PSU with power surge and brown out protection..

All computer PSUs must have that feature. As made obvious by ATX standards. For example, a computer must work just fine when voltage drops so low that incandescent bulbs dim to 40% intensity. Surge protection has been standard inside all appliances long before the PC even existed.

Your concern is a rare transient (maybe once every seven years) that can overwhelm that standard and existing protection. Nothing adjacent to an appliance claims to protect from that type of anomaly.
 

UPS has one obvious purpose - temporary and 'dirty' power so that unsaved data can be saved. UPS does nothing to protect hardware. Claims for hardware protection 'vaporize' once we include its 'near zero' specification numbers.

Most are educated by hearsay and advertising. So most (including so many computer techs) do not even know of many functions already performed inside a PSU and even defined by ATX Standards. Many computer techs and computer assemblers recommend using subjective 'tiers' or a useless 'watts' number rather than by citing manufacturer specifications.

For example, others said you need a maybe 600 watt power supply. So your computer is so hot that it can also toast bread? Of course not. Since so many computer techs and assemblers have no idea how electricity works, then we tell them they need a PSU that is at least double what is really required. Then we need not teach them basic electricity concepts.

Again, what did you hope that UPS does? What did others tell you it will do? Why did they not provide numbers with each recommendation?
 
Again, UPS has one obvious purpose - temporary and 'dirty' power so that unsaved data can be saved. Brownouts and blackouts do not damage hardware or saved data.

'Graceful' is a subjective term. Says nothing useful.

Some food is recommended for a 'healthy heart'. Also subjective. That food does not kill a heart - nothing more. Subjective claims are almost useless.

UPS has one function - temporary and 'dirty' power so that unsaved data can be saved. If it does more, then a specification number that says so can be cited. Those are not subjective.
 
okk thank u very much... and can u tell me as to vibrations damage pc parts? my pc is bear to bed sometimes when i move my leg accidentaly hits the table which causes table and pc to vibrate..