NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce 940MX
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 2GB VRAM GeForce 940MX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660M Mac Edition 's Advantages
Larger VRAM bandwidth (80.00GB/s vs 16.02GB/s)
NVIDIA GeForce 940MX 's Advantages
Released 2 years and 9 months late
Boost Clock1242MHz
More VRAM (2GB vs 512GB)
Lower TDP (23W vs 50W)
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
0.73 TFLOPS
GeForce 940MX
+30%
0.954 TFLOPS
Graphics Card
Apr 2013
Release Date
Jan 2016
GeForce 600M
Generation
GeForce 900M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
1004 MHz
-
Boost Clock
1242 MHz
1250 MHz
Memory Clock
1001 MHz
Memory
512MB
Memory Size
2GB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
64bit
80.00GB/s
Bandwidth
16.02GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
384
32
TMUs
24
16
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SMM)
256 KB
L2 Cache
1024 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
9.936 GPixel/s
30.40 GTexel/s
Texture Rate
29.81 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
953.9 GFLOPS
30.40 GFLOPS
FP64 (double)
29.81 GFLOPS
Board Design
50W
TDP
23W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
GK107
GPU Name
GM108
-
GPU Variant
N16S-GTR-S
Kepler
Architecture
Maxwell
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
Unknown
118 mm²
Die Size
Unknown
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.3
3.0
CUDA
5.0
5.1
Shader Model
5.1
