AMD Radeon R9 255 OEM vs NVIDIA Switch GPU 20nm
Processeur graphique
| Nom du GPU | Cape Verde | GM20B |
|---|---|---|
| GPU variant | Cape Verde PRX | ODNX02-A2 |
| Architecture | GCN 1.0 | Maxwell 2.0 |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 20 nm |
| Transistors | 1,500 million | 2,000 million |
| Taille des matrices | 123 mm² | 118 mm² |
Carte graphique
| Date de publication | Dec 21st, 2013 | Mar 17th, 2017 |
|---|---|---|
| Génération | Volcanic Islands | Console GPU |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 3.0 x16 | IGP |
| Prédécesseur | Sea Islands | — |
| Successeur | Pirate Islands | — |
| Prix de lancement | — | 299 USD |
Vitesse clock
| Base clock | 900 MHz | 384 MHz |
|---|---|---|
| Boost clock | 930 MHz | 768 MHz |
| Mémoire clock | 1150 MHz 4.6 Gbps effective | 1600 MHz 3.2 Gbps effective |
Mémoire
| Taille de la mémoire | 2 GB | 4 GB |
|---|---|---|
| Type de mémoire | GDDR5 | DDR4 |
| Bus mémoire | 128 bit | 64 bit |
| Bande passante | 73.60 GB/s | 25.60 GB/s |
Render Config
| Shading units | 512 | 256 |
|---|---|---|
| TMUs | 32 | 16 |
| ROPs | 16 | 16 |
| Compute units | 8 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | — |
| Comptage SMM | — | 2 |
Performance théorique
| Taux de pixel | 14.88 GPixel/s | 12.29 GPixel/s |
|---|---|---|
| Taux de texture | 29.76 GTexel/s | 12.29 GTexel/s |
| FP32 (float) performance | 952.3 GFLOPS | 393.2 GFLOPS |
| FP64 (double) performance | 59.52 GFLOPS (1:16) | 12.29 GFLOPS (1:32) |
| FP16 (half) performance | — | 786.4 GFLOPS (2:1) |
Board Design
| Taille Slot | Dual-slot | IGP |
|---|---|---|
| TDP | 65 W | 15 W |
| Suggestions pour le PSU | 250 W | 350 W |
| Sorties | No outputs | No outputs |
| Connecteurs de puissance | 1x 6-pin | None |
| Board number | C750 | HAC-001 |
| Longueur | — | 239 mm 9.4 inches |
| Taille | — | 101 mm 4 inches |
| Taille | — | 28 mm 1.1 inches |
| Poids | — | 0.4 kg (0.88 lbs) |
Caractéristiques graphiques
| DirectX | 12 (11_1) | 12 (12_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 5.1 | 6.4 |
| CUDA | — | 5.3 |
