NVIDIA GeForce 920M vs NVIDIA GeForce GT 640M LE
Processeur graphique
| Nom du GPU | GK208B | GF108 |
|---|---|---|
| GPU variant | N16V-GM | — |
| Architecture | Kepler 2.0 | Fermi |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 40 nm |
| Transistors | 1,020 million | 585 million |
| Taille des matrices | 87 mm² | 116 mm² |
Graphiques mobiles
| Date de publication | Mar 13th, 2015 | May 4th, 2012 |
|---|---|---|
| Génération | GeForce 900M | GeForce 600M |
| Production | Active | End-of-life |
| Bus interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Prédécesseur | GeForce 800M | GeForce 500M |
| Successeur | GeForce 10 Mobile | GeForce 700M |
| Critiques | — | 2 in our database |
Vitesse clock
| GPU clock | 954 MHz | 753 MHz |
|---|---|---|
| Mémoire clock | 900 MHz 1800 Mbps effective | 785 MHz 3.1 Gbps effective |
| Shader clock | — | 1505 MHz |
Mémoire
| Taille de la mémoire | 2 GB | 2 GB |
|---|---|---|
| Type de mémoire | DDR3 | GDDR5 |
| Bus mémoire | 64 bit | 128 bit |
| Bande passante | 14.40 GB/s | 50.24 GB/s |
Render Config
| Shading units | 384 | 96 |
|---|---|---|
| TMUs | 32 | 16 |
| ROPs | 8 | 4 |
| Comptage SMX | 2 | — |
| Cache L1 | 16 KB (per SMX) | 64 KB (per SM) |
| Cache L2 | 512 KB | 256 KB |
| Comptage SM | — | 2 |
Performance théorique
| Taux de pixel | 7.632 GPixel/s | 3.012 GPixel/s |
|---|---|---|
| Taux de texture | 30.53 GTexel/s | 12.05 GTexel/s |
| FP32 (float) performance | 732.7 GFLOPS | 289.0 GFLOPS |
| FP64 (double) performance | 30.53 GFLOPS (1:24) | 24.08 GFLOPS (1:12) |
Board Design
| Taille Slot | IGP | — |
|---|---|---|
| TDP | 33 W | 32 W |
| Sorties | No outputs | No outputs |
Caractéristiques graphiques
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 1.1 |
| Vulkan | 1.1 | — |
| CUDA | 3.5 | 2.1 |
| Shader model | 5.1 | 5.1 |
