Stabilizers + UPS + bp are sold (how to connect the cascade correctly)?

Question

Uninterruptable power source

Various stabilizers and uninterruptible power supplies and power supplies are sold.
How to cascade? by mind. the goal is to protect the home system unit, etc.
(budget 15-30 thousand rubles each)
Does it make sense,
the neighbor has electric welding and the wires on the street short each other, etc.
Stabilizers for 500 watts are not yet expensive, so they are not energy-intensive cpu blue 70v att and gpu green 100 watts each?
Does this make sense both theoretically and practically?
Is there something superfluous in the chain, after all, or not practical?
socket + steelizer + ups + bp?

Answer 1

Line filter + UPS. Will be ok. Small surges will be swallowed by the filter, the rest by the UPS.

Answer 2

Most computer power supplies operate smoothly in the range of 100 to 250 volts, as do monitor PSUs, so a stabilizer is usually not needed.
If all the same, emergency situations are possible, then it will be enough to supply the UPS
with normal UPSs with built-in low / high voltage protection, if anything, they switch to the battery.