AMD Radeon R9 M485X vs NVIDIA GeForce GTX 780M Mac Edition
Processeur graphique
| Nom du GPU | Amethyst | GK104 |
|---|---|---|
| GPU variant | Amethyst XT | N14E-GTX-A2 |
| Architecture | GCN 3.0 | Kepler |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 28 nm |
| Transistors | 5,000 million | 3,540 million |
| Taille des matrices | 366 mm² | 294 mm² |
Graphiques mobiles
| Date de publication | May 15th, 2016 | Nov 8th, 2013 |
|---|---|---|
| Génération | Crystal System (R9 M400) | GeForce 700M |
| Production | End-of-life | End-of-life |
| Bus interface | MXM-B (3.0) | MXM-B (3.0) |
| Prédécesseur | Solar System | GeForce 600M |
| Successeur | Mobility Radeon | GeForce 800M |
Vitesse clock
| GPU clock | 723 MHz | — |
|---|---|---|
| Mémoire clock | 1250 MHz 5 Gbps effective | 1250 MHz 5 Gbps effective |
| Base clock | — | 771 MHz |
| Boost clock | — | 797 MHz |
Mémoire
| Taille de la mémoire | 8 GB | 4 GB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 256 bit | 256 bit |
| Bande passante | 160.0 GB/s | 160.0 GB/s |
Render Config
| Shading units | 2048 | 1536 |
|---|---|---|
| TMUs | 128 | 128 |
| ROPs | 32 | 32 |
| Compute units | 32 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 512 KB | 512 KB |
| Comptage SMX | — | 8 |
Performance théorique
| Taux de pixel | 23.14 GPixel/s | 25.50 GPixel/s |
|---|---|---|
| Taux de texture | 92.54 GTexel/s | 102.0 GTexel/s |
| FP16 (half) performance | 2.961 TFLOPS (1:1) | — |
| FP32 (float) performance | 2.961 TFLOPS | 2.448 TFLOPS |
| FP64 (double) performance | 185.1 GFLOPS (1:16) | 102.0 GFLOPS (1:24) |
Board Design
| Taille Slot | MXM Module | MXM Module |
|---|---|---|
| TDP | 250 W | 122 W |
| Sorties | No outputs | No outputs |
| Connecteurs de puissance | None | — |
Caractéristiques graphiques
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 6.3 | 5.1 |
| CUDA | — | 3.0 |
