Radeon RX 550 and Radeon RX 640 OEM - video card comparison
Radeon RX 550
Radeon RX 640 OEM
Architecture
GCN 4.0 (2016−2020)
GCN 4.0 (2016−2020)
GPU code name
Lexa
Polaris 23
Market segment
Desktop
Desktop
Release date
April 2017
April 2020
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
1183 MHz
-
Core clock speed
1100 MHz
1295 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
51.80
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
7000 MHz
6 GB/s
Memory bandwidth
112.0 GB/s
96 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DisplayPort 1.4a, 2x mini-DisplayPort 1.4a
HDMI
+
-
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.1
OpenGL
4.6
4.6
Shader Model
6.4
6.7 (6.4)
Vulkan
1.2.131
1.3