ATI Radeon HD 3650 vs ATI Radeon X800 CrossFire Edition
Graphics Processor
| GPU model | RV635 | R423 |
|---|---|---|
| GPU variant | RV635 PRO (215-0682008) | — |
| Architecture | TeraScale | R400 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 130 nm |
| Number of transistors | 378 million | 160 million |
| Die size | 135 mm² | 289 mm² |
Graphics Card
| Release date | Jan 20th, 2008 | Oct 28th, 2005 |
|---|---|---|
| Generation | Radeon R600 | Radeon R400 PCIe |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 1.0 x16 |
| Reviews | 28 in our database | 226 in our database |
| Predecessor | Radeon R500 PCIe | Radeon R300 |
| Successor | Radeon R700 | Radeon R500 PCIe |
Clocks
| GPU clock | 725 MHz | 500 MHz |
|---|---|---|
| Memory clock | 800 MHz 1600 Mbps effective | 500 MHz 1000 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR3 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 25.60 GB/s | 32.00 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 | 8.000 GPixel/s |
|---|---|---|
| Texture rate | 5.800 GTexel/s | 8.000 GTexel/s |
| FP32 (float) performance | 174.0 GFLOPS | — |
| Vertex rate | — | 750.0 MVertices/s |
Dimensions & Outputs
| Slot width | Single-slot | Dual-slot |
|---|---|---|
| TDP | 65 W | unknown |
| Suggested PSU | 250 W | 200 W |
| Outputs | 2x DVI1x S-Video | 2x DVI |
| Power connectors | None | None |
| Board number | B381 | — |
API Support & Features
| DirectX | 10.1 (10_1) | 9.0b (9_2) |
|---|---|---|
| OpenGL | 3.3 | 2.1 |
| OpenCL | — | — |
| Vulkan | — | — |
| Shader model | 4.1 | — |
| Pixel shader | — | 2.0b |
| Vertex shader | — | 2.0b |
