Radeon HD 7660G + HD 7670M Dual Graphics and GeForce GTX 660M Mac Edition - video card comparison
Radeon HD 7660G + HD 7670M Dual Graphics
GeForce GTX 660M Mac Edition
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
-
GK107
Market segment
Laptop
Desktop
Release date
May 2012
April 2013
Interface
-
MXM-B (3.0)
Supplementary power connectors
-
None
Core clock speed
685 / 600 MHz
950 MHz
Floating-point performance
-
729.6 gflops
Manufacturing process technology
32 nm
28 nm
Number of transistors
-
1,270 million
Pipelines / CUDA cores
862
384
Power consumption (TDP)
-
50 Watt
Texture fill rate
-
30.40
Memory type
DDR3,GDDR5
GDDR5
Maximum RAM amount
-
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
5000 MHz
Memory bandwidth
-
80 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
11
12 (11_0)
CUDA
-
3.0
OpenCL
-
1.2
OpenGL
-
4.6
Shader Model
-
5.1
Vulkan
-
1.1.126