10:30 AM - 03/09/2006 by
Darren E. Polkowski
Lastly, the die is 125 sqmm. This makes it 71-sqmm smaller that the 7900GTX and 24-sqmm smaller than the ATI RV530. This smaller package does away with the requirement of an additional power connection.
The chart below shows the core differences between the new- and last-generation architecture.
| NVIDIA GeForce 7900, 7800, & 7600 Specifications | |||||||
|---|---|---|---|---|---|---|---|
| 7900 GTX | 7900 GT | 7800 GTX 512 | 7800 GTX | 7800 GT | 7800 GS AGP | 7600 GT | |
| Process Technology | 90nm | 90nm | 110nm | 110nm | 110nm | 110nm | 90nm |
| Number of Transistors | 278M | 278M | 302M | 302M | 302M | 302M | 178M |
| Core Clocks (Vertex, Core) in MHz | 700/650 | 470/450 | 550/550 | 470/430 | 440/400 | 375/375 | 560/560 |
| Memory Clock (MHz / data rate) | 800/1600 | 660/1320 | 850/1700 | 600/1200 | 500/1000 | 600/1200 | 700/1400 |
| Vertex Shaders (#) | 8 | 8 | 8 | 8 | 7 | 6 | 5 |
| Pixel Shaders (#) | 24 | 24 | 24 | 24 | 20 | 16 | 12 |
| ROPs (#) | 16 | 16 | 16 | 16 | 16 | 8 | 8 |
| Memory Interface | 256-bit | 256-bit | 256-bit | 256-bit | 256-bit | 256-bit | 128-bit |
| Frame Buffer Size | 512 MB | 256 MB | 512 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Memory Bandwidth (GB/sec) | 51.2 | 42.2 | 54.4 | 38.4 | 32 | 38.4 | 22.4 |
| Vertices/Second (Millions) | 1400 | 940 | 1100 | 940 | 770 | 562.5 | 700 |
| Pixel Fill Rate (# ROPs x clk) in Billions/sec | 10.4 | 7.2 | 8.8 | 6.88 | 6.4 | 3 | 4.48 |
| Texture Fill Rate (# pixel pipes x clk) in Billions/sec | 15.6 | 10.8 | 13.2 | 10.32 | 8 | 6 | 6.72 |
| RAMDACs | 400 MHz | 400 MHz | 400 MHz | 400 MHz | 400 MHz | 400 MHz | 400 MHz |
| Bus Technology | PCI Express | PCI Express | PCI Express | PCI Express | PCI Express | AGP 8X | PCI Express |
Here is a slide Nvidia showed us at editor's day comparing the G73 and R530.
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