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HD5770 Reported not to Support Double Precision for Open CL applications

post #1 of 10
Thread Starter 
Geeks3d.com reports that the HD5770 doesn't support Double Precision for Open CL applications. Is this true?

http://www.geeks3d.com/20091014/rade...point-support/


Where would this be useful? Is this feature important?

Why would the HD5770 not include it when many 4000 series cards had it and the new HD5800 series have it as well?
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B.K.T.
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post #2 of 10
I would also like to know if this is true


a comment from source

Quote:
This is to be expected. Gamers don’t really need double-precision pipeline and I doubt many games will be written requiring double-precision, not even for game physics. Even nVidia has stated that the lower-end Fermi chips won’t have things like double-precision or ECC memory. This is just AMD playing it smart, they made it so that RV800 feature set more scalable so they can better target the different price brackets while maintaining the target margins.
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post #3 of 10
is it a big deal? i just bought 2 5770s
Xion
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post #4 of 10
Not really.
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Hsvkinyodh
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by Lord Xeb View Post
Not really.
Are you sure?

I don't really know. Is it going to effect folding performance or gaming?
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B.K.T.
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post #6 of 10
Quote:
Originally Posted by SonDa5 View Post
Are you sure?

I don't really know. Is it going to effect folding performance or gaming?
I think some F@H WU's only work with double precision. Uh oh!
post #7 of 10
i only care about gaming performance im good there right?
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post #8 of 10
Quote:
Originally Posted by Blaze051806 View Post
i only care about gaming performance im good there right?
Yep. It only effects things that would need DP. Folding (not ALL WUs need it. Only the big ones that are like 1888 and such) need DP.
Edited by Lord Xeb - 10/26/09 at 4:14pm
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Hsvkinyodh
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post #9 of 10
It won't affect gaming, period.
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post #10 of 10
Thread Starter 
What about Open CL tweaks for similar PhysX performance? This was mentioned in the link I posted.
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B.K.T.
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