ATI Radeon HD 4570 Rebrand vs ATI Radeon HD 5450
Graphics Processor
| GPU model | RV635 | Cedar |
|---|---|---|
| GPU variant | RV635 PRO (215-0682008) | Cedar PRO |
| Architecture | TeraScale | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 40 nm |
| Number of transistors | 378 million | 292 million |
| Die size | 135 mm² | 59 mm² |
Graphics Card
| Release date | Nov 22nd, 2009 | Feb 4th, 2010 |
|---|---|---|
| Generation | Radeon R700 | Evergreen |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Predecessor | Radeon R600 | Radeon R700 |
| Successor | Evergreen | Northern Islands |
| Reviews | — | 34 in our database |
Clocks
| GPU clock | 796 MHz | 650 MHz |
|---|---|---|
| Memory clock | 396 MHz 792 Mbps effective | 400 MHz 800 Mbps effective |
Memory Configuration
| Memory size | 1024 MB | 512 MB |
|---|---|---|
| Memory type | DDR2 | DDR2 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 12.67 GB/s | 6.400 GB/s |
Render Configuration
| Shading units | 120 | 80 |
|---|---|---|
| TMUs | 8 | 8 |
| ROPs | 4 | 4 |
| Compute units | 3 | 2 |
| Cache L2 | 128 KB | 128 KB |
| Cache L1 | — | 8 KB (per CU) |
Performance
| Pixel rate | 3.184 GPixel/s | 2.600 GPixel/s |
|---|---|---|
| Texture rate | 6.368 GTexel/s | 5.200 GTexel/s |
| FP32 (float) performance | 191.0 GFLOPS | 104.0 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 190 mm 7.5 inches | 170 mm 6.7 inches |
| TDP | 65 W | 19 W |
| Suggested PSU | 250 W | 200 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x HDMI1x VGA |
| Power connectors | — | None |
| Board number | — | B750, B982, C026, C027, C028, C070, C093, C096, C267 |
API Support & Features
| DirectX | 10.1 (10_1) | 11.2 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.4 |
| OpenCL | — | 1.2 |
| Vulkan | — | — |
| Shader model | 4.1 | 5.0 |
