Which setup is better? 2 6950's or 1 7970? Thanks for your help.
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Go for the 7970, specially if you can get the Gigabyte SOC version or the MSI lightning. I've a friend that always worked with ATI and he told me that most crossfire's have a lot of driver issues. Good luck
6950 is a great card.i know a lot of people will suggest 7970 but 6950 CF is also a great setup(only if you already have a 6950) otherwise 7970 gtx 680 is a better choice.