UHD Graphics 620 and Radeon R5 A255 - video card comparison
UHD Graphics 620
Radeon R5 A255
Architecture
Gen. 9.5 (2017)
GCN 3.0 (2014−2017)
GPU code name
Kaby-Lake-Refresh GT2
Topaz
Market segment
Laptop
Desktop
Release date
September 2017
2014
Interface
PCIe 3.0 x1
PCIe 3.0 x8
Boost clock speed
1150 MHz
940 MHz
Core clock speed
300 MHz
925 MHz
Manufacturing process technology
14 nm
28 nm
Number of transistors
189 million
1,550 million
Pipelines / CUDA cores
24
384
Power consumption (TDP)
15 Watt
-
Texture fill rate
27.60
22.56
Memory type
LPDDR3/DDR4
GDDR5
Maximum RAM amount
32 GB
1 GB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
4 GB/s
Memory bandwidth
-
64 GB/s
Shared memory
+
-
Display Connectors
No outputs
Portable Device Dependent
DirectX
12 (12_1)
12 (12_0)
OpenCL
2.1
2.1
OpenGL
4.6
4.6
Shader Model
6.4
6.5
Vulkan
1.1.103
1.2.170
Quick Sync
+
-