AMD Radeon HD 8970M vs NVIDIA GeForce MX450 30.5W 8Gbps
Processeur graphique
| Nom du GPU | Neptune | TU117 |
|---|---|---|
| GPU variant | Neptune XT (216-0847000) | — |
| Architecture | GCN 1.0 | Turing |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 12 nm |
| Transistors | 2,800 million | 4,700 million |
| Taille des matrices | 212 mm² | 200 mm² |
Graphiques mobiles
| Date de publication | May 14th, 2013 | Aug 25th, 2020 |
|---|---|---|
| Génération | Solar System (HD 8900M) | GeForce MX (4xx) |
| Production | End-of-life | Active |
| Bus interface | PCIe 3.0 x16 | PCIe 4.0 x4 |
| Prédécesseur | London | — |
| Successeur | Crystal System | — |
Vitesse clock
| Base clock | 850 MHz | 1035 MHz |
|---|---|---|
| Boost clock | 900 MHz | 1275 MHz |
| Mémoire clock | 1200 MHz 4.8 Gbps effective | 2000 MHz 8 Gbps effective |
Mémoire
| Taille de la mémoire | 4 GB | 2 GB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 256 bit | 64 bit |
| Bande passante | 153.6 GB/s | 64.00 GB/s |
Render Config
| Shading units | 1280 | 896 |
|---|---|---|
| TMUs | 80 | 56 |
| ROPs | 32 | 32 |
| Compute units | 20 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 512 KB | 512 KB |
| Comptage SM | — | 14 |
Performance théorique
| Taux de pixel | 28.80 GPixel/s | 40.80 GPixel/s |
|---|---|---|
| Taux de texture | 72.00 GTexel/s | 71.40 GTexel/s |
| FP32 (float) performance | 2.304 TFLOPS | 2.285 TFLOPS |
| FP64 (double) performance | 144.0 GFLOPS (1:16) | 71.40 GFLOPS (1:32) |
| FP16 (half) performance | — | 4.570 TFLOPS (2:1) |
Board Design
| Taille Slot | MXM Module | — |
|---|---|---|
| TDP | 100 W | 31 W |
| Sorties | No outputs | No outputs |
| Connecteurs de puissance | — | None |
Caractéristiques graphiques
| DirectX | 12 (11_1) | 12 (12_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 6.6 |
| CUDA | — | 7.5 |
