GeForce GT 640 Rev. 2 and Radeon HD 2400 PRO - video card comparison
GeForce GT 640 Rev. 2
Radeon HD 2400 PRO
Architecture
Kepler 2.0 (2013−2015)
TeraScale (2005−2013)
GPU code name
GK208
RV610
Market segment
Desktop
Desktop
Release date
May 2013
June 2007
Interface
PCIe 2.0 x8
PCIe 1.0 x16
Supplementary power connectors
None
None
Core clock speed
1046 MHz
525 MHz
Floating-point performance
803.3 gflops
42 gflops
Manufacturing process technology
28 nm
65 nm
Number of transistors
915 million
180 million
Pipelines / CUDA cores
384
40
Power consumption (TDP)
49 Watt
20 Watt
Texture fill rate
33.47
2.100
Memory type
GDDR5
DDR2
Maximum RAM amount
1 GB
256 MB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5008 MHz
800 MHz
Memory bandwidth
40.06 GB/s
6.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
10.0 (10_0)
CUDA
3.5
-
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A