Tech Specs
The GeForce 7950GT should exhibit performance gains over the GeForce 7900GT just from faster clock frequencies - it has all of the same core components as the 7900GT, but is running them 100 MHz faster. The vertex shaders are operating at 570 MHz, and the rest of the core is at 550 MHz. At 700 MHz (1.4 GHz DDR), the memory is 40 MHz faster than the GeForce 7900GT. Below is a chart that lays out all of the 7000 series cards and their Nvidia reference design specifications.
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| NVIDIA GeForce Reference Specifications | |||||
|---|---|---|---|---|---|
| Row 0 - Cell 0 | 7950GX2 | 7900GTX | 7950GT | 7900GT | 7900GS |
| Process Technology (nm) | 90 | 90 | 90 | 90 | 90 |
| Processor Core | G71 | G71 | G71 | G71 | G71 |
| Number of Processors | 2 | 1 | 1 | 1 | 1 |
| Number of Transistors per Processor (Millions) | 278 | 278 | 278 | 278 | 278 |
| Vertex Frequency (MHz) | 500 | 700 | 570 | 470 | 470 |
| Core Frequency (MHz) | 500 | 650 | 550 | 450 | 450 |
| Memory Clock (MHz) | 600 | 800 | 700 | 660 | 660 |
| DDR Rate (MHz) | 1200 | 1600 | 1400 | 1320 | 1320 |
| Vertex Shaders (#) | 16 | 8 | 8 | 8 | 7 |
| Pixel Shaders (#) | 48 | 24 | 24 | 24 | 20 |
| ROPs (#) | 32 | 16 | 16 | 16 | 16 |
| Memory Interface (bit) | 256 | 256 | 256 | 256 | 256 |
| Frame Buffer Size per Processor (MB) | 512 | 512 | 256 | 256 | 256 |
| Memory Bandwidth (GB/sec) per processor | 38.4 | 51.2 | 44.8 | 42.24 | 42.24 |
| Vertices/Second (Millions) | 2000 | 1400 | 1140 | 940 | 822.5 |
| Pixel Fill Rate (# ROPs x clk) in Billions/sec | 16 | 10.4 | 8.8 | 7.2 | 7.2 |
| Texture Fill Rate (# pixel pipes x clk) in Billions/sec | 24 | 15.6 | 13.2 | 10.8 | 9 |
| RAMDACs (MHz) | 400 | 400 | 400 | 400 | 400 |
| Bus Technology | PCI Express | PCI Express | PCI Express | PCI Express | PCI Express |
| Row 20 - Cell 0 | |||||
| Row 21 - Cell 0 | 7800GTX 512 | 7800GTX | 7800GT | 7800GS AGP | 7600GT |
| Process Technology (nm) | 110 | 110 | 110 | 110 | 90 |
| Processor Core | G70 | G70 | G70 | G70 | G73 |
| Number of Processors | 1 | 1 | 1 | 1 | 1 |
| Number of Transistors per Processor (Millions) | 302 | 302 | 302 | 302 | 178 |
| Vertex Frequency (MHz) | 550 | 470 | 440 | 375 | 560 |
| Core Frequency (MHz) | 550 | 430 | 400 | 375 | 560 |
| Memory Clock (MHz) | 850 | 600 | 500 | 600 | 700 |
| DDR Rate (MHz) | 1700 | 1200 | 1000 | 1200 | 1400 |
| Vertex Shaders (#) | 8 | 8 | 7 | 6 | 5 |
| Pixel Shaders (#) | 24 | 24 | 20 | 16 | 12 |
| ROPs (#) | 16 | 16 | 16 | 8 | 8 |
| Memory Interface (bit) | 256 | 256 | 256 | 256 | 128 |
| Frame Buffer Size per Processor (MB) | 512 | 256 | 256 | 256 | 256 |
| Memory Bandwidth (GB/sec) per processor | 54.4 | 38.4 | 32 | 38.4 | 22.4 |
| Vertices/Second (Millions) | 1100 | 940 | 770 | 562.5 | 700 |
| Pixel Fill Rate (# ROPs x clk) in Billions/sec | 8.8 | 6.88 | 6.4 | 3 | 4.48 |
| Texture Fill Rate (# pixel pipes x clk) in Billions/sec | 13.2 | 10.32 | 8 | 6 | 6.72 |
| RAMDACs (MHz) | 400 | 400 | 400 | 400 | 400 |
| Bus Technology | PCI Express | PCI Express | PCI Express | AGP 8X | PCI Express |