NVIDIA's GeForce 8600 GTS, 8600 GT and 8500 GT graphics processors are here, so let's go over the exact specifications. The GeForce 8600 GTS features 32-stream processors clocked at 1.45 GHz along with 256MB of GDDR3 memory clocked at 1.0 GHz. A 128-bit memory interface connects the memory to the GPU for 32GB/sec of memory bandwidth. The GeForce 8600 GT has the same 32-stream processors as the GTS; however, the unified shaders have a 1.18 GHz clock. Memory bandwidth is downgraded to 22.4 GB/sec thanks to slower core and memory clocks, at 540 MHz and 700 MHz, respectively. The GeForce 8500 GT has 16-stream processors clocked at 900 MHz and a 450 MHz core with DDR2 memory clocked at 400 MHz. The GeForce 8500 GT features the same 128-bit memory interface as the GeForce 8600-series. Memory bandwidth is downgraded to 12.8 GB/sec.
News source: DailyTech