NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce GTX 870M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 3GB VRAM GeForce GTX 870M 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
Lower TDP (50W vs 100W)
NVIDIA GeForce GTX 870M 's Advantages
Released 11 months late
Boost Clock967MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (120.0GB/s vs 80.00GB/s)
960 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
0.73 TFLOPS
GeForce GTX 870M
+256%
2.599 TFLOPS
Graphics Card
Apr 2013
Release Date
Mar 2014
GeForce 600M
Generation
GeForce 800M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
941 MHz
-
Boost Clock
967 MHz
1250 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
192bit
80.00GB/s
Bandwidth
120.0GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
1344
32
TMUs
112
16
ROPs
24
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
384 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
27.08 GPixel/s
30.40 GTexel/s
Texture Rate
108.3 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
2.599 TFLOPS
30.40 GFLOPS
FP64 (double)
108.3 GFLOPS
Board Design
50W
TDP
100W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
GK107
GPU Name
GK104
-
GPU Variant
N15E-GT-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
