NVIDIA GeForce 840A vs NVIDIA GeForce 940M
Processeur graphique
Nom du GPU | GM108 | GM107 |
---|---|---|
Architecture | Maxwell | Maxwell |
Fonderie | TSMC | TSMC |
Taille du processus | 28 nm | 28 nm |
Transistors | unknown | 1,870 million |
Taille des matrices | unknown | 148 mm² |
GPU variant | — | N16S-GT1-KB-B |
Graphiques mobiles
Date de publication | Mar 17th, 2014 | Mar 13th, 2015 |
---|---|---|
Génération | GeForce 800A | GeForce 900M |
Production | End-of-life | End-of-life |
Bus interface | PCIe 3.0 x8 | MXM-B (3.0) |
Prédécesseur | GeForce 700A | GeForce 800M |
Successeur | GeForce 900A | GeForce 10 Mobile |
Vitesse clock
Base clock | 1029 MHz | 1020 MHz |
---|---|---|
Boost clock | 1124 MHz | 1098 MHz |
Mémoire clock | 1001 MHz 2 Gbps effective | 900 MHz 1800 Mbps effective |
Mémoire
Taille de la mémoire | 2 GB | 2 GB |
---|---|---|
Type de mémoire | DDR3 | DDR3 |
Bus mémoire | 64 bit | 64 bit |
Bande passante | 16.02 GB/s | 14.40 GB/s |
Render Config
Shading units | 384 | 512 |
---|---|---|
TMUs | 16 | 32 |
ROPs | 8 | 16 |
Comptage SMM | 3 | 4 |
Cache L1 | 64 KB (per SMM) | 64 KB (per SMM) |
Cache L2 | 1024 KB | 2 MB |
Performance théorique
Taux de pixel | 8.992 GPixel/s | 17.57 GPixel/s |
---|---|---|
Taux de texture | 17.98 GTexel/s | 35.14 GTexel/s |
FP32 (float) performance | 863.2 GFLOPS | 1,124 GFLOPS |
FP64 (double) performance | 26.98 GFLOPS (1:32) | 35.14 GFLOPS (1:32) |
Board Design
Taille Slot | IGP | MXM Module |
---|---|---|
TDP | 33 W | 75 W |
Sorties | No outputs | No outputs |
Caractéristiques graphiques
DirectX | 12 (11_0) | 12 (11_0) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 3.0 | 3.0 |
Vulkan | 1.1 | 1.1 |
CUDA | 5.0 | 5.0 |
Shader model | 5.1 | 5.1 |