GeForce GT 640 Rev. 2 and Radeon X550 - video card comparison
GeForce GT 640 Rev. 2
Radeon X550
Architecture
Kepler 2.0 (2013−2015)
Rage 9 (2003−2008)
GPU code name
GK208
RV370
Market segment
Desktop
Desktop
Release date
May 2013
July 2005
Interface
PCIe 2.0 x8
PCIe 1.0 x16
Supplementary power connectors
None
None
Core clock speed
1046 MHz
400 MHz
Floating-point performance
803.3 gflops
-
Manufacturing process technology
28 nm
110 nm
Number of transistors
915 million
107 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
49 Watt
-
Texture fill rate
33.47
1.600
Memory type
GDDR5
DDR
Maximum RAM amount
1 GB
128 MB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5008 MHz
500 MHz
Memory bandwidth
40.06 GB/s
8 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
9.0
CUDA
3.5
-
OpenCL
1.2
N/A
OpenGL
4.6
2.0
Shader Model
5.1
-
Vulkan
1.1.126
N/A