GeForce GT 640 Rev. 2 and Radeon E6465 - video card comparison
GeForce GT 640 Rev. 2
Radeon E6465
Architecture
Kepler 2.0 (2013−2015)
TeraScale 2 (2009−2015)
GPU code name
GK208
Caicos
Market segment
Desktop
Desktop
Release date
May 2013
September 2015
Interface
PCIe 2.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
1046 MHz
600 MHz
Floating-point performance
803.3 gflops
192.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
915 million
370 million
Pipelines / CUDA cores
384
160
Power consumption (TDP)
49 Watt
25 Watt
Texture fill rate
33.47
4.800
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5008 MHz
3200 MHz
Memory bandwidth
40.06 GB/s
25.6 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DirectX
12 (11_0)
11.2 (11_0)
CUDA
3.5
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
N/A