GeForce GT 635 OEM and GeForce GT 640 OEM Rebrand - video card comparison
GeForce GT 635 OEM
GeForce GT 640 OEM Rebrand
Architecture
Kepler 2.0 (2013−2015)
Fermi 2.0 (2010−2014)
GPU code name
GK208
GF116
Market segment
Desktop
Desktop
Release date
October 2013
April 2012
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
967 MHz
720 MHz
Floating-point performance
742.7 gflops
414.7 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
915 million
1,170 million
Pipelines / CUDA cores
384
144
Power consumption (TDP)
35 Watt
75 Watt
Texture fill rate
30.94
17.28
Memory type
DDR3
DDR3
Maximum RAM amount
1 GB
1536 MB
Memory bus width
64 Bit
192 Bit
Memory clock speed
1800 MHz
1600 MHz
Memory bandwidth
14.4 GB/s
38.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
2x DVI, 1x mini-HDMI
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
3.5
2.1
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A