Radeon X800 GT
Contrary to the initial rumors that the cards will be based on the R430 chip (0.11 micron process technology), in the end it was the R423 and R480 stocks that were used for these boards. On the eve of the announcement of a new generation chip from ATI - R520 - and its younger modifications, such a move looks quite logical.
In addition, the originally assumed clock speed of the GPU was increased to 475MHz, which would be an insurmountable threshold for a 0.11 micron chip without the use of low-k - R430. But for the R423/R480, this frequency is just right, and even with a certain margin, because the RX8x0 XT boards (especially PE) initially worked at a higher frequency.
Thus, the chip potentially had 16(!) pixel pipelines. Only 8 of them were activated, but this in no way excluded the possibility of unlocking them (or at least part of them).
Another significant plus of X800GT is the exchange bus with 256Bit memory.
Specifications ATI Radeon X800 GT
| Name | Radeon X800 GT 128MB |
| Core | R423/R480 |
| Process technology (µm) | 0.13 (low-k) |
| Transistors (million) | 160 |
| Core frequency | 475 |
| Memory frequency (DDR) | 350 (700) |
| Bus and memory type | GDDR1-2 256 Bit |
| Bandwidth (Gb/s) | 22.4 |
| Pixel pipelines | 8 |
| TMU per conveyor | 1 |
| textures per clock | 8 |
| textures per pass | 8 |
| Vertex conveyors | 6 |
| Pixel Shaders | 2.0b |
| Vertex Shaders | 2.0b |
| Fill Rate (Mpix/s) | 3800 |
| Fill Rate (Mtex/s) | 3800 |
| DirectX | 9.0b |
| Anti-Aliasing (Max) | MS-6x |
| Anisotropic Filtering (Max) | 16x |
| Memory | 128 |
| Interface | PCI-E |
| RAMDAC | 2x400 |