NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce 825M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 1024MB VRAM GeForce 825M 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
Larger VRAM bandwidth (80.00GB/s vs 14.40GB/s)
NVIDIA GeForce 825M 's Advantages
Released 9 months late
Boost Clock941MHz
More VRAM (1024GB vs 512GB)
Lower TDP (33W vs 50W)
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
0.73 TFLOPS
GeForce 825M
0.723 TFLOPS
Graphics Card
Apr 2013
Release Date
Jan 2014
GeForce 600M
Generation
GeForce 800M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
850 MHz
-
Boost Clock
941 MHz
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
64bit
80.00GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
384
32
TMUs
32
16
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
7.600 GPixel/s
Pixel Rate
7.528 GPixel/s
30.40 GTexel/s
Texture Rate
30.11 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
722.7 GFLOPS
30.40 GFLOPS
FP64 (double)
30.11 GFLOPS
Board Design
50W
TDP
33W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
GK107
GPU Name
GK208
-
-
-
Kepler
Architecture
Kepler 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.02 billion
118 mm²
Die Size
87 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
3.5
5.1
Shader Model
5.1
