GeForce GT 640 and GeForce 6600 AGP - video card comparison
GeForce GT 640
GeForce 6600 AGP
Architecture
Kepler (2012−2018)
Curie (2003−2013)
GPU code name
GK107
NV43 A2
Market segment
Desktop
Desktop
Release date
June 2012
August 2004
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
None
Core clock speed
902 MHz
300 MHz
Floating-point performance
692.7 gflops
-
Manufacturing process technology
28 nm
110 nm
Number of transistors
1,270 million
146 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
65 Watt
-
Texture fill rate
28.86
2.400
Memory type
DDR3
DDR
Maximum RAM amount
2 GB
128 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
500 MHz
Memory bandwidth
28.51 GB/s
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