AMD Radeon RX 455 OEM vs AMD Radeon RX 560X
Processeur graphique
| Nom du GPU | Tobago | Polaris 21 |
|---|---|---|
| GPU variant | Tobago PRO (215-0875010) | Polaris 21 XT (215-0908004) |
| Architecture | GCN 2.0 | GCN 4.0 |
| Fonderie | TSMC | GlobalFoundries |
| Taille du processus | 28 nm | 14 nm |
| Transistors | 2,080 million | 3,000 million |
| Taille des matrices | 160 mm² | 123 mm² |
Carte graphique
| Date de publication | Jun 30th, 2016 | Apr 11th, 2018 |
|---|---|---|
| Génération | Arctic Islands | Polaris |
| Production | End-of-life | Active |
| Bus interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Prédécesseur | Pirate Islands | Polaris |
| Successeur | Polaris | Vega |
Vitesse clock
| GPU clock | 1050 MHz | — |
|---|---|---|
| Mémoire clock | 1625 MHz 6.5 Gbps effective | 1750 MHz 7 Gbps effective |
| Base clock | — | 1175 MHz |
| Boost clock | — | 1275 MHz |
Mémoire
| Taille de la mémoire | 2 GB | 4 GB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 128 bit | 128 bit |
| Bande passante | 104.0 GB/s | 112.0 GB/s |
Render Config
| Shading units | 768 | 1024 |
|---|---|---|
| TMUs | 48 | 64 |
| ROPs | 16 | 16 |
| Compute units | 12 | 16 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 1024 KB |
Performance théorique
| Taux de pixel | 16.80 GPixel/s | 20.40 GPixel/s |
|---|---|---|
| Taux de texture | 50.40 GTexel/s | 81.60 GTexel/s |
| FP32 (float) performance | 1.613 TFLOPS | 2.611 TFLOPS |
| FP64 (double) performance | 100.8 GFLOPS (1:16) | 163.2 GFLOPS (1:16) |
| FP16 (half) performance | — | 2.611 TFLOPS (1:1) |
Board Design
| Taille Slot | Single-slot | Dual-slot |
|---|---|---|
| Longueur | 165 mm 6.5 inches | 170 mm 6.7 inches |
| TDP | 100 W | 75 W |
| Suggestions pour le PSU | 300 W | 250 W |
| Sorties | 1x DVI1x HDMI1x DisplayPort | 1x DVI1x HDMI1x DisplayPort |
| Connecteurs de puissance | 1x 6-pin | None |
| Board number | C582, C936 | C994 |
Caractéristiques graphiques
| DirectX | 12 (12_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.3 | 6.4 |
