GeForce GT 640 and Radeon HD 7670 OEM - video card comparison
GeForce GT 640
Radeon HD 7670 OEM
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
GK107
Turks
Market segment
Desktop
Desktop
Release date
June 2012
January 2012
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
902 MHz
800 MHz
Floating-point performance
692.7 gflops
768.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
716 million
Pipelines / CUDA cores
384
480
Power consumption (TDP)
65 Watt
66 Watt
Texture fill rate
28.86
19.20
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
4000 MHz
Memory bandwidth
28.51 GB/s
64 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x DisplayPort, 1x VGA
HDMI
+
-
DirectX
12 (11_0)
11.2 (11_0)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
N/A