Radeon HD 4580
| Manufacturer: | AMD |
| Series: | HD 4xxx (Radeon R700) |
| Codename: | RV635 PRO |
| Release date: | 2011. November 20. |
| Die count: | 1 |
| Die size: | 135 mm2 |
| Fab: | 55 nm |
| Transistors: | 378 millions |
| Bus interface: | PCI-E 2.0 x16 |
Clock rates
| Core clock: | 796 MHz |
| Memory clock: | 693 MHz |
| Effective memory clock (DDR): | 5544 MHz |
Memory
| Memory size: | 512 MB |
| Memory bus type: | GDDR3 |
| Memory bus width: | 128 bit |
| Memory bandwidth (maximum): | 22.2 GB/s |
Core units
| Unified shader units: | 120 |
| Texture mapping units (TMU): | 8 |
| Render output units (ROP): | 4 |
| Compute units: | 3 |
Supported Technologies:
| DirectX: | 10.1 |
| OpenGL: | 3.3 |
| OpenCL: | 1.0 |
Performance
| Pixel fillrate: | 3.18 (GP/s) |
| Texture fillrate: | 6.37 (GT/s) |
| Thermal Design Power (TDP,Max): | 65 W |
| Release price (USD): | 55 USD |
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