| ATI Radeon X800 series | |
| Codename: | Loki |
| Transistors: | 160M 130nm (R420) |
| Transistors1: | 160M 130nm (R423) |
| Transistors2: | 160M 110nm (R430) |
| Transistors3: | 160M 130nm (R480) |
| Transistors4: | 160M 130nm (R481) |
| Architecture: | Radeon R400 |
| Entry: | X800 SE, X800, X800 GT |
| Midrange: | X800 GTO, X800 PRO, X800 XL, X850 PRO |
| Highend: | X800 XT, X850 XT |
| Enthusiast: | X800 XT PE, X850 XT PE |
| Openglversion: | OpenGL 2.0 |
| D3dversion: | Direct3D 9.0b Shader Model 2.0b |
| Predecessor: | Radeon X700 series |
| Successor: | Radeon X1000 series |
| Support Status: | Unsupported |
Radeon X800 is a series of graphics cards designed by ATI Technologies Inc. introduced in May 2004.
The Radeon X800 series was designed to take the position X700 XT failed to secure, with 12 pipelines and a 256-bit RAM bus. The card surpassed the 6600GT with performance similar to that of the GeForce 6800. The new X800 XL, a similar product, was positioned to dethrone NVIDIA's GeForce 6800 GT with higher memory speeds and a full 16 pipelines to boost performance. R430 was unable to reach high clock speeds, having been designed to reduce the cost per GPU, creating a need for new top-of-the-line core. The new high-end R4x0-generation arrived with the X850 series, equipped with various core tweaks for slightly higher performance than the "R420"-based X800 series. The "R480"-based X850 line was available in 3 forms: the X850 Pro, the X850 XT, and the X850 XT Platinum Edition, and was built on the reliable high-performance 130 nanometer Low-K process.
| Model | Launch | Code name | Fab (nm) | Memory (MiB) | Core clock (MHz) | Memory clock (MHz) | Config core1 | Fillrate | Memory | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MOperations/s | MPixels/s | MTexels/s | MVertices/s | Bandwidth (GB/s) | Bus type | Bus width (bit) | |||||||||
| Radeon X800 SE | Oct. 2004 | R420 (loki) | 130 | 256 | 425 | 800 | 8:6:8:8 | 3400 | 6800 | 3400 | 637,5 | 25.6 | GDDR3 | 256 | |
| Radeon X800 GT | Dec. 6, 2005 | R420 (loki) | 130 | 256 | 475 | 980 | 8:6:8:16 | 3800 | 7600 | 3800 | 712.5 | 31.36 | GDDR3 | 256 | |
| Radeon X800 | Dec. 2004 | R430 | 110 | 256 | 400 | 700 | 12:6:12:16 | 4800 | 6400 | 4800 | 600 | 22.4 | GDDR3 | 256 | |
| Radeon X800 GTO | Dec. 6, 2005 | R420 (loki) | 130 | 256 | 400 | 980 | 12:6:12:16 | 4800 | 6400 | 4800 | 600 | 31.36 | GDDR3 | 256 | |
| Radeon X800 Pro | May 5, 2004 | R420 (loki) | 130 | 256 | 475 | 900 | 12:6:12:16 | 5700 | 7600 | 5700 | 712.5 | 28.8 | GDDR3 | 256 | |
| Radeon X800 XL | Feb. 2, 2005 | R430 | 110 | 256 | 400 | 980 | 16:6:16:16 | 6400 | 6400 | 6400 | 600 | 31.36 | GDDR3 | 256 | |
| Radeon X800 XT | May 4, 2004 | R420 (loki) | 130 | 256 | 500 | 1000 | 16:6:16:16 | 8000 | 8000 | 8000 | 750 | 32 | GDDR3 | 256 | |
