GPU model | Ellesmere | Amethyst |
---|---|---|
GPU variant | Ellesmere XT | Amethyst XT |
Architecture | GCN 4.0 | GCN 3.0 |
Foundry | GlobalFoundries | TSMC |
Manufacturing process | 14 nm | 28 nm |
Number of transistors | 5,700 million | 5,000 million |
Die size | 232 mm² | 366 mm² |
Release date | Dec 12th, 2016 | — |
---|---|---|
Generation | Radeon Instinct | — |
Production | Active | — |
Interface | PCIe 3.0 x16 | — |
Base clock | 1120 MHz | — |
---|---|---|
Boost clock | 1233 MHz | — |
Memory clock | 1750 MHz 7 Gbps effective | 1362 MHz 5.4 Gbps effective |
GPU clock | — | 850 MHz |
Memory size | 8 GB | 4 GB |
---|---|---|
Memory type | GDDR5 | GDDR5 |
Memory bus width | 256 bit | 256 bit |
Bandwidth | 224.0 GB/s | 174.3 GB/s |
Shading units | 2304 | 2048 |
---|---|---|
TMUs | 144 | 128 |
ROPs | 32 | 32 |
Compute units | 36 | 32 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 2 MB | 512 KB |
Pixel rate | 39.46 GPixel/s | 27.20 GPixel/s |
---|---|---|
Texture rate | 177.6 GTexel/s | 108.8 GTexel/s |
FP16 (half) performance | 5.682 TFLOPS (1:1) | 3.482 TFLOPS (1:1) |
FP32 (float) performance | 5.682 TFLOPS | 3.482 TFLOPS |
FP64 (double) performance | 355.1 GFLOPS (1:16) | 217.6 GFLOPS (1:16) |
Slot width | Single-slot | MXM Module |
---|---|---|
Length | 241 mm 9.5 inches | — |
Width | 111 mm 4.4 inches | — |
TDP | 150 W | 250 W |
Suggested PSU | 450 W | — |
Outputs | No outputs | No outputs |
Power connectors | 1x 6-pin | — |
Board number | D122 | — |
DirectX | 12 (12_0) | 12 (12_0) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 2.0 |
Vulkan | 1.2 | 1.2 |
Shader model | 6.4 | 6.3 |
Release date | — | Nov 23rd, 2014 |
---|---|---|
Generation | — | Crystal System (R9 M200) |
Production | — | End-of-life |
Interface | — | MXM-B (3.0) |
Predecessor | — | Solar System |
Successor | — | Mobility Radeon |