GeForce GT 640 and Radeon HD 7640G + HD 7670M Dual Graphics - video card comparison
GeForce GT 640
Radeon HD 7640G + HD 7670M Dual Graphics
Architecture
Kepler (2012−2018)
Terascale 3 (2010−2013)
GPU code name
GK107
-
Market segment
Desktop
Laptop
Release date
June 2012
May 2012
Interface
PCIe 3.0 x16
-
Supplementary power connectors
None
-
Core clock speed
902 MHz
655 / 600 MHz
Floating-point performance
692.7 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
-
Pipelines / CUDA cores
384
736
Power consumption (TDP)
65 Watt
-
Texture fill rate
28.86
-
Memory type
DDR3
-
Maximum RAM amount
2 GB
-
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
1800 MHz
Memory bandwidth
28.51 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
-
HDMI
+
-
DirectX
12 (11_0)
11
CUDA
3.0
-
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
Vulkan
1.1.126
-