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Second Card on MSI P55A Fuzion

post #1 of 7
Thread Starter 
I currently have a Radeon 5850, but want a upgrade. Would it make sense to get another 5850 for crossfire, or just get a 6970 and run it together with the 5850 i already have ?
I plan on staying on the 1156 socket for a while yet, and probably not upgrading for another year or so. Running on a single 23" Ezio screen.
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post #2 of 7
You can't crossfire different series card, they have to have the same first two numbers, so any 58xx cards will crossfire and any 69xx cards will go together, but not cross series.

I would say get a 6970, or get a GTX 570.
post #3 of 7
Thread Starter 
I know they need to have 2 matching cards for crossfire. The mobo can run any 2 cards, since it has the Lucid chip onboard. Just figured crossfire would work better, but maybe not on so old cards vs a 6970+5850. I want to stick to radeon since it can only handle crossfire 16+16, in sli it's 8+8 afaik. Should maybe have included this in the first post. I'm leaning towards the 6970 since i probably won't experience any difference vs the 570 on a single screen, and i'm a bit sceptical to installing both nvidia and amd drivers plus the hydra software.
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post #4 of 7
You'll get terrible performance, probably less than a single card since Lucid drivers suck really bad. Just sell the 5850 and grab a pair of 6950s which offer almost everything the 6970 does but for less, and you can just do a mild overclock for the same performance
    
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post #5 of 7
Quote:
Originally Posted by spiralstaircase View Post
I know they need to have 2 matching cards for crossfire. The mobo can run any 2 cards, since it has the Lucid chip onboard. Just figured crossfire would work better, but maybe not on so old cards vs a 6970+5850. I want to stick to radeon since it can only handle crossfire 16+16, in sli it's 8+8 afaik. Should maybe have included this in the first post. I'm leaning towards the 6970 since i probably won't experience any difference vs the 570 on a single screen, and i'm a bit sceptical to installing both nvidia and amd drivers plus the hydra software.
8x vs 16x is basicly the same. I am running my 580 at 8x and there is absolutely no difference. Most card can't saturate 8x, unless they have dual GPUs on a single PCB.
post #6 of 7
Thread Starter 
Quote:
Originally Posted by thrasherht View Post
8x vs 16x is basicly the same. I am running my 580 at 8x and there is absolutely no difference. Most card can't saturate 8x, unless they have dual GPUs on a single PCB.


Ah thanks, i have never tried a multi gpu setup. Don't look like i'm going to at this point either if the Lucid is that terrible. Hopefully i can sell the 5850,i have put heatsinks on the ram, that will not come off without pulling the modules with them.
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post #7 of 7
You can multiGPU on several cards on AMD. If you have a 5850, you could Xfire it with a 5870, but no 6000-series would work.

AMD Xfire has more freedom than Nvidia SLI, but still you are a bit limited on options.
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