Sorry guys, I was out of town, thank you for all your responses. Yeah I get that 4c/4t is kinda "obsolete" but many many new games are 4c/4t optimized.. so it will last for another year or two I guess before I upgrade to i7-6700k or 7700k... got a great chip here, shame to sell it and upgrade if games are gonna run just fine.. I was little skeptical about near 100% CPU usage as I said.. but I found
where it showed me that it's actually like that for everyone have 4c/4t.. before I had 4c/8t and my cpu usage was in most cases 40-60%, but that was due to Windows showing me results. With 8t, game utilizes only 4t, and it's showing me for example 50% flat usage.. that means that 4t are 100% utilized and other 4t are sitting idle... and I was like "okay, hm, i have room for more, so just upgrade GPU and good to go" , but that was not the case, since 4t are fully utilized I would be getting CPU bottleneck. Correct me if I understood wrongly
Also I found another video, where guy was testing 1x16GB or 2x8GB, now, of course dual channel is better A LOT, but what surprised is that CPU usage on SC was 62%, and on DC it was 54% (saying random numbers but you get the idea) Here is
to that video.
Luckily my MB supports 6th and 7th gen of i3, i5, i7, so there is a room for upgrade.