HD Graphics 620 and GeForce GT 640M LE - video card comparison
Passmark - benchmark score HD Graphics 620 vs GeForce GT 640M LE
HD Graphics 620
963
GeForce GT 640M LE
720
HD Graphics 620
GeForce GT 640M LE
Architecture
Gen. 9.5 Kaby Lake (2015−2017)
Fermi / Kepler (2012)
GPU code name
Kaby-Lake GT2
N13P-LP
Market segment
Laptop
Laptop
Release date
August 2016
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Boost clock speed
1050 MHz
-
Core clock speed
300 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
403.2 gflops
384.0 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
189 million
585 million
Pipelines / CUDA cores
24
384
Power consumption (TDP)
15 Watt
20 Watt
Texture fill rate
25.20
Up to 16.0 billion/sec
Memory type
DDR3L/LPDDR3/LPDDR4
DDR3\DDR5
Maximum RAM amount
32 GB
2 GB
Memory bus width
64/128 Bit
128bit
Memory clock speed
System Shared
1800 - 4000 MHz
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 (12_1)
12 API
CUDA
-
+
OpenCL
2.1
1.1
OpenGL
4.6
4.5
Shader Model
6.4
5.1
Vulkan
+
N/A
3D Blu-Ray
-
+
Optimus
-
+
Quick Sync
+
-