Nom du GPU | Polaris 21 | Tobago |
---|---|---|
GPU variant | Polaris 21 PRO | Tobago XT |
Architecture | GCN 4.0 | GCN 2.0 |
Fonderie | GlobalFoundries | TSMC |
Taille du processus | 14 nm | 28 nm |
Transistors | 3,000 million | 2,080 million |
Taille des matrices | 123 mm² | 160 mm² |
Date de publication | Jun 5th, 2017 | — |
---|---|---|
Génération | Radeon Pro Mac (500 Series) | — |
Production | Active | — |
Bus interface | PCIe 3.0 x8 | — |
GPU clock | 850 MHz | 1100 MHz |
---|---|---|
Mémoire clock | 1275 MHz 5.1 Gbps effective | 1500 MHz 6 Gbps effective |
Taille de la mémoire | 2 GB | 2 GB |
---|---|---|
Type de mémoire | GDDR5 | GDDR5 |
Bus mémoire | 128 bit | 128 bit |
Bande passante | 81.60 GB/s | 96.00 GB/s |
Shading units | 768 | 896 |
---|---|---|
TMUs | 48 | 56 |
ROPs | 16 | 16 |
Compute units | 12 | 14 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 1024 KB | 256 KB |
Taux de pixel | 13.60 GPixel/s | 17.60 GPixel/s |
---|---|---|
Taux de texture | 40.80 GTexel/s | 61.60 GTexel/s |
FP16 (half) performance | 1,306 GFLOPS (1:1) | — |
FP32 (float) performance | 1,306 GFLOPS | 1.971 TFLOPS |
FP64 (double) performance | 81.60 GFLOPS (1:16) | 123.2 GFLOPS (1:16) |
Taille Slot | IGP | Dual-slot |
---|---|---|
TDP | 75 W | 85 W |
Sorties | No outputs | 2x DVI1x HDMI1x DisplayPort |
Connecteurs de puissance | None | 1x 6-pin |
Longueur | — | 183 mm 7.2 inches |
Suggestions pour le PSU | — | 250 W |
Board number | — | C582 |
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 |
Date de publication | — | Jun 18th, 2015 |
---|---|---|
Génération | — | Pirate Islands |
Production | — | End-of-life |
Bus interface | — | PCIe 3.0 x16 |
Prédécesseur | — | Volcanic Islands |
Successeur | — | Arctic Islands |