Radeon RX 640 and Radeon 620 - video card comparison
Passmark - benchmark score Radeon RX 640 vs Radeon 620
Radeon RX 640
2020
Radeon 620
924
Radeon RX 640
Radeon 620
Architecture
Polaris (2016−2019)
GCN 1.0 (2012−2020)
GPU code name
Polaris 12
Polaris 24
Market segment
Laptop
Laptop
Release date
August 2019
August 2019
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
1218 MHz
1024 MHz
Core clock speed
1218 MHz
-
Manufacturing process technology
14 nm
28 nm
Number of transistors
2,200 million
1,550 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
50 Watt
50 Watt
Texture fill rate
38.98
24.58
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
6000 MHz
2250 MHz
Memory bandwidth
112.0 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.4
6.3
Vulkan
1.2.131
1.2.131
FreeSync
+
-