Dilettante
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- Joined
- Jun 5, 2022
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While trying to figure out the issues with noise on USB bus, I have realised it might be due to the widely reported fucked-up bad implementation of USB on X570/B550 chipsets.
After a quick study of what's currently available from various factories in CN, I have narrowed it down to the following options.
#1
Based on the D720201 host controller, no external power needed.
#2
Similar, but with the distinctly different layout. Question is which one is likely to provide "cleanest" power supply to an interface.
This one has holes for the radiator, despite the very same chip.
#3
And the last one, with the external power supply via 4-pin MOLEX. Note two different host adapters.
An interesting quote from a seller at AliExpress:
Now the ultimate question: which one will be best for the given purpose? Expert opinions are very welcome.
After a quick study of what's currently available from various factories in CN, I have narrowed it down to the following options.
#1
Based on the D720201 host controller, no external power needed.
#2
Similar, but with the distinctly different layout. Question is which one is likely to provide "cleanest" power supply to an interface.
This one has holes for the radiator, despite the very same chip.
#3
And the last one, with the external power supply via 4-pin MOLEX. Note two different host adapters.
An interesting quote from a seller at AliExpress:
Question 1: Why is power-free better than external power supply?
Answer: External power supply uses wires to connect external 5V to the interface. Voltage loss will occur
through wires. The larger the load, the greater the loss, the more unstable there will be.
The power-free board takes 12V. After voltage reduction, interference removal and voltage stabilization,
the output is stable 5V, and loss compensation is added, so there will be no shortage of power supply.
Now the ultimate question: which one will be best for the given purpose? Expert opinions are very welcome.