GeForce GT 640 OEM and GeForce 7950 GT AGP - video card comparison
GeForce GT 640 OEM
GeForce 7950 GT AGP
Architecture
Kepler (2012−2018)
Curie (2003−2013)
GPU code name
GK107
G71
Market segment
Desktop
Desktop
Release date
April 2012
April 2007
Interface
PCIe 3.0 x16
AGP 8x
Supplementary power connectors
None
1x Molex
Core clock speed
797 MHz
500 MHz
Floating-point performance
612.1 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,270 million
278 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
50 Watt
65 Watt
Texture fill rate
25.50
12.00
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1782 MHz
1200 MHz
Memory bandwidth
28.51 GB/s
38.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 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