GeForce GT 640 OEM and Radeon X1600 XT - video card comparison
GeForce GT 640 OEM
Radeon X1600 XT
Architecture
Kepler (2012−2018)
R500 (2005−2007)
GPU code name
GK107
RV530
Market segment
Desktop
Desktop
Release date
April 2012
October 2007
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
None
Core clock speed
797 MHz
590 MHz
Floating-point performance
612.1 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,270 million
157 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
50 Watt
42 Watt
Texture fill rate
25.50
2.360
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
256 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
1380 MHz
Memory bandwidth
28.51 GB/s
22.08 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
2.0
Shader Model
5.1
3.0
Vulkan
1.1.126
N/A