NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce GT 555M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 2GB VRAM GeForce GT 555M 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 1 years and 1 months late
Larger VRAM bandwidth (80.00GB/s vs 28.80GB/s)
240 additional rendering cores
NVIDIA GeForce GT 555M 's Advantages
More VRAM (2GB vs 512GB)
Lower TDP (35W vs 50W)
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
+87%
0.73 TFLOPS
GeForce GT 555M
0.389 TFLOPS
Graphics Card
Apr 2013
Release Date
Mar 2012
GeForce 600M
Generation
GeForce 500M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
2GB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
128bit
80.00GB/s
Bandwidth
28.80GB/s
Render Config
-
-
-
-
SM Count
2
384
Shading Units
144
32
TMUs
24
16
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
2.700 GPixel/s
30.40 GTexel/s
Texture Rate
16.20 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
388.8 GFLOPS
30.40 GFLOPS
FP64 (double)
32.40 GFLOPS
Board Design
50W
TDP
35W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
GK107
GPU Name
GF116
-
GPU Variant
N12E-GE2-A1
Kepler
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
1.17 billion
118 mm²
Die Size
238 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
2.1
5.1
Shader Model
5.1
