NVIDIA GeForce GTX 680MX Mac Edition vs NVIDIA GeForce GTX 660M Mac Edition
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 512MB VRAM GeForce GTX 660M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
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
NVIDIA GeForce GTX 660M Mac Edition 's Advantages
Released 6 months late
Lower TDP (50W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 680MX Mac Edition
+202%
2.209 TFLOPS
GeForce GTX 660M Mac Edition
0.73 TFLOPS
Graphics Card
Oct 2012
Release Date
Apr 2013
GeForce 600M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1250 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
80.00GB/s
Render Config
-
-
-
-
-
-
1536
Shading Units
384
128
TMUs
32
32
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
23.01 GPixel/s
Pixel Rate
7.600 GPixel/s
92.03 GTexel/s
Texture Rate
30.40 GTexel/s
-
-
-
2.209 TFLOPS
FP32 (float)
729.6 GFLOPS
92.03 GFLOPS
FP64 (double)
30.40 GFLOPS
Board Design
122W
TDP
50W
-
-
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Processor
GK104
GPU Name
GK107
N13E-GTX2-A2
GPU Variant
-
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
1.27 billion
294 mm²
Die Size
118 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
