Radeon HD 8870 OEM
| Manufacturer: | AMD |
| Series: | HD 8xxx (Sea Islands) |
| Codename: | Pitcairn XT |
| Architecture: | GCN 1 |
| Release date: | 2013. January 08. |
| Die count: | 1 |
| Die size: | 212 mm2 |
| Fab: | 28 nm |
| Transistors: | 2800 millions |
| Bus interface: | PCI-E 3.0 x16 |
Clock rates
| Core clock: | 1000 MHz |
| Memory clock: | 1200 MHz |
| Effective memory clock (DDR): | 9600 MHz |
Memory
| Memory size: | 2048 MB |
| Memory bus type: | GDDR5 |
| Memory bus width: | 256 bit |
| Memory bandwidth (maximum): | 153.6 GB/s |
Core units
| Unified shader units: | 1280 |
| Texture mapping units (TMU): | 80 |
| Render output units (ROP): | 32 |
| Compute units: | 20 |
Supported Technologies:
| DirectX: | 12 |
| OpenGL: | 4.5 |
| OpenCL: | 1.2 |
Performance
| Pixel fillrate: | 32 (GP/s) |
| Texture fillrate: | 80 (GT/s) |
| Thermal Design Power (TDP,Max): | 175 W |
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