InputLagger wrote: ↑14 Nov 2021, 18:40
Its obvious, but I dont think so. If this is was true, then everyone would have this problem. But only small percentage affected (even small if we adds people, who don't acknowledge about their problem)
They already do. There are high end computer power supplies that rejects more interference. But see below.
InputLagger wrote: ↑14 Nov 2021, 15:38
Why PSU manufactures still can't fix issue with electricity that topic starter have?
They do, but you sometimes have to pay 3x for the good PSUs than the ones that don't filter much bad electricity. It's very expensive to filter more EMI.
There's a lot of possible EMIs and sometimes it just isn't possible to cheaply (e.g. less than 4 or 5 figures) fix certain kinds of EMI.
Interference actually comes in more total possible weird combinations than the number of atoms in the known universe.
Sometimes the tech to filter a specific kind of EMI costs only $1. In terms of strengths, frequency, frequency combinations, directions, over the air, over the wire. Truly. So it's just not possible to completely filter EMI. There might be 6 different kinds of interferences occuring concurrently and most of it may be 99% filtered.
Sometimes inteference is so powerful (like a nuclear bomb EMP), others are weak (like the pulse from a scanning microscope tip). It is truly an astounding number of orders of magnitudes between the extremes.
A person's interference may be coming from a large motor of an air conditioner under your apartment tower floor (mechanical floor), in a field 100x stronger than your refrigerator motor. That sort of stuff is unfixable by playing with your specific apartment's circuit breaker panel, as an example. Or maybe it's that big-ass power transformer 1 meter outside behind the computer room's wall. Etc. A PSU won't fix over-the-air inducted interference that jumps the PSU gap.
EMI can be injected directly into your computer's innards, skipping the PSU!
So you can only do your best. An upgraded PSU can help reject more interference, yes. But there is never a 100% perfect EMI shield. A supernova or a nuclear EMP. A weaponized EMP pulse (like nuclear bomb) is quite "loud", enough to damage electronics. Some supernovas that occur near the planet will also do the same. It will inject interference pretty strong EMI that that is guaranteed to overcome the best PSU filters. But even merely living under a multihundred kilovolt power transmission line only meters above you, can still partially doom your computer's performance. Or that mechanical floor. Or a neighbour's malfunctioning appliance. Etc.
Metaphorically EMI covers more decibels of loudnesses than the difference between a 10db sound and 150db sound. Sometimes invisible interference is so "loud" it just overwhelms the best PSU. Interference has WAY MORE LOUDNESSES than sound does.
Interference also destroyed part of Quebec's electric grid in 1989 from the large CME (Corona Mass Ejection event). Auroras were quite visible even as far south as New York City. We don't consider this as "EMI" but it's a form of EMI from the perspective of a computer, but it's an example of how "loud" EMI can become.
A lighting bolt hitting the top of your house and going through your electricity wire is also a brute EMI. That'll still kill a PSU.
Now, imagine a PSU trying to handle goldilocks powerful EMI -- interference powerful enough to disrupt things but not kill the computer. That's when a computer gets input lag from EMI, from all those error-correction events going on (lagging things).
There's no way to completely EMI-proof a power supply. That would also be lightning-proof and nuclearbomb-proof and also gamma-raybust-proof. You can only build stronger electronic armour, but a force strong enough will overcome it anyway. Pony up for stronger armour (filter), but it will never be perfect armor.
Now, obviously, I'm giving brute interference examples. But there's a lot of invisible powerful interference weaker than a lightning bolt but stronger than a nearby WiFi access point. EMI comes in way more loudness levels than sound does.
TL;DR: Not all EMI solutions fix all EMI problems. And better power supplies already reject more interference but can never be perfect.
:):) if I was a billionaire I would have gotten rid of a few million as a thank you. It's beautiful that you had the idea to share your experience.
Thanks for clarify !
