GPU model | Baffin | Polaris 21 |
---|---|---|
GPU variant | Baffin XT | Polaris 21 XT (215-0908004) |
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 | Oct 30th, 2016 | Apr 18th, 2017 |
---|---|---|
Generation | Radeon Pro Mac (400 Series) | Radeon Pro Mac (500 Series) |
Production | Active | Active |
Interface | PCIe 3.0 x8 | PCIe 3.0 x8 |
Base clock | 850 MHz | — |
---|---|---|
Boost clock | 907 MHz | — |
Memory clock | 1270 MHz 5.1 Gbps effective | 1270 MHz 5.1 Gbps effective |
GPU clock | — | 907 MHz |
Memory size | 4 GB | 4 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 128 bit |
Bandwidth | 81.28 GB/s | 81.28 GB/s |
Shading units | 1024 | 1024 |
---|---|---|
TMUs | 64 | 64 |
ROPs | 16 | 16 |
Compute units | 16 | 16 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 1024 KB | 1024 KB |
Pixel rate | 14.51 GPixel/s | 14.51 GPixel/s |
---|---|---|
Texture rate | 58.05 GTexel/s | 58.05 GTexel/s |
FP16 (half) performance | 1.858 TFLOPS (1:1) | 1.858 TFLOPS (1:1) |
FP32 (float) performance | 1.858 TFLOPS | 1.858 TFLOPS |
FP64 (double) performance | 116.1 GFLOPS (1:16) | 116.1 GFLOPS (1:16) |
Slot width | IGP | IGP |
---|---|---|
TDP | 35 W | 75 W |
Outputs | No outputs | No outputs |
Power connectors | None | None |
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 |