AMD Radeon HD 6970M Mac Edition vs AMD Radeon R9 M470
Processeur graphique
| Nom du GPU | Blackcomb | Emerald |
|---|---|---|
| GPU variant | Blackcomb XT (216-0811000) | Emerald PRO |
| Architecture | TeraScale 2 | GCN 2.0 |
| Fonderie | TSMC | TSMC |
| Taille du processus | 40 nm | 28 nm |
| Transistors | 1,700 million | 2,080 million |
| Taille des matrices | 212 mm² | 160 mm² |
Graphiques mobiles
| Date de publication | Aug 25th, 2011 | May 15th, 2016 |
|---|---|---|
| Génération | Vancouver (HD 6900M) | Crystal System (R9 M400) |
| Production | End-of-life | End-of-life |
| Bus interface | MXM-B (3.0) | PCIe 3.0 x16 |
| Prédécesseur | Manhattan | Solar System |
| Successeur | London | Mobility Radeon |
Vitesse clock
| GPU clock | 680 MHz | — |
|---|---|---|
| Mémoire clock | 900 MHz 3.6 Gbps effective | 1500 MHz 6 Gbps effective |
| Base clock | — | 900 MHz |
| Boost clock | — | 1000 MHz |
Mémoire
| Taille de la mémoire | 2 GB | 4 GB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 256 bit | 128 bit |
| Bande passante | 115.2 GB/s | 96.00 GB/s |
Render Config
| Shading units | 960 | 768 |
|---|---|---|
| TMUs | 48 | 48 |
| ROPs | 32 | 16 |
| Compute units | 12 | 12 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 256 KB |
Performance théorique
| Taux de pixel | 21.76 GPixel/s | 16.00 GPixel/s |
|---|---|---|
| Taux de texture | 32.64 GTexel/s | 48.00 GTexel/s |
| FP32 (float) performance | 1,306 GFLOPS | 1.536 TFLOPS |
| FP64 (double) performance | — | 96.00 GFLOPS (1:16) |
Board Design
| Taille Slot | MXM Module | — |
|---|---|---|
| TDP | 75 W | unknown |
| Sorties | No outputs | No outputs |
| Connecteurs de puissance | None | — |
| Board number | C296 | — |
Caractéristiques graphiques
| DirectX | 11.2 (11_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | — | 1.2 |
| Shader model | 5.0 | 6.3 |
