I know I missed this somewhere but..

[Unknown Soldier]

someone please point out to me what the 16-1-1-1 and 16-1-3-1 of the R520 and R580 stands for again.

Thx

US

 

[no-X]

1. ROPs
2. TMUs per ROP
3. pixel shader engines per ROP
4. Z/Stencil ops per ROP

?

 

[Tim]

someone please point out to me what the 16-1-1-1 and 16-1-3-1 of the R520 and R580 stands for again.

R520:
16 ROPs
1 texture unit per ROP
1 pixel Shader pipe per ROP
1 z compare unit

R580
3 Shader pipes per ROP

Everything seems to be organized in quads, the R520 has 4 pixel shader quads and R580 should have 12.

 

[Unknown Soldier]

Ta

 

[Luminescent]

I believeR580 still makes use of 4 pixel quads, however each quad contains 3 shader ALUs, as opposed to R520's 1.

 

[trinibwoy]

I believeR580 still makes use of 4 pixel quads, however each quad contains 3 shader ALUs, as opposed to R520's 1.

Kinda like G70's 8 ALU's per quad? R580 is gonna be 12 ALU's per quad - 3 per "pipe" ?

 

[Dave Baumann]

No.

Taking RV530 as the example, it has 4 pipes with "three shaders" these are parallel, so its handling three "pixels" (fragments) per pipeline in this part of the pipeline - each shader unit is the same as ATI's other shader units, consistin of a full ALU and a second ADD + Modifier ALU. Each quad in G70 is sill handling 4 pixels, its just that the ALU arrangement (again, two per pipe) is a little more capable than ATI's.

 

[Unknown Soldier]

So you saying G70 pipes are better than ATi's?

with "three shaders" these are parallel, so its handling three "pixels" (fragments) per pipeline in this part of the pipeline

 

[nAo]

So you saying G70 pipes are better than ATi's?

No, he's saying it's more capable, that's it.