this could assist me in holding off on GPU upgrades in the future for a while longer lol. That is if it works. I also read somewhere on here that it's possible but they had some chart but it was 4 years old and didn't show any newer cards.

Edit: This may actually be a dumb question but hey, gotta learn some how!
My specs
------------------
i7-3770k @4.5GHz
ASUS Maximus V Formula
16gb Transcendence memory @1600MHz (2x8)
A-Data 256GB SSD w the usual 500 something R/W
500GB Storage Hard Drive
Corsair H60 Liquid CPU cooler
AMD R9 290 @1GHz not OC'd

Aaaaand....Windows...........not 10! ha, Windows 7.
 
Solution
When you CF, it will use both cards at the speed/capacity of the least powerful card in the pairing. So you would get much worse frames doing this. Dont do this.

barto

Expert
Ambassador
Actually, that is incorrect. You can't CF two different cards in the r9 or r7 series. The concept that the more powerful card will cater to the lower one isn't true at all. The GPU (Graphic processors) on the board have to be the same.

If you have two 270x (for example), you can CF them. If the clocks are different, the faster one will down clock to the slower one.

If you have older series cards (7000 or 6000), there are certain pairs for each card you can CF. For example, you can CF a 7970 and a 7950.
 

festerovic

Distinguished
You are right barto, they wouldnt work together. (r9 and r7). I didnt even look it up because it wouldnt be worth it even if it did work. The concept of the more powerful card will cater to the lower one was not mentioned, actually I said the opposite, it would make both cards perform as if they were the lower performance card (for situations just like you mentioned).

Either way, its not worth doing.