Actually, mahaba pa lifetime ng mga electronics natin. Anything that runs DDR3 will still be relevant for at least 5 more years. By that time, nakaipon ka na para sa mas maayos na system.
Pero it all depends on your budget and how much you're willing to spend.
Ako, personally, I built a PC with these specs for these prices:
i5-3470 approx Php 2,000
Asus 3rd gen Mobo Php 1,700
16gb DDR3 (4x2) Php 2,800 (@1,400 each)
120 GB SSD Php 1,000+
Inplay 600W RGB PSU Php 1,700
Inplay Meteor 01 Case Php 960
Palit GTX 1050 ti Stormx Php 3,500
Recycled my SATA cables and HDD from my old system.
Kayang kaya ng high settiings sa popular multiplayer games (Valorant, CSGO, etc)
If di ka naman maglalaro ng AAA titles, pwedeng pwede na to.
Just to see how an i5 3470 compares to popular options today