Radeon RX 550X and Radeon RX 6400 - video card comparison
Passmark - benchmark score Radeon RX 550X vs Radeon RX 6400
Radeon RX 550X
2322
Radeon RX 6400
7778
Radeon RX 550X
Radeon RX 6400
Architecture
GCN 4.0 (2016−2020)
RDNA 2.0 (2020−2022)
GPU code name
Lexa
Navi 24
Market segment
Desktop
Desktop
Release date
December 2018
January 2022
Interface
PCIe 3.0 x8
PCIe 4.0 x4
Supplementary power connectors
None
None
Boost clock speed
1183 MHz
2321 MHz
Core clock speed
1100 MHz
-
Floating-point performance
1,211 gflops
-
Manufacturing process technology
14 nm
6 nm
Number of transistors
2,200 million
5,400 million
Pipelines / CUDA cores
512
768
Power consumption (TDP)
50 Watt
53 Watt
Texture fill rate
37.86
111.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 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