AC-DC PSU vs PSU with DC-DC Converter(+5V USB/PS2)

Separate area for niche lag issues including unexpected causes and/or electromagnetic interference (ECC = retransmits = lag). Interference (EMI, EMF) of all kinds (wired, wireless, external, internal, environment, bad component) can cause error-correction latencies like a bad modem connection. Troubleshooting may require university degree. Your lag issue is likely not EMI. Please read this before entering sub-forum.
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This subforum is for advanced users only. This separate area is for niche or unexpected lag issues such as electromagnetic interference (EMI, EMF, electrical, radiofrequency, etc). Interference of all kinds (wired, wireless, external, internal, environment, bad component) can cause error-correction (ECC) latencies like a bad modem connection, except internally in a circuit. ECC = retransmits = lag. Troubleshooting may require university degree. Your lag issue is likely not EMI.
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hejonar
Posts: 31
Joined: 17 Jan 2019, 08:31

AC-DC PSU vs PSU with DC-DC Converter(+5V USB/PS2)

Post by hejonar » 27 Dec 2022, 12:38

Greetings

In terms of mouse/keyboard lag, I was wondering would it matter if old AC-DC PSU with three separate rails for +3.3V/+5V/+12V be paired and tested against new PSU with single 12V rail and DC-DC Converter that converts +12V to +3.3V/+5V? I'm not sure how DC-DC Converter works in modern ATX PSU's, but USB mice and PS2 keyboard are both on +5V and on older AC-DC PSU's they had their native power rail. I wonder does it affect USB/PS2 responsiveness and Voltage stability. Could anybody elaborate?

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