GeForce GT 640 and GeForce GT 630M - video card comparison
Passmark - benchmark score GeForce GT 640 vs GeForce GT 630M
GeForce GT 640
1209
GeForce GT 630M
556
GeForce GT 640
GeForce GT 630M
Architecture
Kepler (2012−2018)
Fermi (2010−2014)
GPU code name
GK107
N13P-GL/GL2
Market segment
Desktop
Laptop
Release date
June 2012
December 2011
Bus support
-
PCI Express 2.0
Interface
PCIe 3.0 x16
MXM-A (3.0)
Supplementary power connectors
None
-
Core clock speed
902 MHz
Up to 800 MHz
CUDA cores
-
96
Floating-point performance
692.7 gflops
253.4 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
585 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
65 Watt
33 Watt
Texture fill rate
28.86
Up to 12.8 billion/sec
Memory type
DDR3
DDR3\GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
Up to 128bit
Memory clock speed
1782 MHz
1800 MHz
Memory bandwidth
28.51 GB/s
Up to 32.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (11_0)
12 (11_0)
CUDA
3.0
+
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
3D Blu-Ray
-
+
Optimus
-
+