Radeon RX 550X 640SP and Radeon RX 6400 - video card comparison
Radeon RX 550X 640SP
Radeon RX 6400
Architecture
GCN 4.0 (2016−2020)
RDNA 2.0 (2020−2022)
GPU code name
Baffin
Navi 24
Market segment
Desktop
Desktop
Release date
April 2018
January 2022
Interface
PCIe 3.0 x8
PCIe 4.0 x4
Supplementary power connectors
None
None
Boost clock speed
1071 MHz
2321 MHz
Core clock speed
1019 MHz
-
Floating-point performance
1,371 gflops
-
Manufacturing process technology
14 nm
6 nm
Number of transistors
3,000 million
5,400 million
Pipelines / CUDA cores
640
768
Power consumption (TDP)
60 Watt
53 Watt
Texture fill rate
42.84
111.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
6000 MHz
16 GB/s
Memory bandwidth
96 GB/s
128.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenCL
2.0
2.2
OpenGL
4.6
4.6
Shader Model
6.4
6.6
Vulkan
1.2.131
1.3