ATI Radeon X1800 XT vs ATI Radeon X800 PRO
Graphics Processor
| GPU model | R520 | R423 |
|---|---|---|
| GPU variant | R520 XT (215RFNBKA15FG) | R423 PRO |
| Architecture | R500 | R400 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 90 nm | 130 nm |
| Number of transistors | 321 million | 160 million |
| Die size | 288 mm² | 289 mm² |
Graphics Card
| Release date | Oct 1st, 2005 | May 1st, 2004 |
|---|---|---|
| Generation | Radeon R500 PCIe | Radeon R400 PCIe |
| Production | End-of-life | End-of-life |
| Launch price | 549 USD | — |
| Interface | PCIe 1.0 x16 | PCIe 1.0 x16 |
| Reviews | 76 in our database | 226 in our database |
| Predecessor | Radeon R400 PCIe | Radeon R300 |
| Successor | Radeon R600 | Radeon R500 PCIe |
Clocks
| GPU clock | 600 MHz | 475 MHz |
|---|---|---|
| Memory clock | 700 MHz 1400 Mbps effective | 450 MHz 900 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR3 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 44.80 GB/s | 28.80 GB/s |
Render Configuration
| Pixel shaders | 16 | 12 |
|---|---|---|
| Vertex shaders | 8 | 6 |
| TMUs | 16 | 12 |
| ROPs | 16 | 12 |
Performance
| Pixel rate | 9.600 GPixel/s | 5.700 GPixel/s |
|---|---|---|
| Vertex rate | 1.200 GVertices/s | 712.5 MVertices/s |
| Texture rate | 9.600 GTexel/s | 5.700 GTexel/s |
Dimensions & Outputs
| Slot width | Dual-slot | Single-slot |
|---|---|---|
| TDP | 113 W | 48 W |
| Suggested PSU | 300 W | 200 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x VGA1x S-Video |
| Power connectors | 1x 6-pin | 1x Molex |
| Board number | A520 | — |
API Support & Features
| DirectX | 9.0c (9_3) | 9.0b (9_2) |
|---|---|---|
| OpenGL | 2.1 | 2.1 |
| OpenCL | — | — |
| Vulkan | — | — |
| Shader model | 3.0 | — |
| Pixel shader | — | 2.0b |
| Vertex shader | — | 2.0b |
