ATI Radeon HD 2600 XT Mac Edition vs ATI Radeon HD 3450
Graphics Processor
| GPU model | RV630 | RV620 |
|---|---|---|
| Architecture | TeraScale | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 65 nm | 55 nm |
| Number of transistors | 390 million | 181 million |
| Die size | 153 mm² | 67 mm² |
| GPU variant | — | RV620 LE |
Graphics Card
| Release date | Feb 21st, 2008 | Dec 10th, 2007 |
|---|---|---|
| Generation | Radeon R600 | Radeon R600 |
| Production | End-of-life | End-of-life |
| Interface | PCIe 1.0 x16 | PCIe 2.0 x16 |
| Reviews | 82 in our database | 7 in our database |
| Predecessor | Radeon R500 PCIe | Radeon R500 PCIe |
| Successor | Radeon R700 | Radeon R700 |
Clocks
| GPU clock | 700 MHz | 600 MHz |
|---|---|---|
| Memory clock | 800 MHz 1600 Mbps effective | 500 MHz 1000 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | DDR2 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 25.60 GB/s | 8.000 GB/s |
Render Configuration
| Shading units | 120 | 40 |
|---|---|---|
| TMUs | 8 | 4 |
| ROPs | 4 | 4 |
| Compute units | 3 | 2 |
| Cache L2 | 64 KB | 64 KB |
Performance
| Pixel rate | 2.800 GPixel/s | 2.400 GPixel/s |
|---|---|---|
| Texture rate | 5.600 GTexel/s | 2.400 GTexel/s |
| FP32 (float) performance | 168.0 GFLOPS | 48.00 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| TDP | 45 W | 25 W |
| Suggested PSU | 200 W | 200 W |
| Outputs | 2x DVI | 1x DVI1x VGA1x S-Video |
| Power connectors | None | None |
| Board number | B148 | B629 |
API Support & Features
| DirectX | 10.0 (10_0) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 3.3 | 3.3 |
| OpenCL | — | — |
| Vulkan | — | — |
| Shader model | 4.0 | 4.1 |
