NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce GTX 680MX Mac Edition
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 2GB VRAM GeForce GTX 680MX Mac Edition 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 6 months late
Lower TDP (50W vs 122W)
NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 80.00GB/s)
1152 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
0.73 TFLOPS
GeForce GTX 680MX Mac Edition
+202%
2.209 TFLOPS
Graphics Card
Apr 2013
Release Date
Oct 2012
GeForce 600M
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
80.00GB/s
Bandwidth
160.0GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
1536
32
TMUs
128
16
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
23.01 GPixel/s
30.40 GTexel/s
Texture Rate
92.03 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
2.209 TFLOPS
30.40 GFLOPS
FP64 (double)
92.03 GFLOPS
Board Design
50W
TDP
122W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
GK107
GPU Name
GK104
-
GPU Variant
N13E-GTX2-A2
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
3.54 billion
118 mm²
Die Size
294 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.0
CUDA
3.0
5.1
Shader Model
5.1
