GPU model | Polaris 21 | Polaris 21 |
---|---|---|
GPU variant | Polaris 21 XT (215-0908004) | Polaris 21 XL |
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 16th, 2018 | — |
---|---|---|
Generation | Radeon Pro Mac (500X Series) | — |
Production | Active | — |
Interface | PCIe 3.0 x8 | — |
GPU clock | 1004 MHz | — |
---|---|---|
Memory clock | 1470 MHz 5.9 Gbps effective | 1750 MHz 7 Gbps effective |
Base clock | — | 1090 MHz |
Boost clock | — | 1175 MHz |
Memory size | 4 GB | 4 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 128 bit |
Bandwidth | 94.08 GB/s | 112.0 GB/s |
Shading units | 1024 | 896 |
---|---|---|
TMUs | 64 | 56 |
ROPs | 16 | 16 |
Compute units | 16 | 14 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 1024 KB | 1024 KB |
Pixel rate | 16.06 GPixel/s | 18.80 GPixel/s |
---|---|---|
Texture rate | 64.26 GTexel/s | 65.80 GTexel/s |
FP16 (half) performance | 2.056 TFLOPS (1:1) | 2.106 TFLOPS (1:1) |
FP32 (float) performance | 2.056 TFLOPS | 2.106 TFLOPS |
FP64 (double) performance | 128.5 GFLOPS (1:16) | 131.6 GFLOPS (1:16) |
Slot width | IGP | Dual-slot |
---|---|---|
TDP | 75 W | 45 W |
Outputs | No outputs | 1x DVI1x HDMI1x DisplayPort |
Power connectors | None | None |
Length | — | 170 mm 6.7 inches |
Suggested PSU | — | 200 W |
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 | — | Jul 4th, 2017 |
---|---|---|
Generation | — | Polaris |
Production | — | Active |
Interface | — | PCIe 3.0 x8 |
Predecessor | — | Arctic Islands |
Successor | — | Vega |