When you Raise the Voltage to Increase stability @ a Give OC ... you create more stress on the silicon
High voltage & "leakage" creates Heat Very quickly if you push too hard
The small nm dies have been known to fail with too much voltage pushed for too long
Also, More Voltage is Not always a better OC ... Nvidia Boost 4.0 has the last word & starts down clocking the MHz around 40C on my EVGA 2080 Ti(s)
You need to find that sweet spot for your Rig
Silicon lottery ..... they are all a little different
Slide your Temp & Power Limit full right with +0 MHz for GPU & RAM - then 100% all fans including your case fans .... note room temp & Card temps while testing. Run a benchmark 3 or 4 times to stress the PC .... What is your MHz seen while benchmark is running ... this is the baseline ... all Nvidia Boost 4.0 at work,
Now, nudge the GPU a little & test for stability ... once you find the edge of stability ... back down 10% ... or add a little voltage to get back stability
Note that GPU MHz decreases as it gets warmer
After Max GPU stability is found then start on the RAM
Plan on keeping your Card for more than 3 yrs .... checkout the EVGA Optional Warranty if you just bought your card
EVGA Extended Warranty