GPU model | Navi 14 | Polaris 21 |
---|---|---|
GPU variant | Navi 14 PROA | Polaris 21 XT (215-0908004) |
Architecture | RDNA 1.0 | GCN 4.0 |
Foundry | TSMC | GlobalFoundries |
Manufacturing process | 7 nm | 14 nm |
Number of transistors | 6,400 million | 3,000 million |
Die size | 158 mm² | 123 mm² |
Release date | Nov 13th, 2019 | Apr 18th, 2017 |
---|---|---|
Generation | Radeon Pro Mac (Navi Mobile) | Radeon Pro Mac (500 Series) |
Production | Active | Active |
Interface | PCIe 4.0 x8 | PCIe 3.0 x8 |
Base clock | 1000 MHz | — |
---|---|---|
Boost clock | 1250 MHz | — |
Memory clock | 1500 MHz 12 Gbps effective | 1270 MHz 5.1 Gbps effective |
GPU clock | — | 907 MHz |
Memory size | 4 GB | 4 GB |
---|---|---|
Memory type | GDDR6 | GDDR5 |
Memory bus width | 128 bit | 128 bit |
Bandwidth | 192.0 GB/s | 81.28 GB/s |
Shading units | 1280 | 1024 |
---|---|---|
TMUs | 80 | 64 |
ROPs | 32 | 16 |
Compute units | 20 | 16 |
Cache L2 | 2 MB | 1024 KB |
Cache L1 | — | 16 KB (per CU) |
Pixel rate | 40.00 GPixel/s | 14.51 GPixel/s |
---|---|---|
Texture rate | 100.0 GTexel/s | 58.05 GTexel/s |
FP16 (half) performance | 6.400 TFLOPS (2:1) | 1.858 TFLOPS (1:1) |
FP32 (float) performance | 3.200 TFLOPS | 1.858 TFLOPS |
FP64 (double) performance | 200.0 GFLOPS (1:16) | 116.1 GFLOPS (1:16) |
TDP | 85 W | 75 W |
---|---|---|
Outputs | No outputs | No outputs |
Power connectors | None | None |
Slot width | — | IGP |
DirectX | 12 (12_1) | 12 (12_0) |
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OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 2.1 |
Vulkan | 1.2 | 1.2 |
Shader model | 6.5 | 6.4 |