AMD Radeon RX 6400 vs AMD Radeon RX 640 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Jan 2022
May 2019
Generation
Navi II
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x4
PCIe 3.0 x8
Clock Speeds
Base Clock
1923 MHz
1082 MHz
Boost Clock
2321 MHz
1218 MHz
Memory Clock
2000 MHz
1500 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
64bit
64bit
Bandwidth
128.0GB/s
48.00GB/s
Render Config
Compute Units
12
10
Shading Units
768
640
TMUs
48
40
ROPs
32
16
RT Cores
12
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
1024 KB
512 KB
L3 Cache
16 MB
—
Theoretical Performance
Pixel Rate
74.27 GPixel/s
19.49 GPixel/s
Texture Rate
111.4 GTexel/s
48.72 GTexel/s
FP16 (half)
7.130 TFLOPS
1.559 TFLOPS
FP32 (float)
3.565 TFLOPS
1.559 TFLOPS
FP64 (double)
222.8 GFLOPS
97.44 GFLOPS
Graphics Processor
GPU Name
Navi 24
Polaris 23
GPU Variant
Navi 24 XL(215-135000046)
Polaris 23 XT
Architecture
RDNA 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
6 nm
14 nm
Transistors
5.4 billion
2.2 billion
Die Size
107 mm²
103 mm²
Board Design
TDP
53W
50W
Suggested PSU
250 W
—
Outputs
1x HDMI 2.11x DisplayPort 1.4a
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.1
Vulkan
1.3
1.2
Shader Model
6.7
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.