GeForce GT 620M and HD Graphics 400 - video card comparison
GeForce GT 620M
HD Graphics 400
Architecture
Fermi (2010−2014)
Generation 8.0 (2014−2015)
GPU code name
N13P-GLP / N13M-GS
Braswell GT1
Market segment
Laptop
Desktop
Release date
March 2012
April 2015
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 3.0 x1
Boost clock speed
715 MHz
640 MHz
Core clock speed
Up to 625 MHz
320 MHz
CUDA cores
96
-
Floating-point performance
253.4 gflops
134.4 gflops
Manufacturing process technology
40 nm
14 nm
Number of transistors
585 million
189 million
Pipelines / CUDA cores
96
96
Power consumption (TDP)
15 Watt
6 Watt
Texture fill rate
Up to 10.0 billion/sec
7.680
Memory type
DDR3
DDR3L
Maximum RAM amount
1 GB
8 GB
Memory bus width
Up to 128bit
System Shared
Memory clock speed
1800 MHz
System Shared
Memory bandwidth
Up to 28.8 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_1)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.3
Shader Model
5.1
5.1
Vulkan
N/A
1.1.80
3D Blu-Ray
+
-
Optimus
+
-