The 6600 debuted with a core clock frequency of 350 MHz and the memory running at 400 MHz. The XFX card delivers better performance with the core frequency raised by 50 MHz and the benefit of a faster memory type (DDR2 instead of GDDR1) running at the same clock frequency.
Here is a listing of the key facts about GeForce 6600 PCI Express with DDR2:
DirectX support: DirectX 9.0c Shader Model SM 3.0
Vertex shaders: 3
Pixel pipelines: 8
RAMDAC: 400 MHz
Manufacturing process: 110 nanometer
Transistors: 146 million
Core clock speed: 400 MHz
The XFX uses Infineon memory modules
Memory clock speed: 400 MHz (800 DDR)
Memory expansion: 256 MB
Memory technology: DDR2
Memory bus width: 128 bit
MSRP: $99
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