AMD Radeon RX 6400 vs AMD Radeon RX 6800
GPU Specs Compare
Graphics Card
Release Date
Jan 2022
Oct 2020
Generation
Navi II
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x4
PCIe 4.0 x16
Clock Speeds
Base Clock
1923 MHz
1700 MHz
Boost Clock
2321 MHz
2105 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
4GB
16GB
Memory Type
GDDR6
GDDR6
Memory Bus
64bit
256bit
Bandwidth
128.0GB/s
512.0GB/s
Render Config
Compute Units
12
60
Shading Units
768
3840
TMUs
48
240
ROPs
32
96
RT Cores
12
60
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
1024 KB
4 MB
L3 Cache
16 MB
128 MB
Theoretical Performance
Pixel Rate
74.27 GPixel/s
202.1 GPixel/s
Texture Rate
111.4 GTexel/s
505.2 GTexel/s
FP16 (half)
7.130 TFLOPS
32.33 TFLOPS
FP32 (float)
3.565 TFLOPS
16.17 TFLOPS
FP64 (double)
222.8 GFLOPS
1010 GFLOPS
Graphics Processor
GPU Name
Navi 24
Navi 21
GPU Variant
Navi 24 XL(215-135000046)
Navi 21 XL(215-121000187)
Architecture
RDNA 2.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
6 nm
7 nm
Transistors
5.4 billion
26.8 billion
Die Size
107 mm²
520 mm²
Board Design
TDP
53W
250W
Suggested PSU
250 W
600 W
Outputs
1x HDMI 2.11x DisplayPort 1.4a
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Power Connectors
None
2x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.2
2.1
Vulkan
1.3
1.3
Shader Model
6.7
6.5
📊 Benchmark
3DMark Time Spy
-
16,182
3DMark Time Spy Extreme
-
7,771
3DMark Speed Way
-
3,062