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Crossfire Questions

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September 28, 2010 9:03:09 AM

just want to know whether it is possible on my current mobo (GA-790XT-UD4P) to crossfire a 5850 and a 5870. second question rerferes to the first i know that my board has on ly 16 lanes so it would go down to 8 lanes for each fx card what effect on performance would this have. last question what sort of psu do i need to run this set up, something like a antec True Power 850?

thx

More about : crossfire questions

September 28, 2010 9:16:35 AM

1. Yes, you can Cf HD5850 with HD5870, but HD5870 speed will reduce to match HD5850 speed.
2. Going x8 x8 (CF) setup is not bad at all, you only lose a little performance, the only slot you want to avoid is x4.
3. Good quality PSU like Corsair, Antec, Seasonic, PCP&C, OCZ, SilverStone with 750W can handle dual HD5850/70.
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September 28, 2010 9:25:53 AM

wa1 said:
1. Yes, you can Cf HD5850 with HD5870, but HD5870 speed will reduce to match HD5850 speed.
2. Going x8 x8 (CF) setup is not bad at all, you only lose a little performance, the only slot you want to avoid is x4.
3. Good quality PSU like Corsair, Antec, Seasonic, PCP&C, OCZ, SilverStone with 750W can handle dual HD5850/70.

when you say that the 5870 will "reduce to match the HD5850" does this mean that the performance jump would be the same if a bought another 5850. also would overclocking the 5850 i have at the moment mean that the 5870's performance drop would be less.
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September 28, 2010 9:48:42 AM

Yes, so instead of buy HD5870, you will better if you buy another HD5850.
Or, you can buy HD5870 and OC your HD5850 to match HD5870 speed.
there's many alternatives way... :) 
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September 28, 2010 12:25:27 PM

Best answer selected by mother242.
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September 28, 2010 12:28:09 PM

This topic has been closed by Mousemonkey
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