Radeon RX 640 (Polaris 23)
AMD
Catalog context
Within its series, the Radeon RX 640 (Polaris 23) ranks 28th of 36 for FP32 throughput and 79th of 90 for memory capacity. Its 50 W TDP is within the 75 W PCIe slot-power ceiling. The source does not record generation, codename, transistors and sm count, or 5 further fields, for this variant.
| Launch date | August 13, 2019 |
|---|---|
| Series | Radeon RX |
| Generation | — |
| Codename | — |
| Form factor | mobile |
| Architecture | GCN 4 |
| Process | 14 nm |
| Transistors | — |
| Die size | 103 mm² |
| Shaders | 512 |
| TMUs | 40 |
| ROPs | 16 |
| SM count | — |
| Base clock | — |
| Boost clock | — |
| Memory clock | — |
| Memory | 2 GB |
| Memory type | GDDR5 |
| Bus width | 64 bit |
| Bandwidth | 56 GB/s |
| Pixel fill rate | 17.31 GP/s |
| Texture fill rate | 43.28 GT/s |
| FP32 | 1,385 GFLOPS |
| FP64 | 86.56 GFLOPS |
| TDP | 50 W |
| Bus interface | PCIe 3.0 ×8 |
| External power required | — |
| Launch MSRP | — |
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Source: Wikipedia, revision 1364362273 · catalog loaded 2026-08-16