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So 6870 shaders are still old version?

post #1 of 4
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Do 6870 and 6850 still use VLIW-5 shaders (like 5000 series) or AMD implemented new shader structure on HD 6850 and 6870 (aka VLIW-4)?

I was told that only HD 6900 series have new shader design. Can someone verify this?
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post #2 of 4
new shader structure. this is evident in their performance. the 1120 shader's in the 6870 out perfrom the 1600 in the 5870.
    
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by Yoko Littner;11705467 
new shader structure. this is evident in their performance. the 1120 shader's in the 6870 out perfrom the 1600 in the 5870.

I haven't seen any information in AMD's slides about 6870 that it uses VLIW-4 structure. I think it's the same as 5000 series. HD 6800 only has some revisions in core area. Shaders are untouched.
http://forums.anandtech.com/showpost.php?p=30626273&postcount=665

EDIT: Wikipedia says that 6800 series still use VLIW-5 shaders. Only 6900 use VLIW-4.
http://en.wikipedia.org/wiki/Northern_Islands_%28GPU_family%29
Edited by Nautilus - 12/19/10 at 2:07pm
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post #4 of 4
Quote:
Originally Posted by Yoko Littner;11705467 
new shader structure. this is evident in their performance. the 1120 shader's in the 6870 out perfrom the 1600 in the 5870.

It's faster than the 5870 because it has more geometric throughput.
The 6800 series still uses VLIW5.
    
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