GeForce 820A and GeForce GT 635M - video card comparison
Passmark - benchmark score GeForce 820A vs GeForce GT 635M
GeForce 820A
572
GeForce GT 635M
578
GeForce 820A
GeForce GT 635M
Architecture
Fermi 2.0 (2010−2014)
Fermi (2010−2014)
GPU code name
GF117
N13E-GE2
Market segment
Desktop
Laptop
Release date
March 2014
December 2011
Bus support
-
PCI Express 2.0
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Boost clock speed
-
753 MHz
Core clock speed
775 MHz
Up to 675 MHz
CUDA cores
-
Up to 144
Floating-point performance
297.6 gflops
253.4 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
585 million
1,170 million
Pipelines / CUDA cores
96
144
Power consumption (TDP)
15 Watt
35 Watt
Texture fill rate
12.40
Up to 16.2 billion/sec
Memory type
DDR3
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
Up to 192bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
14.4 GB/s
Up to 43.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (11_0)
12 API
CUDA
2.1
+
OpenCL
1.1
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
N/A
N/A
3D Blu-Ray
-
+
Optimus
-
+