GPU model | Polaris 21 | GM204 |
---|---|---|
GPU variant | Polaris 21 XT (215-0908004) | — |
Architecture | GCN 4.0 | Maxwell 2.0 |
Foundry | GlobalFoundries | TSMC |
Manufacturing process | 14 nm | 28 nm |
Number of transistors | 3,000 million | 5,200 million |
Die size | 123 mm² | 398 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 | 1253 MHz 5 Gbps effective |
Base clock | — | 557 MHz |
Boost clock | — | 1178 MHz |
Memory size | 4 GB | 4 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 128 bit | 256 bit |
Bandwidth | 94.08 GB/s | 160.4 GB/s |
Shading units | 1024 | 2048 |
---|---|---|
TMUs | 64 | 128 |
ROPs | 16 | 64 |
Compute units | 16 | — |
Cache L1 | 16 KB (per CU) | 48 KB (per SMM) |
Cache L2 | 1024 KB | 2 MB |
SMM count | — | 16 |
Pixel rate | 16.06 GPixel/s | 75.39 GPixel/s |
---|---|---|
Texture rate | 64.26 GTexel/s | 150.8 GTexel/s |
FP16 (half) performance | 2.056 TFLOPS (1:1) | — |
FP32 (float) performance | 2.056 TFLOPS | 4.825 TFLOPS |
FP64 (double) performance | 128.5 GFLOPS (1:16) | 150.8 GFLOPS (1:32) |
Slot width | IGP | Dual-slot |
---|---|---|
TDP | 75 W | 225 W |
Outputs | No outputs | No outputs |
Power connectors | None | 1x 8-pin |
Length | — | 267 mm 10.5 inches |
Suggested PSU | — | 550 W |
DirectX | 12 (12_0) | 12 (12_1) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 3.0 |
Vulkan | 1.2 | 1.1 |
Shader model | 6.4 | 6.4 |
CUDA | — | 5.2 |
Release date | — | Aug 30th, 2015 |
---|---|---|
Generation | — | GRID |
Production | — | End-of-life |
Interface | — | PCIe 3.0 x16 |