BF2S Forums Is there a problem here? Regarding GFX clock speed - Enlighten me.

MuseSeeker wrote:

Agent_Dung_Bomb wrote:

The thing to remember is that the 6800GT has 16 pixel pipelines & ROP's, where the 6600GT has 8 pixel pipes & 4 ROP's.  The 6800GT has a 256-bit memory bus, and the 6600GT is only 128-bit.  The 6600GT will have fewer pixel and vertex shaders, but I was unable to find an exact figure on the shader numbers.

In other words 68 blows 66 out of the water? Oh and "ROP's" ?

The Render Output Unit, often abbreviated as "ROP", and sometimes called (perhaps more properly) Raster Operations Pipeline, is one of the final steps in the rendering process of modern 3D accelerator boards. The pixel pipelines take pixel and texel information and process it, via specific matrix and vector operations, into a final pixel or depth value. The ROPs perform the transactions between the relevant buffers in the local memory - this includes writing or reading values, as well as blending them together.

Historically the number of ROPs and the number of pixel pipelines have been equal. However, as of 2004, several cards have decoupled the two to allow optimum transistor allocation for application workload and available memory performance. The nVidia GeForce 6600 uses 8 pixel pipelines and 4 ROPs, resulting in a chip performing as well as a 8x8 combination would. The "NV42" variant of GeForce 6800 does the same, with a 12x8 configuration. The brand new GeForce 7600 using a 12x8 combination.