You should be able to play all your current games just fine. Getting a better CPU would help ARMA 3 run smother (ARMA is a CPU hog), but the system is pretty well balanced and upgrading anything would make the rest seem out of place.
To help with streaming to a steam box, you should be focusing more on your network then your computer. See if your router and desktop are gigabit compatible and if you can run a physical network cable to where-ever the steam link will be. Keeping a gigabit connection all the way to the box from your desktop on at least a CAT5e cable will do you more good then anything else. The higher rated CAT cable the better is preferred to keep out interference. A nice shielded CAT6 cable is my personal preference for it.
A stronger CPU might help with streaming out to the box, but we won't know what the actual CPU requirements of the Steam box with be till it's released.
Said steambox, but meant Steam link Sorry for that.
Also missed the VR headset bit. For the headset you'd need a stronger GPU and CPU. As even minor fluctuations in FPS below a consistent 60fps can give you horrible headaches and make you queasy using a VR headset.
Your RAM and PSU are fine (some people will argue about the PSU, but even the high end GTX980 only lists a 500watt as its recommend requirement). If you really want a smooth VR experience, I'd up your CPU to the FX 8350 (your board says it supports it) and your GPU to at least a NVIDIA GTX 950 or AMD R7 370 to maintain a solid 60fps at all times.
Edited by SEANIA, 08 September 2015 - 03:14 PM.
99% of the time, I edit for type-o's and grammar. I'll note it if that's not the case.
I write near essays for most my responses, and then try to condense as best I can to the introduction of one. Less is more. Let me know if I post to much.
I do a lot of spacing for readability. Let me know if that makes my posts seem to big.