Radeon HD 7670A and GeForce GT 640M Mac Edition - video card comparison
Radeon HD 7670A
GeForce GT 640M Mac Edition
Architecture
TeraScale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Turks
GK107
Market segment
Desktop
Desktop
Release date
January 2012
February 2013
Interface
MXM-A (3.0)
PCIe 3.0 x16
Core clock speed
600 MHz
745 MHz
Floating-point performance
576.0 gflops
572.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
1,270 million
Pipelines / CUDA cores
480
384
Power consumption (TDP)
45 Watt
32 Watt
Texture fill rate
14.40
23.84
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4000 MHz
5000 MHz
Memory bandwidth
64 GB/s
40 GB/s
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