Radeon RX 6400 vs Radeon RX 8800 XT
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 16GB VRAM Radeon RX 8800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6400 's Advantages
Lower TDP (53W vs 220W)
Radeon RX 8800 XT 's Advantages
Boost Clock has increased by 5% (2430MHz vs 2321MHz)
More VRAM (16GB vs 4GB)
Larger VRAM bandwidth (624.1GB/s vs 128.0GB/s)
3328 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6400
3565
Radeon RX 8800 XT
+458%
19910
Graphics Card
Jan 2022
Release Date
Unknown
Navi II
Generation
Navi IV(RX 8000)
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 4.0 x16
Clock Speeds
1923 MHz
Base Clock
1295 MHz
2321 MHz
Boost Clock
2430 MHz
2000 MHz
Memory Clock
2438 MHz
Memory
4GB
Memory Size
16GB
GDDR6
Memory Type
GDDR6
64bit
Memory Bus
256bit
128.0GB/s
Bandwidth
624.1GB/s
Render Config
12
Compute Units
64
768
Shading Units
4096
48
TMUs
256
32
ROPs
96
12
RT Cores
64
128 KB per Array
L1 Cache
128 KB per Array
1024 KB
L2 Cache
4 MB
16 MB
L3 Cache
64 MB
Theoretical Performance
74.27 GPixel/s
Pixel Rate
233.3 GPixel/s
111.4 GTexel/s
Texture Rate
622.1 GTexel/s
7.130 TFLOPS
FP16 (half)
39.81 TFLOPS
3.565 TFLOPS
FP32 (float)
19.91 TFLOPS
222.8 GFLOPS
FP64 (double)
622.1 GFLOPS
Board Design
53W
TDP
220W
250 W
Suggested PSU
550 W
1x HDMI 2.1
1x DisplayPort 1.4a
Outputs
1x HDMI 2.1a3x DisplayPort 2.1
None
Power Connectors
2x 8-pin
Graphics Processor
Navi 24
GPU Name
Navi 48
Navi 24 XL
(215-135000046)
GPU Variant
Navi 48 XT
RDNA 2.0
Architecture
RDNA 4.0
TSMC
Foundry
TSMC
6 nm
Process Size
4 nm
5.4 billion
Transistors
Unknown
107 mm²
Die Size
Unknown
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.2
OpenCL
2.2
1.3
Vulkan
1.3
6.7
Shader Model
6.8
