Radeon 550X Mobile and Radeon RX 640 - video card comparison
Radeon 550X Mobile
Radeon RX 640
Architecture
GCN 4.0 (2016−2020)
Polaris (2016−2019)
GPU code name
Polaris 23
Polaris 12
Market segment
Laptop
Laptop
Release date
April 2018
August 2019
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
1287 MHz
1218 MHz
Core clock speed
1100 MHz
1218 MHz
Floating-point performance
1,647 gflops
-
Manufacturing process technology
14 nm
14 nm
Number of transistors
2,200 million
2,200 million
Pipelines / CUDA cores
640
640
Power consumption (TDP)
50 Watt
50 Watt
Texture fill rate
51.48
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
6000 MHz
6000 MHz
Memory bandwidth
48 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.4
6.4
Vulkan
1.2.131
1.2.131
FreeSync
-
+