GeForce GT 630M and GeForce GT 640 Rev. 2 - video card comparison
GeForce GT 630M
GeForce GT 640 Rev. 2
Architecture
Fermi (2010−2014)
Kepler 2.0 (2013−2015)
GPU code name
N13P-GL/GL2
GK208
Market segment
Laptop
Desktop
Release date
December 2011
May 2013
Bus support
PCI Express 2.0
-
Interface
MXM-A (3.0)
PCIe 2.0 x8
Supplementary power connectors
-
None
Core clock speed
Up to 800 MHz
1046 MHz
CUDA cores
96
-
Floating-point performance
253.4 gflops
803.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
585 million
915 million
Pipelines / CUDA cores
96
384
Power consumption (TDP)
33 Watt
49 Watt
Texture fill rate
Up to 12.8 billion/sec
33.47
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
Up to 128bit
64 Bit
Memory clock speed
1800 MHz
5008 MHz
Memory bandwidth
Up to 32.0 GB/s
40.06 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
3.5
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126
3D Blu-Ray
+
-
Optimus
+
-