GeForce GT 640 Rev. 2 and GeForce GT 610 - video card comparison
GeForce GT 640 Rev. 2
GeForce GT 610
Architecture
Kepler 2.0 (2013−2015)
Fermi 2.0 (2010−2014)
GPU code name
GK208
GF119
Market segment
Desktop
Desktop
Release date
May 2013
April 2012
Bus support
-
PCI Express 2.0
Interface
PCIe 2.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
1046 MHz
810 MHz
CUDA cores
-
48
Floating-point performance
803.3 gflops
155.5 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
915 million
292 million
Pipelines / CUDA cores
384
48
Power consumption (TDP)
49 Watt
29 Watt
Maximum GPU temperature
-
102 °C
Texture fill rate
33.47
6.5 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1024 MB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5008 MHz
1.8 GB/s
Memory bandwidth
40.06 GB/s
14.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
Dual Link DVI-I, HDMI, VGA
Multi monitor support
-
+
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
Internal
DirectX
12 (11_0)
12 (11_0)
CUDA
3.5
+
OpenCL
1.2
1.1
OpenGL
4.6
4.2
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
3D Blu-Ray
-
+