While I'm not much of a gamer, my old I5-760 (1st Core I-Series). could handle everything I threw at it until I tried VR. The ONLY reason I updated to my current Ryzen 5 2600 was for dipping my toe into VR. I'd say your current is probably good for several years (more if you don't mind turning down settings).
-Wolf sends
First generation intel (Lynnfield) is still fine, but with i3 and i5 there can be problems with VR. If you still have the old system upgrading to xeon, for example x3470 (4 core 8 thread) makes it still a good choice. Westmere architechture (first generation too) is even better even when its more than decade old, these where the first 6 core 12 thread processors.
Currently i have two systems both for gaming:
- Lynnfield x3470 (4core 8 thread) overclocked to 4.3ghz with 980ti and 16gb ddr3 ram running at 2400mhz CL9
- Westmere x5675 (6core 8 thread) overclocked to 4.4ghz with gtx 670 and 16gb ddr3 ram running at 1866mhz CL8
I have no problems running csgo at 300fps 1080p, compared to alot newer ddr4 systems i feel like mine runs even smoother, ddr3 is very underrated since you can get VERY low timings.
Only issue is that these need good cooling solution, after that you can apply alot more voltage on 32nm / 45nm chips than the newer generations (14nm or less)