AMD · GCN 4 · 2019
Radeon RX 640 (Polaris 23)
Radeon RX 640 (Polaris 23): 2 GB GDDR5, 50 W, 512 Stream processors. Launched August 13, 2019.
- Memory
- 2 GB
- Power
- 50 W
- Bus width
- 64 bit
Memory2 GB
85 of 96 in Radeon RX
Power50 W
87 of 96 by higher draw in Radeon RX
Stream processors512
75 of 78 in Radeon RX
Current market
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Specifications
Memory
- Capacity
- 2 GB
- Memory type
- GDDR5
- Bus width
- 64 bit
- Bandwidth
- 56 GB/s
Compute
- Stream processors
- 512
- TMUs
- 40
- ROPs
- 16
- FP32
- 1,385 GFLOPS
- FP64
- 86.56 GFLOPS
- Pixel fill rate
- 17.31 GP/s
- Texture fill rate
- 43.28 GT/s
Board
- TDP
- 50 W
- Bus interface
- PCIe 3.0 ×8
- Form factor
- mobile
Physical
- Architecture
- GCN 4
- Process
- 14 nm
- Die size
- 103 mm²
- Series
- Radeon RX
- Launch date
- August 13, 2019
Not recorded by the source: generation, codename, transistors and sm count, or 5 further fields.
Die figure
Silicon, made visible
Die area is drawn against the largest recorded die in the catalog. Shader dots use a labeled, card-specific ratio so both early and modern GPUs remain legible.
Catalog context
Within its series, the Radeon RX 640 (Polaris 23) ranks 35th of 44 for FP32 throughput and 85th of 96 for memory capacity. Its 50 W TDP is within the 75 W PCIe slot-power ceiling.
Source: Wikipedia, revision 1364362273 · catalog loaded 2026-08-16