While I don't have direct comparisons of 6990s, I know for my 5870s, brand was essentially meaningless in terms of performance.
I hear that XFX tends to be worth the slight premium due to the double life time warranty, making them have a slightly better resale value, but I don't have any personal experience with the reselling of the cards yet.
Topic: Gigabyte vs XFX vs Powercolor in the Radeon 6990 (Read 1957 times)
Is there any difference between these manufactures? Do they function differently? Is one better for mining than another?
Lakehead
Lakehead
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