After a very long time, i dont know exactly how long, but it seems it has been ages since Nvidia released a WHQL certified drivers for their 9-Series graphic cards. These latest driver is version 175.16 for both Windows XP and Vista.
Quoted from NVIDIA Official Site
# Supports GeForce FX, 6, 7, 8, and 9 series GPUs including these newly released GPUs:
- GeForce 9800 GX2
- GeForce 9800 GTX
- GeForce 9600 GT
- GeForce 9600 GSO
- GeForce 8300
- GeForce 8200/ nForce 730a
- GeForce 8100/NVIDIA nForce 720a
# Supports single GPU and NVIDIA SLI™ technology* on DirectX 9 and OpenGL.
# Adds new PureVideo HD features for GeForce 9800 GX2, 9800 GTX, 9600 GT and 9600 GSO:
- Dynamic Contrast Enhancement
- Dynamic Blue, Green & Skin Tone Enhancements
- Dual-Stream Decode Acceleration
# Improved performance on many DirectX 9 and OpenGL applications.
# Numerous game and application compatibility fixes.
# GPU overclocking and temperature monitoring is available by installing NVIDIA System Tools software.
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