R600, RV610, and RV630 details unveiled

[mullered07]

Why would the corporate/home market want DX10 cards?

um for windows vista duh

 

[Teh Gimp]

WARNING:

To all the noobs screaming "OMGz ONLI 64 SHADERZ?! NV HAS 128 LOL! 8600 WILL HAV 64! OMGZ LOL PWNT!"

Realize it said 64 vec4 shaders. Vec4 shaders are a more advanced shader design than the design in G80, which uses 128 scalar shaders.

Scalar shaders can do one shader operation per cycle, vec4 can do a maximum of 4 operations.

This means that theoretically the R600 could be as powerful as having 256 G80 shaders --BUT -- not necessarily. The problem for ATI is that scalar shaders are so simple they are always at 100% usage (meaning no wasted power in the G80), but their R600's vec4 shaders are more complex -- 100% usage is very hard to achieve, they'd be lucky to get 80%.

Expect both cards to be within 20% of each other, maybe more in some, less in others...

My money is on R600 for DX10 performance, maybe a tie in DX9. This has yet to be seen however..

So, remembering that 64vec 4 = ~256 scalar shaders (NV = 128 scalar), plus the fact that R600 is 512-bit external memory bus w/ gigabit (1024bit) internal ringbus (NV = 384-bit internal/external), plus higher core and mem clocks at rumoured 800/1100 (NV = 575/900)... don't count ATI/AMD out of the game yet...

 

[Random Murderer]

if all ^that^ is true, im getting me 2 r600's

 

[Pinchy]

WARNING:

To all the noobs screaming "OMGz ONLI 64 SHADERZ?! NV HAS 128 LOL! 8600 WILL HAV 64! OMGZ LOL PWNT!"

Realize it said 64 vec4 shaders. Vec4 shaders are a more advanced shader design than the design in G80, which uses 128 scalar shaders.

Scalar shaders can do one shader operation per cycle, vec4 can do a maximum of 4 operations.

This means that theoretically the R600 could be as powerful as having 256 G80 shaders --BUT -- not necessarily. The problem for ATI is that scalar shaders are so simple they are always at 100% usage (meaning no wasted power in the G80), but their R600's vec4 shaders are more complex -- 100% usage is very hard to achieve, they'd be lucky to get 80%.

Expect both cards to be within 20% of each other, maybe more in some, less in others...

My money is on R600 for DX10 performance, maybe a tie in DX9. This has yet to be seen however..

So, remembering that 64vec 4 = ~256 scalar shaders (NV = 128 scalar), plus the fact that R600 is 512-bit external memory bus w/ gigabit (1024bit) internal ringbus (NV = 384-bit internal/external), plus higher core and mem clocks at rumoured 800/1100 (NV = 575/900)... don't count ATI/AMD out of the game yet...

Thanks for the heads up