AMD Radeon RX 550 vs AMD Radeon RX 580
Processeur graphique
| Nom du GPU | Lexa | Polaris 20 |
|---|---|---|
| GPU variant | Lexa PRO (215-0904018) | Polaris 20 XTX (215-0910038) |
| Architecture | GCN 4.0 | GCN 4.0 |
| Fonderie | GlobalFoundries | GlobalFoundries |
| Taille du processus | 14 nm | 14 nm |
| Transistors | 2,200 million | 5,700 million |
| Taille des matrices | 103 mm² | 232 mm² |
Carte graphique
| Date de publication | Apr 20th, 2017 | Apr 18th, 2017 |
|---|---|---|
| Génération | Polaris | Polaris |
| Production | End-of-life | Active |
| Prix de lancement | 79 USD | 229 USD |
| Bus interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
| Prédécesseur | Arctic Islands | Arctic Islands |
| Successeur | Vega | Vega |
| Prix courant | — | Amazon / Newegg |
| Critiques | — | 52 in our database |
Vitesse clock
| Base clock | 1100 MHz | 1257 MHz |
|---|---|---|
| Boost clock | 1183 MHz | 1340 MHz |
| Mémoire clock | 1750 MHz 7 Gbps effective | 2000 MHz 8 Gbps effective |
Mémoire
| Taille de la mémoire | 2 GB | 8 GB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 128 bit | 256 bit |
| Bande passante | 112.0 GB/s | 256.0 GB/s |
Render Config
| Shading units | 512 | 2304 |
|---|---|---|
| TMUs | 32 | 144 |
| ROPs | 16 | 32 |
| Compute units | 8 | 36 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 2 MB |
Performance théorique
| Taux de pixel | 18.93 GPixel/s | 42.88 GPixel/s |
|---|---|---|
| Taux de texture | 37.86 GTexel/s | 193.0 GTexel/s |
| FP16 (half) performance | 1,211 GFLOPS (1:1) | 6.175 TFLOPS (1:1) |
| FP32 (float) performance | 1,211 GFLOPS | 6.175 TFLOPS |
| FP64 (double) performance | 75.71 GFLOPS (1:16) | 385.9 GFLOPS (1:16) |
Board Design
| Taille Slot | Dual-slot | Dual-slot |
|---|---|---|
| Longueur | 145 mm 5.7 inches | 241 mm 9.5 inches |
| TDP | 50 W | 185 W |
| Suggestions pour le PSU | 250 W | 450 W |
| Sorties | 1x DVI1x HDMI1x DisplayPort | 1x HDMI3x DisplayPort |
| Connecteurs de puissance | None | 1x 8-pin |
| Board number | D090-01 | C940, D009-04 |
Caractéristiques graphiques
| DirectX | 12 (12_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.4 | 6.4 |
