Sorry if this is a dumb question. Been out of the loop for a while and need help determining if it makes any sense to upgrade this (years) old rig -- or if it's time to just build a new one.
Current setup:
i5-4760k@3.4ghz on a MSI Z87-G41 PC Mate mobo (turbos up to 4ghz during games, I think...)
EVGA GTX 970
8 GB Kingston DDR3
EVGA 750 Watt PS
ASUS PG278Q 144hz monitor
SSD Drive
Did my best when building this back in 2013. (The GPU and monitor were an upgrade in 2015.) Everything still seems to be working fine. However, when playing Far Cry 5 or GTA 5 with Geforce Experience turned on and smoothing out the FPS, the low detail is very noticeable, and I'd like some improvement.
Spending a lot to build a new, high-end system is doable right now -- but if impressive performance upgrades could be had spending less ...? For example, the "best"(?) CPU that fits this mobo seems to be an i7-4790k --at roughly $280. Would it make any sense to spend up to a few hundred on a GPU that pairs well with that CPU -- putting maybe $600 onto an almost 7 year old mobo with DDR3 RAM? Or, would the performance increase not warrant it, and do I instead just put that cash into an all-new system?
Thanks for any advice.
Geoff