GeForce GTX 680MX Mac Edition vs GeForce GTX 660M
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 1024MB VRAM GeForce GTX 660M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 680MX Mac Edition 's Advantages
Released 7 months late
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 64.00GB/s)
1152 additional rendering cores
GeForce GTX 660M 's Advantages
Boost Clock950MHz
Lower TDP (50W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 680MX Mac Edition
+202%
2209
GeForce GTX 660M
730
Graphics Card
Oct 2012
Release Date
Mar 2012
GeForce 600M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
835 MHz
-
Boost Clock
950 MHz
1250 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
64.00GB/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
Graphics Processor
GK104
GPU Name
GK107
N13E-GTX2-A2
GPU Variant
N13E-GE-A2
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
