GPU model | Polaris 21 | GK104 |
---|---|---|
GPU variant | Polaris 21 XT (215-0908004) | — |
Architecture | GCN 4.0 | Kepler |
Foundry | GlobalFoundries | TSMC |
Manufacturing process | 14 nm | 28 nm |
Number of transistors | 3,000 million | 3,540 million |
Die size | 123 mm² | 294 mm² |
Release date | Apr 18th, 2017 | — |
---|---|---|
Generation | Radeon Pro Mac (500 Series) | — |
Production | Active | — |
Interface | PCIe 3.0 x8 | — |
GPU clock | 907 MHz | 745 MHz |
---|---|---|
Memory clock | 1270 MHz 5.1 Gbps effective | 1250 MHz 5 Gbps effective |
Memory size | 4 GB | 256 MB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 256 bit |
Bandwidth | 81.28 GB/s | 160.0 GB/s |
Shading units | 1024 | 1536 |
---|---|---|
TMUs | 64 | 128 |
ROPs | 16 | 32 |
Compute units | 16 | — |
Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
Cache L2 | 1024 KB | 512 KB |
SMX count | — | 8 |
Pixel rate | 14.51 GPixel/s | 23.84 GPixel/s |
---|---|---|
Texture rate | 58.05 GTexel/s | 95.36 GTexel/s |
FP16 (half) performance | 1.858 TFLOPS (1:1) | — |
FP32 (float) performance | 1.858 TFLOPS | 2.289 TFLOPS |
FP64 (double) performance | 116.1 GFLOPS (1:16) | 95.36 GFLOPS (1:24) |
Slot width | IGP | IGP |
---|---|---|
TDP | 75 W | 225 W |
Outputs | No outputs | No outputs |
Power connectors | None | — |
Suggested PSU | — | 550 W |
DirectX | 12 (12_0) | 12 (11_0) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 3.0 |
Vulkan | 1.2 | 1.1 |
Shader model | 6.4 | 5.1 |
CUDA | — | 3.0 |
Release date | — | Jun 28th, 2013 |
---|---|---|
Generation | — | GRID |
Production | — | End-of-life |
Launch price | — | 235 USD |
Interface | — | PCIe 3.0 x16 |