ATI Radeon HD 3650 vs NVIDIA GeForce 6800 GT
Graphics Processor
| GPU model | RV635 | NV40 |
|---|---|---|
| GPU variant | RV635 PRO (215-0682008) | 6800 GT |
| Architecture | TeraScale | Curie |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 130 nm |
| Number of transistors | 378 million | 222 million |
| Die size | 135 mm² | 287 mm² |
Graphics Card
| Release date | Jan 20th, 2008 | Apr 14th, 2004 |
|---|---|---|
| Generation | Radeon R600 | GeForce 6 AGP |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | AGP 8x |
| Reviews | 28 in our database | 115 in our database |
| Predecessor | Radeon R500 PCIe | GeForce FX |
| Successor | Radeon R700 | GeForce 7 AGP |
Clocks
| GPU clock | 725 MHz | 350 MHz |
|---|---|---|
| Memory clock | 800 MHz 1600 Mbps effective | 250 MHz 500 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 128 MB |
|---|---|---|
| Memory type | GDDR3 | DDR |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 25.60 GB/s | 16.00 GB/s |
Render Configuration
| Shading units | 120 | — |
|---|---|---|
| TMUs | 8 | 16 |
| ROPs | 4 | 16 |
| Compute units | 3 | — |
| Cache L2 | 128 KB | — |
| Pixel shaders | — | 16 |
| Vertex shaders | — | 6 |
Performance
| Pixel rate | 2.900 GPixel/s | 5.600 GPixel/s |
|---|---|---|
| Texture rate | 5.800 GTexel/s | 5.600 GTexel/s |
| FP32 (float) performance | 174.0 GFLOPS | — |
| Vertex rate | — | 525.0 MVertices/s |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| TDP | 65 W | unknown |
| Suggested PSU | 250 W | 200 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x VGA1x S-Video |
| Power connectors | None | 1x Molex |
| Board number | B381 | P201, 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 |
