GeForce GT 635M and GeForce GT 420 OEM - video card comparison
GeForce GT 635M
GeForce GT 420 OEM
Architecture
Fermi (2010−2014)
Fermi (2010−2014)
GPU code name
N13E-GE2
GF108
Market segment
Laptop
Desktop
Release date
December 2011
September 2010
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
None
Boost clock speed
753 MHz
-
Core clock speed
Up to 675 MHz
700 MHz
CUDA cores
Up to 144
-
Floating-point performance
253.4 gflops
134.4 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,170 million
585 million
Pipelines / CUDA cores
144
48
Power consumption (TDP)
35 Watt
50 Watt
Texture fill rate
Up to 16.2 billion/sec
2.800
Memory type
DDR3
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
Up to 192bit
128 Bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
Up to 43.2 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_0)
CUDA
+
2.1
OpenCL
1.1
1.1
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
N/A
N/A
3D Blu-Ray
+
-
Optimus
+
-