NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce 405M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 512MB VRAM GeForce 405M 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
Released 2 years and 3 months late
Larger VRAM bandwidth (80.00GB/s vs 12.80GB/s)
368 additional rendering cores
NVIDIA GeForce 405M 's Advantages
Lower TDP (14W vs 50W)
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
+1771%
0.73 TFLOPS
GeForce 405M
0.039 TFLOPS
Graphics Card
Apr 2013
Release Date
Jan 2011
GeForce 600M
Generation
GeForce 400M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
800 MHz
Memory
512MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
128bit
Memory Bus
64bit
80.00GB/s
Bandwidth
12.80GB/s
Render Config
-
-
-
-
SM Count
2
384
Shading Units
16
32
TMUs
8
16
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
256 KB
L2 Cache
32 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
2.424 GPixel/s
30.40 GTexel/s
Texture Rate
4.848 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
38.78 GFLOPS
30.40 GFLOPS
FP64 (double)
-
Board Design
50W
TDP
14W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
GK107
GPU Name
GT218
-
-
-
Kepler
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.26 billion
118 mm²
Die Size
57 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.2
5.1
Shader Model
4.1
