Zotac GTX 275 AMP | GeForce GTX 275 | GeForce GTX 285 | Radeon HD 4890 | |
Chip | G200 | G200 | G200 | RV790 |
Process | 55 nm | 55 nm | 55 nm | 55 nm |
Transistors | ca. 1.4 Mrd. | ca.1.4 Mrd. | ca.1.4 Mrd. | ca. 959 Mio. |
GPU clock | 702 MHz | 633 MHz | 648 MHz | 850 MHz |
Shader (MADD) | 240 unified | 240 unified | 240 unified | 160 (5D) |
Shader clock | 1512 MHz | 1404 MHz | 1476 MHz | 850 MHz |
Memory | 896 GDDR3 | 896 MB GDDR3 | 1024 MB GDDR3 | 1024 MB GDDR5 |
Memory clock | 1260 MHz | 1134 MHz | 1142 MHz | 1950 MHz |
Memory interface | 448 Bit | 448 Bit | 512 Bit | 256 Bit |
Memory bandwidth | 141'120 MB/s | 127'008 MB/s | 158'976 MB/s | 124'800 MB/s |
ROPs | 28 | 28 | 32 | 16 |
TMUs | 80 | 80 | 80 | 40 |
TAUs | 80 | 80 | 80 | 40 |
Shader model | SM4 | SM 4 | SM 4 | SM 4.1 |
Maximum board power | ca. 250 Watt | 219 Watt | 183 Watt | 190 W |
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