GeForce GT 640 Rev. 2 and GeForce 9700M GT - video card comparison
GeForce GT 640 Rev. 2
GeForce 9700M GT
Architecture
Kepler 2.0 (2013−2015)
G9x (2007−2010)
GPU code name
GK208
NB9E-GE
Market segment
Desktop
Laptop
Release date
May 2013
June 2008
Interface
PCIe 2.0 x8
MXM-II
Supplementary power connectors
None
-
Core clock speed
1046 MHz
625 MHz
CUDA cores
-
32
Floating-point performance
803.3 gflops
99.2 gflops
Gigaflops
-
148
Manufacturing process technology
28 nm
65 nm
Number of transistors
915 million
314 million
Pipelines / CUDA cores
384
32
Power consumption (TDP)
49 Watt
45 Watt
Texture fill rate
33.47
10.00
Memory type
GDDR5
GDDR2, GDDR3
Maximum RAM amount
1 GB
512 MB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5008 MHz
800 MHz
Memory bandwidth
40.06 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DirectX
12 (11_0)
11.1 (10_0)
CUDA
3.5
+
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A