ATI Radeon X1800 XT vs NVIDIA GeForce 8400 GS
Graphics Processor
| GPU model | R520 | G86 |
|---|---|---|
| GPU variant | R520 XT (215RFNBKA15FG) | G86-213-A2 |
| Architecture | R500 | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 90 nm | 80 nm |
| Number of transistors | 321 million | 210 million |
| Die size | 288 mm² | 127 mm² |
Graphics Card
| Release date | Oct 1st, 2005 | Apr 17th, 2007 |
|---|---|---|
| Generation | Radeon R500 PCIe | GeForce 8 |
| 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 | 10 in our database |
| Predecessor | Radeon R400 PCIe | GeForce 7 PCIe |
| Successor | Radeon R600 | GeForce 9 |
Clocks
| GPU clock | 600 MHz | 459 MHz |
|---|---|---|
| Memory clock | 700 MHz 1400 Mbps effective | 400 MHz 800 Mbps effective |
| Shader clock | — | 918 MHz |
Memory Configuration
| Memory size | 512 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | DDR2 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 44.80 GB/s | 6.400 GB/s |
Render Configuration
| Pixel shaders | 16 | — |
|---|---|---|
| Vertex shaders | 8 | — |
| TMUs | 16 | 8 |
| ROPs | 16 | 4 |
| Shading units | — | 16 |
| SM count | — | 2 |
| Cache L2 | — | 16 KB |
Performance
| Pixel rate | 9.600 GPixel/s | 1.836 GPixel/s |
|---|---|---|
| Vertex rate | 1.200 GVertices/s | — |
| Texture rate | 9.600 GTexel/s | 3.672 GTexel/s |
| FP32 (float) performance | — | 29.38 GFLOPS |
Dimensions & Outputs
| Slot width | Dual-slot | Single-slot |
|---|---|---|
| TDP | 113 W | 40 W |
| Suggested PSU | 300 W | 200 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x VGA1x S-Video |
| Power connectors | 1x 6-pin | None |
| Board number | A520 | P403, P413 |
| Length | — | 170 mm 6.7 inches |
API Support & Features
| DirectX | 9.0c (9_3) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 2.1 | 3.3 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Shader model | 3.0 | 4.0 |
| CUDA | — | 1.1 |
