GPU model | Polaris 21 | Polaris 21 |
---|---|---|
GPU variant | Polaris 21 XL | Polaris 21M XT |
Architecture | GCN 4.0 | GCN 4.0 |
Foundry | GlobalFoundries | GlobalFoundries |
Manufacturing process | 14 nm | 14 nm |
Number of transistors | 3,000 million | 3,000 million |
Die size | 123 mm² | 123 mm² |
Release date | Jul 4th, 2017 | — |
---|---|---|
Generation | Polaris | — |
Production | Active | — |
Interface | PCIe 3.0 x8 | — |
Predecessor | Arctic Islands | — |
Successor | Vega | — |
Base clock | 1090 MHz | — |
---|---|---|
Boost clock | 1175 MHz | — |
Memory clock | 1750 MHz 7 Gbps effective | 1450 MHz 5.8 Gbps effective |
GPU clock | — | 1275 MHz |
Memory size | 4 GB | 4 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 128 bit |
Bandwidth | 112.0 GB/s | 92.80 GB/s |
Shading units | 896 | 1024 |
---|---|---|
TMUs | 56 | 64 |
ROPs | 16 | 16 |
Compute units | 14 | 16 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 1024 KB | 1024 KB |
Pixel rate | 18.80 GPixel/s | 20.40 GPixel/s |
---|---|---|
Texture rate | 65.80 GTexel/s | 81.60 GTexel/s |
FP16 (half) performance | 2.106 TFLOPS (1:1) | 2.611 TFLOPS (1:1) |
FP32 (float) performance | 2.106 TFLOPS | 2.611 TFLOPS |
FP64 (double) performance | 131.6 GFLOPS (1:16) | 163.2 GFLOPS (1:16) |
Slot width | Dual-slot | MXM Module |
---|---|---|
Length | 170 mm 6.7 inches | — |
TDP | 45 W | 65 W |
Suggested PSU | 200 W | — |
Outputs | 1x DVI1x HDMI1x DisplayPort | No outputs |
Power connectors | None | None |
Board number | C981-21 C994-71 | — |
DirectX | 12 (12_0) | 12 (12_0) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 2.1 |
Vulkan | 1.2 | 1.2 |
Shader model | 6.4 | 6.4 |
Release date | — | Apr 11th, 2018 |
---|---|---|
Generation | — | Mobility Radeon (RX M500X) |
Production | — | Active |
Interface | — | MXM-B (3.0) |
Predecessor | — | Crystal System |