- dont go SLI/crossfire
- dont upgrade
PC upgrading is similiar to poker, you have take into consideration the POT ( what perf. gain your looking at ), and the investment ( money you will put in ).
Example:
-If your current build gets 40fps in arma3 and is worth lets say 1000eur ( top of my head, just for example )
-Build that you want will get 50fps in arma 3 and the upgrade cost is 500eur ( top of my head, just for example )
-What you gain here is 10fps, which equals to aprox. 25% performance boost, so the upgrade to be worth it, should be around 25% value of the current build. 25% of 1000eur = 250eur. If you can upgrade it to the desired performance using this method, than its mostly OK.
But my life rule is not to upgrade, cause the biggest difference is mostly in static tests, that have nothing to do with actual ingame performance. Dont upgrade your PC coz of bad coding on the developer side.
I run a i7 4770K & 780gtx ti, arma 3 = 50+ fps, cs:go 500+ fps… 
I have already made peace that I will never play arma 3 at 100fps, let alone be able to go 3D. But when this pc reaches its second birthday I will invest aprox. 200eur on cooling and overclock it until it starts screaming at me to stop. Than use it for another year, sell it and start from scratch.
You can never keep up with the technology, I burned my self on monitors, ran a 24" dell IPS, wanted more, bought a second screen ASUS 24" 144hz, saw the diff side by side, sold the dell and the asus for my current 27" BENQ 144hz, reflashed the firmware to v2, strobelight, bla bla bla etc. all was good, until nvidia annouced gsync… GGWP
When people ask me: "what PC should I get ?" I usually reply: "raspberry pi" and they walk away.
Another example
day 1: buy laptop for 600eur, getting to know it
month 1: finnaly got to know it good enough now lets do some work
year 1: wow now I really know how to use my laptop to the max.
lets put that in money value:
day 1: laptop is worth still 550eur
month 1: worth 450eur
year 1: maybe you will get 250
now lets see what I would do:
day1: raspberry pi
month 1: i maxed out the capabilites of the PI and need to upgrade
month 1: buy used laptop
month 6: buy another used laptop
year 1: get the laptop.
value of this:
day1: raspberry pi aprox. 50eur
month 1: used laptop 150 eur
month 6: used laptop another 250 eur
year 1: 600eur
What i am trying to say, or was trying im lost as well as you are probably right now, but use your hardware to the MAX !
Once I see my gpu or cpu be at the 70% usage levels I will start looking into an upgrade. Hardware is built to be used, your cpu has not broken a sweat in 5 years at maybe 30% usage… run it another year overclocked and enjoy the money saved.
Dont think of this to be 100% accurate in anyway, its just my experience and my point of view, maybe it will help you decide. In anyway dont go too hard Its usually best to wait it out, I waited a long time for my PC ( had a hp probook 17" laptop before this pc, I overclocked that i3 like it was no tommorow added a custom CPU cooler over the laptop, used a usb keyboard etc… it was a mess but man i went from cs:go being 40-60fps unplayable to a stable 80fps playable. And I learned everything there is regarding laptops, now I clean laptops as a side job
There is one thing that i dont like regarding you PC, its the led’s, if your gonna overclock, loose the bling you need as stable of a power suply as you can get, corsair is good, but i personaly would give my upvote to XFX. Also again your using a 850w psu… @ maybe 50%, there is also some science regarding the PSU’s and im not currently that well informed, but if im not mistaken, PSU’s work best when @ 80-90load something… power loss or something.
I have written this wall of text expecting someone to read it and correct me if I was mistaken in anyway. I will apreciate any advice as well. Best regards.
Fenix out
. so also , there if you are over 85% , it’s no brainer, the thing just starts heating up, but that’s still ok.