The GeForce 9 series is the ninth generation of Nvidia's GeForce series of graphics processing units, the first of which was released on February 21, 2008. Products are based on a slightly repolished Tesla microarchitecture, adding PCIe 2.0 support, improved color and z-compression, and built on a 65 nm process, later using 55 nm process to reduce power consumption and die size (GeForce 8 G8x GPUs only supported PCIe 1.1 and were built on 90 nm process or 80 nm process). GeForce 9300 Series Geforce 9100 G 65 nm G98 GPU PCI-E x16 64-bit bus 4 raster operations pipelines (ROP), 8 unified shaders 540 MHz core clock 256 MB DDR2, 400 MHz memory clock 1300 MHz shader clock 5.1 G texels/s fill rate 7.6 GB/s memory bandwidth Supports DirectX 10, SM 4.0 OpenGL 2.1 compliance Supports 1st generation PureVideo HD technology with partial VC1 decoding Geforce 9300 GS On May 1, 2008, the GeForce 9300 GS was officially launched. 80 nm G86 GPU PCI-E x16 64-bit bus 8 ROP, 16 unified shaders 450 MHz core clock 512 MB DDR2, 400 MHz memory clock 900 MHz shader clock 3.6 Gtexels/s fill rate 6.4 GB/s memory bandwidth Supports DirectX 10, SM 4.0 OpenGL 2.1 compliance GeForce 9400 Series GeForce 9400 GT On August 27, 2008, the GeForce 9400 GT was officially launched. 65 nm G96 GPU 16 stream processors 550 MHz core, with a 1350 MHz unified shader clock 4.4 Gtexels/s fillrate 256/512/1024 MB 800 MHz DDR2 or 256 MB 1600 MHz GDDR3, both with a 128-bit memory bus 12.8 GB/s memory bandwidth for boards configured with DDR2 800 MHz memory Supports DirectX 10, Shader Model 4.0, OpenGL 3.3, and PCI-Express 2.0 Supports 2nd generation PureVideo HD technology with partial VC1 decoding and HybridPower technology. Minimum of 300 watt power supply GeForce 9500 Series GeForce 9500 GT On July 29, 2008, the GeForce 9500 GT was officially launched. 65 nm G96 GPU 32 stream processors (32 CUDA cores) 4 multi processors (each multi processor has 8 cores) 550 MHz core, with a 1400 MHz unified shader clock 8.8 Gtexels/s fillrate 256/512/1024 MB 1,600 MHz GDDR3 memory or 256 MB/512 MB 1,000 MHz GDDR2 memory, both with a 128-bit memory bus 25.6 GB/s memory bandwidth for boards configured with GDDR3 800 MHz memory Supports DirectX 10, Shader Model 4.0, OpenGL 3.3, and PCI-Express 2.0 Supports 2nd generation PureVideo HD technology with partial VC1