Radeon HD 7670M and GeForce GTX 660M Mac Edition - video card comparison
Radeon HD 7670M
GeForce GTX 660M Mac Edition
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Thames XT
GK107
Market segment
Laptop
Desktop
Release date
June 2011
April 2013
Interface
PCIe 2.0 x16
MXM-B (3.0)
Supplementary power connectors
-
None
Core clock speed
600 MHz
950 MHz
Floating-point performance
576.0 gflops
729.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
1,270 million
Pipelines / CUDA cores
480
384
Power consumption (TDP)
20 Watt
50 Watt
Texture fill rate
14.40
30.40
Memory type
DDR3, (GDDR5)
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
5000 MHz
Memory bandwidth
28.8 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126