NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce 805A
We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 1024MB VRAM GeForce 805A 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 16.02GB/s)
192 additional rendering cores
NVIDIA GeForce 805A 's Advantages
Released 1 years and 3 months late
Boost Clock758MHz
More VRAM (1024GB vs 512GB)
Lower TDP (15W vs 50W)
Score
Benchmark
FP32 (float)
GeForce GTX 660M Mac Edition
+150%
0.73 TFLOPS
GeForce 805A
0.291 TFLOPS
Graphics Card
Apr 2013
Release Date
Jul 2014
GeForce 600M
Generation
GeForce 800A
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
719 MHz
-
Boost Clock
758 MHz
1250 MHz
Memory Clock
1001 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
64bit
80.00GB/s
Bandwidth
16.02GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
192
32
TMUs
16
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
6.064 GPixel/s
30.40 GTexel/s
Texture Rate
12.13 GTexel/s
-
-
-
729.6 GFLOPS
FP32 (float)
291.1 GFLOPS
30.40 GFLOPS
FP64 (double)
12.13 GFLOPS
Board Design
50W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
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
