| . | RV770XT | RV770PRO | RV770PRO |
|---|---|---|---|
| Handelsname | HD 4870 | HD 4850 | HD 4850 GDDR3 |
| Verfahren | 55 nm | 55 nm | 55 nm |
| Chiptakt | 850 MHz | 650 MHz | 650 MHz |
| Shaderdomain | 1050 MHz | 850 MHz | 850 MHz |
| Speichertakt | 1935 MHz | 1728 MHz | 1143 MHz |
| Streamprozessoren | 480 | 480 | 480 |
| TMUs | 32 | 32 | 32 |
| ROPs | 16 | 16 | 16 |
| FLOPs (MADD/MUL) | 1008 GFlops | 816 GFlops | 816 GFlops |
| Texelfüllrate | 27.200 MT/s | 20.800 MT/s | 20.800 MT/s |
| Speicherinterface | 256 Bit | 256 Bit | 256 Bit |
| Speichergröße | 1024 MiB | 512 MiB | 256 MiB 512 MiB |
| Speichertyp | GDDR5 | GDDR5 | GDDR3 |
| Speicherbandbreite | 123,8 GB/s | 110,5 GB/s | 73,2 GB/s |
| TDP | 150 W | 110 W | 110 W |
| MSPR | $349 | $269 | tba |
| Release | Mai 2008 | Mai 2008 | tba |
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