Radeon RX 640
| Manufacturer: | AMD |
| Series: | Rx M600 |
| Codename: | Polaris 23 XT |
| Architecture: | GCN 4 |
| Release date: | 2019. May 13. |
| Die count: | 1 |
| Die size: | 103 mm2 |
| Fab: | 14 nm |
| Transistors: | 2200 millions |
| Bus interface: | PCI-E 3.0 x8 |
Clock rates
| Core clock: | 1082 MHz |
| Core clock (Boost): | 1218 MHz |
| Memory clock: | 1500 MHz |
| Effective memory clock (DDR): | 12000 MHz |
Memory
| Memory size: | 2048 MB |
| Memory bus type: | GDDR5 |
| Memory bus width: | 64 bit |
| Memory bandwidth (maximum): | 48 GB/s |
Core units
| Unified shader units: | 640 |
| Texture mapping units (TMU): | 40 |
| Render output units (ROP): | 16 |
| Compute units: | 10 |
Supported Technologies:
| DirectX: | 12 |
| OpenGL: | 4.6 |
| OpenCL: | 2.0 |
Performance
| Pixel fillrate: | 19.49 (GP/s) |
| Texture fillrate: | 48.72 (GT/s) |
| Thermal Design Power (TDP,Max): | 50 W |
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