HD Graphics 620 and Radeon 660M - video card comparison
Passmark - benchmark score HD Graphics 620 vs Radeon 660M
HD Graphics 620
963
Radeon 660M
6474
HD Graphics 620
Radeon 660M
Architecture
Gen. 9.5 Kaby Lake (2015−2017)
RDNA 2 (2020−2022)
GPU code name
Kaby-Lake GT2
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
August 2016
January 2022
Interface
PCIe 3.0 x1
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
1050 MHz
1900 MHz
Core clock speed
300 MHz
-
Floating-point performance
403.2 gflops
-
Manufacturing process technology
14 nm
6 nm
Number of transistors
189 million
13,100 million
Pipelines / CUDA cores
24
384
Power consumption (TDP)
15 Watt
45 Watt
Texture fill rate
25.20
45.60
Memory type
DDR3L/LPDDR3/LPDDR4
System Shared
Maximum RAM amount
32 GB
System Shared
Memory bus width
64/128 Bit
System Shared
Memory clock speed
System Shared
System Shared
Shared memory
+
-
Display Connectors
No outputs
No outputs
DirectX
12 (12_1)
12 (12_1)
OpenCL
2.1
2.0
OpenGL
4.6
4.6
Shader Model
6.4
6.5
Vulkan
+
1.2
Quick Sync
+
-