Question Need some clarity on PSUs and pure sinewave UPS

[kellar]

Indian here.
My UPS stopped working past two days and thinking of getting a new one. While going through the reviews i found things like active PFC and sine wave etc., which i'm not so much into it.
My current PC setup is lets just say old like 6-7 years old with 450Watts zebronics PSU (https://www.amazon.in/Zebronics-450...bronics+PSU&qid=1557981911&s=computers&sr=1-3)
Since i'm planning on upgrading my PC in nearby future with estimation of around 70-80K. Will it be okay if i get a pure sinewave UPS and use with my current old setup so that i can reuse the same once i upgrade it later.
"Will pure sinewave UPS support a non-active PFC powersupply?"
I don't want to waste money in getting a 2k PSU now and again a 6K PSU later.

P.S: suggest some good UPS if possible.

 

[cin19]

Just recommend to don't buy that PSU, add more budget, buy a good brand PSU.

Recommend to read more info, before you buy the PSU.
1) PSUs 101 https://www.tomshardware.com/reviews/power-supplies-101,4193.html

2) Picking The Right Power Supply: What You Should Know https://www.tomshardware.com/reviews/psu-buying-guide,2916.html

3) Otherwise, buy that PSU, and also a Fire Extinguisher too.

4) There is more info from other site. http://www.realhardtechx.com/index_archivos/PSUReviewDatabase.html