GPU model | Polaris 20 | Rage 4 |
---|---|---|
GPU variant | Polaris 20 XTR (215-0910066) | 215R4GAUC21 |
Architecture | GCN 4.0 | Rage 4 |
Foundry | GlobalFoundries | TSMC |
Manufacturing process | 14 nm | 250 nm |
Number of transistors | 5,700 million | 8 million |
Die size | 232 mm² | 89 mm² |
Release date | Mar 9th, 2020 | Oct 1st, 1999 |
---|---|---|
Generation | Polaris | Rage 4 |
Production | Active | End-of-life |
Interface | PCIe 3.0 x16 | AGP 4x |
Predecessor | Arctic Islands | Rage 3 |
Successor | Vega | Rage 6 |
Base clock | 1257 MHz | — |
---|---|---|
Boost clock | 1380 MHz | — |
Memory clock | 2000 MHz 8 Gbps effective | 143 MHz |
GPU clock | — | 125 MHz |
Memory size | 8 GB | 32 MB |
---|---|---|
Memory type | GDDR5 | SDR |
Memory bus width | 256 bit | 128 bit |
Bandwidth | 256.0 GB/s | 2.288 GB/s |
Shading units | 2304 | — |
---|---|---|
TMUs | 144 | 2 |
ROPs | 32 | 2 |
Compute units | 36 | — |
Cache L1 | 16 KB (per CU) | — |
Cache L2 | 2 MB | — |
Pixel shaders | — | 2 |
Vertex shaders | — | 0 |
Pixel rate | 44.16 GPixel/s | 250.0 MPixel/s |
---|---|---|
Texture rate | 198.7 GTexel/s | 250.0 MTexel/s |
FP16 (half) performance | 6.359 TFLOPS (1:1) | — |
FP32 (float) performance | 6.359 TFLOPS | — |
FP64 (double) performance | 397.4 GFLOPS (1:16) | — |
Slot width | Dual-slot | Single-slot |
---|---|---|
Length | 241 mm 9.5 inches | — |
TDP | 175 W | unknown |
Suggested PSU | 450 W | 200 W |
Outputs | 1x HDMI3x DisplayPort | 1x VGA |
Power connectors | 1x 8-pin | None |
Board number | C940 | 673 |
DirectX | 12 (12_0) | 6.0 |
---|---|---|
OpenGL | 4.6 | 1.2 |
OpenCL | 2.1 | — |
Vulkan | 1.2 | — |
Shader model | 6.4 | — |
Pixel shader | — | — |
Vertex shader | — | — |