ATI Radeon X1900 G5 Mac Edition vs NVIDIA GeForce 8400 GS Rev. 3
Graphics Processor
| GPU model | R580 | GT218 |
|---|---|---|
| GPU variant | R580 XL (215BAEBKA31FG) | 8400GS-225-B1 |
| Architecture | R500 | Tesla 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 90 nm | 40 nm |
| Number of transistors | 384 million | 260 million |
| Die size | 352 mm² | 57 mm² |
Graphics Card
| Release date | Nov 6th, 2006 | Jul 12th, 2010 |
|---|---|---|
| Generation | Radeon R500 PCIe | GeForce 8 |
| Production | End-of-life | End-of-life |
| Launch price | 349 USD | — |
| Interface | PCIe 1.0 x16 | PCIe 2.0 x16 |
| Reviews | 115 in our database | 10 in our database |
| Predecessor | Radeon R400 PCIe | GeForce 7 PCIe |
| Successor | Radeon R600 | GeForce 9 |
Clocks
| GPU clock | 575 MHz | 520 MHz |
|---|---|---|
| Memory clock | 600 MHz 1200 Mbps effective | 400 MHz 800 Mbps effective |
| Shader clock | — | 1230 MHz |
Memory Configuration
| Memory size | 256 MB | 512 MB |
|---|---|---|
| Memory type | GDDR3 | DDR2 |
| Memory bus width | 256 bit | 64 bit |
| Bandwidth | 38.40 GB/s | 6.400 GB/s |
Render Configuration
| Pixel shaders | 36 | — |
|---|---|---|
| Vertex shaders | 8 | — |
| TMUs | 12 | 4 |
| ROPs | 12 | 4 |
| Shading units | — | 8 |
| SM count | — | 1 |
| Cache L2 | — | 32 KB |
Performance
| Pixel rate | 6.900 GPixel/s | 2.080 GPixel/s |
|---|---|---|
| Vertex rate | 1.150 GVertices/s | — |
| Texture rate | 6.900 GTexel/s | 2.080 GTexel/s |
| FP32 (float) performance | — | 19.68 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| TDP | 75 W | 25 W |
| Suggested PSU | 250 W | 200 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x VGA1x S-Video |
| Power connectors | 1x 6-pin | None |
| Length | — | 170 mm 6.7 inches |
| Board number | — | P873 |
API Support & Features
| DirectX | 9.0c (9_3) | 11.1 (10_1) |
|---|---|---|
| OpenGL | 2.1 (full) 3.0 (partial) | 3.3 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Shader model | 3.0 | 4.1 |
| CUDA | — | 1.2 |
