ATI Radeon HD 4250 vs NVIDIA GeForce 6800 XT
Graphics Processor
| GPU model | RV620 | NV40 |
|---|---|---|
| GPU variant | RV620 LE | — |
| Architecture | TeraScale | Curie |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 130 nm |
| Number of transistors | 181 million | 222 million |
| Die size | 67 mm² | 287 mm² |
Graphics Card
| Release date | Feb 25th, 2009 | Sep 30th, 2005 |
|---|---|---|
| Generation | Radeon R600 | GeForce 6 AGP |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | AGP 8x |
| Predecessor | Radeon R500 PCIe | GeForce FX |
| Successor | Radeon R700 | GeForce 7 AGP |
| Reviews | — | 115 in our database |
Clocks
| GPU clock | 594 MHz | 300 MHz |
|---|---|---|
| Memory clock | 396 MHz 792 Mbps effective | 350 MHz 700 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 256 MB |
|---|---|---|
| Memory type | DDR2 | DDR |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 6.336 GB/s | 22.40 GB/s |
Render Configuration
| Shading units | 40 | — |
|---|---|---|
| TMUs | 4 | 8 |
| ROPs | 4 | 8 |
| Compute units | 2 | — |
| Cache L2 | 64 KB | — |
| Pixel shaders | — | 8 |
| Vertex shaders | — | 4 |
Performance
| Pixel rate | 2.376 GPixel/s | 2.400 GPixel/s |
|---|---|---|
| Texture rate | 2.376 GTexel/s | 2.400 GTexel/s |
| FP32 (float) performance | 47.52 GFLOPS | — |
| Vertex rate | — | 300.0 MVertices/s |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| TDP | 25 W | unknown |
| Suggested PSU | 200 W | 200 W |
| Outputs | 1x DVI1x VGA1x S-Video | 1x DVI1x VGA1x S-Video |
| Power connectors | None | 1x Molex |
| Board number | — | P212 |
API Support & Features
| DirectX | 10.1 (10_1) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 3.3 | 2.1 |
| OpenCL | — | — |
| Vulkan | — | — |
| Shader model | 4.1 | 3.0 |
