GeForce GT 640 OEM and Radeon X1550 - video card comparison
GeForce GT 640 OEM
Radeon X1550
Architecture
Kepler (2012−2018)
Ultra-Threaded SE
GPU code name
GK107
RV516
Market segment
Desktop
Desktop
Release date
April 2012
2007
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
None
Core clock speed
797 MHz
550 MHz
Floating-point performance
612.1 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,270 million
105 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
50 Watt
27 Watt
Texture fill rate
25.50
2.200
Memory type
DDR3
DDR2
Maximum RAM amount
2 GB
256 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
800 MBps
Memory bandwidth
28.51 GB/s
12.8 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
9.0c (9_3)
CUDA
3.0
-
OpenCL
1.2
N/A
OpenGL
4.6
2.1
Shader Model
5.1
3.0
Vulkan
1.1.126
N/A