aiden_mcmeme

If the CPU crash now and then at this voltage then you can set Vcore to something around +0.224.
And check what your memory is rated for, but I think most kit a rated for 1.35v

I really think the max 24/7 voltage should sit around max 1.4V . 
In most cases you dont need to touch the SoC voltage. Set it to standard again and play with core voltage only. 
Normally should run fine with your current 1.33V @ 4Ghz , maybe you got one of the worse chips. 
To check out Voltage use HWInfo, Cpu-z shows wrong voltage numbers. But you can use CPU-Z Stress to get a quick view on your voltage under full load in HWInfo. Also check the temperature of your Mainboard/VRM's that there is no thermal problem existing. 
I run 1.31V idle and on full load 1.28V so -0.03V , you get kinda the same drop. 
Try increasing Vcore step by step if you need it benchstable, maybe it's enough if its stable for you in every day use. 
Then decide if it's worth it depending on how much Vcore you must run to get 4Ghz stable and how high your temperature goes. 
It'll probably help more to give your ryzen nice 3000Mhz+ Ram. ? 
 
There are also some ratings in the internet about your mainboard that it's not quite the best to OC, and that very often some small things make everything unstabel especially ram related changes. 
 

Which one are you trading it for?
 
 
It should last you at least that many years at 1080p 60fps.. Even in recent titles..

It depends on what games do you play?

5 years should be no problem, unless raytracing takes over
 
Also that's a terrible price

A 1080 Ti shouldn't cost more than what a brand new 2070 is going for, which is around 450~480, so our card would be going for 100 bucks more or less which is a steal for a RX 590... at very least you should only pay back like 300 max and that's still on the expensive side.

for you. If you sell the 590 you can at least get $100 back if not more like $125, so the actual cost is more like $500. A cheapo 2080 costs $700 spanking new, with same non-RT performance and can go RT a lot faster. I wont even consider the 1080ti at this price unless it's some "excellence in engineering" model, say Kingpin edition or HOF edition (though I doubt they would ONLY cost $500, more like $700 if not more for those)

Terrible price.  

If you're just playing at 1080p 60fps why not keep the RX 590?

Doesn't matter if you bought the card, it still have value.
 
To echo a previous poster, keep the 590 for a few more years.  You don't need a 1080Ti for 1080p 60.  It's a 1440p card.
 
 

1080ti at 1080p 60hz, the card it self should be great for another 5~8yrs, pretty much everlasting for 1080p.
but consider its age, especially for high end cards may have more issue on build quality / overheat etc

The motherboard will attempt to match speeds of all the sticks installed.
 
I'd presume you are running at 2666Mhz right now. So when you add the 3200MHz, they will get clocked at 2666Mhz. You could attempt to raise the clock speed, but you would be exceeding the rated speed of your old RAM and would have no guaranteed success with those sticks.
 
You have a few options:
-Take the extra RAM and run at 2666Mhz
-Take the extra RAM and attempt a slight OC on the slower RAM (try like 2800Mhz)
-Sell the old RAM and run the new kit at 3200Mhz, saving the money you got from the RAM for a game or other upgrade in the future
-Sell the old RAM and purchase a new 3200Mhz kit, therefore having more RAM than before and having matched up speeds

I would recommend selling the old kit when you get the new one. Unless you do tasks that actually need more than 16GB of RAM, the hassle you're going to go through trying to get settings that will make the two sets work better together will probably not be worth it. 
 
Mixing kits at best will make the system default to the lower speed kit's settings. At worst it won't boot until you clear CMOS and set timings manually that both sticks can run at the same speed at. 

if you mix memory speeds, you might not be able to get the speed of the high speed kit because the low speed one can't go as fast even if you overclock yourself.

It probably wont post if the speeds dont match up.