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7930, 7970, 7990 cfx

post #1 of 5
Thread Starter 
Will my current 7970 work in CrosFire with a 7930, and then a 7990 which I will add later?
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Hackintosh
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post #2 of 5
Quote:
Originally Posted by rabidz7 View Post

Will my current 7970 work in CrosFire with a 7930, and then a 7990 which I will add later?

The HD 7970 will work with the HD 7870 Tahiti LE (7930) but your Hd 7970 will be lowered to its performance.

Your HD 7970 will become a 2GB card and will be limited by the HD 7870 Tahiti Le 256bit bus. (HD 7970 = 3GB 384 bit bus)


Also you won't be able to add a HD 7990 to the equation because the HD 7870 Tahiti Le and HD 7990 only have a single crossfire bridge connector.

7870 tahiti LE


HD 7990



While the HD 7970 has two crossfire bridges




I recommend two HD 7970 and maybe add a third HD 7970 later on


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post #3 of 5
Best option is a 7990 and cfx later or 7970 and cfx later. One 7990 or 2 7970 's will be plenty horsepower for some time to come. The best is always go for the best single card solution you can afford. Seeing that you own a 7970 get another.

7930 and 7970 cfx is a waste as the 7970 will be reduced to a 7970.
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post #4 of 5
Thread Starter 
Can I crossfire a 7990 a 7970 and a 7970
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Hackintosh
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post #5 of 5
Quote:
Originally Posted by rabidz7 View Post

Can I crossfire a 7990 a 7970 and a 7970

yes you can that would essentially give you quad 7970's
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