NVIDIA GeForce 940M vs NVIDIA GeForce 8400M GT
We compared two Mobile platform GPUs: 2GB VRAM GeForce 940M and 512MB VRAM GeForce 8400M GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 940M 's Advantages
Released 7 years and 10 months late
Boost Clock1098MHz
More VRAM (2GB vs 512GB)
496 additional rendering cores
NVIDIA GeForce 8400M GT 's Advantages
Larger VRAM bandwidth (19.20GB/s vs 14.40GB/s)
Lower TDP (14W vs 75W)
Score
Benchmark
FP32 (float)
GeForce 940M
+3775%
1.124 TFLOPS
GeForce 8400M GT
0.029 TFLOPS
Graphics Card
Mar 2015
Release Date
May 2007
GeForce 900M
Generation
GeForce 8M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 1.0 x16
Clock Speeds
1020 MHz
Base Clock
-
1098 MHz
Boost Clock
-
900 MHz
Memory Clock
600 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
GDDR3
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
19.20GB/s
Render Config
-
-
-
-
SM Count
2
512
Shading Units
16
32
TMUs
8
16
ROPs
4
-
-
-
-
-
-
64 KB (per SMM)
L1 Cache
-
2 MB
L2 Cache
32 KB
-
-
-
Theoretical Performance
17.57 GPixel/s
Pixel Rate
1.800 GPixel/s
35.14 GTexel/s
Texture Rate
3.600 GTexel/s
-
-
-
1124 GFLOPS
FP32 (float)
28.80 GFLOPS
35.14 GFLOPS
FP64 (double)
-
Board Design
75W
TDP
14W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GM107
GPU Name
G86
N16S-GT1-KB-B
GPU Variant
G86-603-A2
Maxwell
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
1.87 billion
Transistors
0.21 billion
148 mm²
Die Size
127 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.3
Vulkan
N/A
5.0
CUDA
1.1
5.1
Shader Model
4.0
