ATI Radeon X800 XT Mac Edition vs NVIDIA GeForce 8400M GS
Graphics Processor
| GPU model | R423 | G86 |
|---|---|---|
| GPU variant | R423 XT (215RBJAGA12F) | NB8M-GS |
| Architecture | R400 | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 130 nm | 80 nm |
| Number of transistors | 160 million | 210 million |
| Die size | 289 mm² | 127 mm² |
Graphics Card
| Release date | Dec 1st, 2004 | — |
|---|---|---|
| Generation | Radeon R400 AGP | — |
| Production | End-of-life | — |
| Interface | AGP Pro 8x | — |
| Reviews | 226 in our database | — |
| Predecessor | Radeon R300 | — |
| Successor | Radeon R500 AGP | — |
Clocks
| GPU clock | 475 MHz | 400 MHz |
|---|---|---|
| Memory clock | 500 MHz 1000 Mbps effective | 400 MHz 800 Mbps effective |
| Shader clock | — | 800 MHz |
Memory Configuration
| Memory size | 256 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | DDR2 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 32.00 GB/s | 6.400 GB/s |
Render Configuration
| Pixel shaders | 16 | — |
|---|---|---|
| Vertex shaders | 6 | — |
| TMUs | 16 | 8 |
| ROPs | 16 | 4 |
| Shading units | — | 16 |
| SM count | — | 2 |
| Cache L2 | — | 16 KB |
Performance
| Pixel rate | 7.600 GPixel/s | 1.600 GPixel/s |
|---|---|---|
| Vertex rate | 712.5 MVertices/s | — |
| Texture rate | 7.600 GTexel/s | 3.200 GTexel/s |
| FP32 (float) performance | — | 25.60 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | MXM Module |
|---|---|---|
| TDP | 54 W | 11 W |
| Suggested PSU | 250 W | — |
| Outputs | 2x DVI | No outputs |
| Power connectors | None | — |
API Support & Features
| DirectX | 9.0b (9_2) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 2.1 | 3.3 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Pixel shader | 2.0b | — |
| Vertex shader | 2.0b | — |
| CUDA | — | 1.1 |
| Shader model | — | 4.0 |
Other Features
Mobile graphics
| Release date | — | May 9th, 2007 |
|---|---|---|
| Generation | — | GeForce 8M (8000M) |
| Production | — | End-of-life |
| Interface | — | MXM-I |
| Predecessor | — | GeForce Go 7 |
| Successor | — | GeForce 9M |
