Radeon RX 6400 vs Radeon 550X 640SP
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6400 's Advantages
Released 3 years and 9 months late
Boost Clock has increased by 117% (2321MHz vs 1071MHz)
Larger VRAM bandwidth (128.0GB/s vs 48.00GB/s)
128 additional rendering cores
Radeon 550X 640SP 's Advantages
Lower TDP (50W vs 53W)
Score
Benchmark
FP32 (float)
Radeon RX 6400
+160%
3565
Radeon 550X 640SP
1371
Graphics Card
Jan 2022
Release Date
Apr 2018
Navi II
Generation
Polaris
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 3.0 x8
Clock Speeds
1923 MHz
Base Clock
1019 MHz
2321 MHz
Boost Clock
1071 MHz
2000 MHz
Memory Clock
1500 MHz
Memory
4GB
Memory Size
4GB
GDDR6
Memory Type
GDDR5
64bit
Memory Bus
64bit
128.0GB/s
Bandwidth
48.00GB/s
Render Config
12
Compute Units
10
768
Shading Units
640
48
TMUs
40
32
ROPs
16
12
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
256 KB
16 MB
L3 Cache
-
Theoretical Performance
74.27 GPixel/s
Pixel Rate
17.14 GPixel/s
111.4 GTexel/s
Texture Rate
42.84 GTexel/s
7.130 TFLOPS
FP16 (half)
1371 GFLOPS
3.565 TFLOPS
FP32 (float)
1371 GFLOPS
222.8 GFLOPS
FP64 (double)
85.68 GFLOPS
Board Design
53W
TDP
50W
250 W
Suggested PSU
250 W
1x HDMI 2.1
1x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 2.0b
1x DisplayPort 1.4a
None
Power Connectors
None
Graphics Processor
Navi 24
GPU Name
Lexa
Navi 24 XL
(215-135000046)
GPU Variant
Lexa PRO
(215-0904018)
RDNA 2.0
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
6 nm
Process Size
14 nm
5.4 billion
Transistors
2.2 billion
107 mm²
Die Size
103 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.2
OpenCL
2.1
1.3
Vulkan
1.2
6.7
Shader Model
6.4