| Radeon X800 XT PE | May 4, 2004 | R420 (loki) | 130 | 256 | 520 | 1120 | 16:6:16:16 | 8320 | 8320 | 8320 | 780 | 35.84 | GDDR3 | 256 | |
| Radeon X850 Pro | Feb. 28, 2005 | R481 | 130 | 256 | 507 | 1040 | 12:6:12:16 | 6084 | 8112 | 6084 | 760.5 | 33.28 | GDDR3 | 256 | |
| Radeon X850 XT | Feb. 28, 2005 | R481 | 130 | 256 | 520 | 1080 | 16:6:16:16 | 8320 | 8320 | 8320 | 780 | 34.56 | GDDR3 | 256 | |
| Radeon X850 XT PE | Feb. 28, 2005 | R481 | 130 | 256 | 540 | 1180 | 16:6:16:16 | 8640 | 8640 | 8640 | 810 | 37.76 | GDDR3 | 256 | |
| Model | Launch | Code name | Fab (nm) | Memory (MiB) | Core clock (MHz) | Memory clock (MHz) | Config core1 | Fillrate | Memory | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MOperations/s | MPixels/s | MTexels/s | MVertices/s | Bandwidth (GB/s) | Bus type | Bus width (bit) | |||||||||
| Radeon X800 GT 128MB | Aug. 1, 2005 | R423 R480 (thor) | 130 | 128 | 475 | 350 | 8:6:8:16 | 3800 | 7600 | 3800 | 712.5 | 22.4 | DDR | 256 | |
| Radeon X800 GT 256MB | Aug. 1, 2005 | R423 R480 (thor) | 130 | 256 | 475 | 980 | 8:6:8:16 | 3800 | 7600 | 3800 | 712.5 | 31.36 | GDDR3 | 256 | |
| Radeon X800 | Dec. 1, 2004 | R430 (thor) | 110 | 128, 256 | 392 | 700 | 12:6:12:16 | 4704 | 6272 | 4704 | 588 | 22.4 | GDDR3 | 256 | |
| Radeon X800 GTO 128MB | Sept. 15, 2005 | R423 R480 R430 (thor) | 130 110 | 128 | 400 | 700 | 12:6:12:16 | 4800 | 6400 | 4800 | 600 | 22.4 | GDDR3 | 256 | |
| Radeon X800 GTO 256MB | Sept. 15, 2005 | R423 R480 R430 (thor) | 130 110 | 256 | 400 | 980 | 12:6:12:16 | 4800 | 6400 | 4800 | 600 | 31.36 | GDDR3 | 256 | |
| Radeon X800 Pro | May 5, 2004 | R423 (thor) | 130 | 256 | 475 | 900 | 12:6:12:16 | 5700 | 7600 | 5700 | 712.5 | 28.8 | GDDR3 | 256 | |
| Radeon X800 XL | Dec. 1, 2004 (256 MB) May 4, 2005 (512 MB) | R430 (thor) | 110 | 256, 512 | 400 | 980 | 16:6:16:16 | 6400 | 6400 | 6400 | 600 | 31.36 | GDDR3 | 256 | |
| Radeon X800 XT | Dec. 1, 2004 | R423 (thor) | 130 | 256 | 500 | 1000 | 16:6:16:16 | 8000 | 8000 | 8000 | 750 | 32 | GDDR3 | 256 | |
| Radeon X800 XT Platinum Edition | N/A | R423 (thor) | 130 | 256 | 520 | 1120 | 16:6:16:16 | 8320 | 8320 | 8320 | 780 | 35.84 | GDDR3 | 256 | |
| Radeon X850 Pro | Dec. 1, 2004 | R480 (thor) | 130 | 256 | 507 | 1040 | 12:6:12:16 | 6084 | 8112 | 6084 | 760.5 | 33.28 | GDDR3 | 256 | |
| Radeon X850 XT | Dec. 1, 2004 | R480 (thor) | 130 | 256 | 520 | 1080 | 16:6:16:16 | 8320 | 8320 | 8320 | 780 | 34.56 | GDDR3 | 256 | |
| Radeon X850 XT CrossFire Master | Sept. 29, 2004 | R480 (thor) | 130 | 256 | 520 | 1080 | 16:6:16:16 | 8320 | 8320 | 8320 | 780 | 34.56 | GDDR3 | 256 | |
| Radeon X850 XT Platinum Edition | Dec. 21, 2004 | R480 (thor) | 130 | 256 | 540 | 1180 | 16:6:16:16 | 8640 | 8640 | 8640 | 810 | 37.76 | GDDR3 | 256 | |