The GT300/Fermi Thread - Part 2!

[jaredpace]

The "hot-clock" in GF100 is the shader domain, known by this name from the previous arch generations, and that includes the texture unit clock which runs at fixed 1/2 the shader rate. The "base" domain covers everything else -- ROPs, setup, display logic, etc.

The pixel rate for GF100 seems to be correct. Sure there are 48 ROPs in there, but the limitation comes from the scan-out capacity at 32 pixels per clock (same as Cypress), following the setup phase. In some cases all the ROP units could be saturated at once, like heavy colour-blending op's or processing some of the more taxing AA modes.

Thanks Fellix. So the Shader units & Texture units are different speeds, are they separate domains?