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Can you crossfire same cards from different manufacturers?

Last response: in Graphics & Displays
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November 1, 2011 9:43:24 PM

Can you crossfire two 5770 cards from different manufacturers?
a c 125 U Graphics card
November 1, 2011 9:45:33 PM

Yep! They will work, although I'd make sure to set them both to the same clock settings once installed if they are different by default. I do not know whether non-reference models work well with reference models, but in theory it should all be the same thing.
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a c 191 U Graphics card
November 1, 2011 10:20:06 PM

As long as all of the specs are the same, like have the same memory as well as clock speed. They don't necessarily have to be of the same manufacturer, yet they should be identical in specification.

For example (using a 6950)

6950 2GB + 6950 1GB = won't work

Sapphire Radeon 6950 2GB + HIS Radeon 6950 2GB = will work (in theory)
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a c 125 U Graphics card
November 2, 2011 5:39:18 PM

Actually you can put cards with different VRAM together (6950 1gb and 2gb cards, 5870 1gb and 2gb, etc). The only thing is that you'll only have the smallest VRAM amount available, so 1gb. In CF and SLI, VRAM is not additive. Both cards will carry the same amount of VRAM with the same info, it's like a redundant array (RAID 1 HDDs for example).
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a c 171 U Graphics card
November 2, 2011 8:38:03 PM

^+1
I would stick to 2 identical cards though to reduce the possibility of microstutter.
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November 12, 2011 5:42:13 AM

I'm getting a lot of conflicting information on exactly what you can do with Crossfire. Mostly that you need your cards to be in the same range for them to work and I wanted a clarification before I made my purchase.

Currently I have a 5770, can I jump to a 6950 and Crossfire?? Should I just scrap my 5770 altogether and get a 6950 or should I crossfire two 5770?

Thanks for looking.
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November 12, 2011 6:04:56 AM

Thanks for post that by the way. It is very useful.
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a b U Graphics card
November 12, 2011 6:20:47 AM



It just have to comply with this
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