ATI Radeon X1900 G5 Mac Edition vs NVIDIA GeForce 6800 GT Dual
Graphics Processor
| GPU model | R580 | NV45 |
|---|---|---|
| GPU variant | R580 XL (215BAEBKA31FG) | — |
| Architecture | R500 | Curie |
| Foundry | TSMC | TSMC |
| Manufacturing process | 90 nm | 130 nm |
| Number of transistors | 384 million | 222 million |
| Die size | 352 mm² | 287 mm² |
Graphics Card
| Release date | Nov 6th, 2006 | Jun 8th, 2004 |
|---|---|---|
| Generation | Radeon R500 PCIe | GeForce 6 PCIe |
| Production | End-of-life | End-of-life |
| Launch price | 349 USD | — |
| Interface | PCIe 1.0 x16 | PCIe 1.0 x16 |
| Reviews | 115 in our database | 115 in our database |
| Predecessor | Radeon R400 PCIe | GeForce PCX |
| Successor | Radeon R600 | GeForce 7 PCIe |
Clocks
| GPU clock | 575 MHz | 350 MHz |
|---|---|---|
| Memory clock | 600 MHz 1200 Mbps effective | 500 MHz 1000 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR3 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 38.40 GB/s | 32.00 GB/s |
Render Configuration
| Pixel shaders | 36 | 16 |
|---|---|---|
| Vertex shaders | 8 | 6 |
| TMUs | 12 | 16 |
| ROPs | 12 | 16 |
Performance
| Pixel rate | 6.900 GPixel/s | 5.600 GPixel/s |
|---|---|---|
| Vertex rate | 1.150 GVertices/s | 525.0 MVertices/s |
| Texture rate | 6.900 GTexel/s | 5.600 GTexel/s |
Dimensions & Outputs
| Slot width | Single-slot | Dual-slot |
|---|---|---|
| TDP | 75 W | unknown |
| Suggested PSU | 250 W | 200 W |
| Outputs | 2x DVI1x S-Video | 2x DVI1x S-Video |
| Power connectors | 1x 6-pin | 1x 6-pin |
API Support & Features
| DirectX | 9.0c (9_3) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 2.1 (full) 3.0 (partial) | 2.1 |
| OpenCL | — | — |
| Vulkan | — | — |
| Shader model | 3.0 | 3.0 |
