Radeon RX 550X and Radeon RX 640 - video card comparison
Passmark - benchmark score Radeon RX 550X vs Radeon RX 640
Radeon RX 550X
2322
Radeon RX 640
2020
Radeon RX 550X
Radeon RX 640
Architecture
GCN 4.0 (2016−2020)
Polaris (2016−2019)
GPU code name
Lexa
Polaris 12
Market segment
Desktop
Laptop
Release date
December 2018
August 2019
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
1183 MHz
1218 MHz
Core clock speed
1100 MHz
1218 MHz
Floating-point performance
1,211 gflops
-
Manufacturing process technology
14 nm
14 nm
Number of transistors
2,200 million
2,200 million
Pipelines / CUDA cores
512
640
Power consumption (TDP)
50 Watt
50 Watt
Texture fill rate
37.86
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
6000 MHz
6000 MHz
Memory bandwidth
96 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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
-
+