AMD Radeon R5 M255 vs NVIDIA GeForce GT 425M
Processeur graphique
| Nom du GPU | Topaz | GF108 |
|---|---|---|
| GPU variant | Topaz PRO (216-0864032) | N11P-GS-A1 |
| Architecture | GCN 3.0 | Fermi |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 40 nm |
| Transistors | 1,550 million | 585 million |
| Taille des matrices | 125 mm² | 116 mm² |
Graphiques mobiles
| Date de publication | Oct 12th, 2014 | Sep 3rd, 2010 |
|---|---|---|
| Génération | Crystal System (R5 M200) | GeForce 400M |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Prédécesseur | Solar System | GeForce 300M |
| Successeur | Mobility Radeon | GeForce 500M |
Vitesse clock
| Base clock | 925 MHz | — |
|---|---|---|
| Boost clock | 940 MHz | — |
| Mémoire clock | 1000 MHz 4 Gbps effective | 800 MHz 1600 Mbps effective |
| GPU clock | — | 560 MHz |
| Shader clock | — | 1120 MHz |
Mémoire
| Taille de la mémoire | 1024 MB | 1024 MB |
|---|---|---|
| Type de mémoire | GDDR5 | DDR3 |
| Bus mémoire | 128 bit | 128 bit |
| Bande passante | 64.00 GB/s | 25.60 GB/s |
Render Config
| Shading units | 384 | 96 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 8 | 4 |
| Compute units | 6 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 256 KB | 256 KB |
| Comptage SM | — | 2 |
Performance théorique
| Taux de pixel | 7.520 GPixel/s | 2.240 GPixel/s |
|---|---|---|
| Taux de texture | 22.56 GTexel/s | 8.960 GTexel/s |
| FP16 (half) performance | 721.9 GFLOPS (1:1) | — |
| FP32 (float) performance | 721.9 GFLOPS | 215.0 GFLOPS |
| FP64 (double) performance | 45.12 GFLOPS (1:16) | 17.92 GFLOPS (1:12) |
Board Design
| TDP | unknown | 23 W |
|---|---|---|
| Sorties | No outputs | No outputs |
Caractéristiques graphiques
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 6.3 | 5.1 |
| CUDA | — | 2.1 |
