I purchased a 2080ti black in February 2019 this was part of a new pc build.
In July 2020  the card stopped working completely.
Black screen and fan spin.
When I removed the card the PC worked as normal.
Evga took it back on RMA and a replacement card arrived, I fitted it and all seemed well.
After six ish weeks the replacement card did the same thing black screen fan spinning.
With the 2080ti removed the pc works fine with a 2060 GPU fitted the pc works.
My question to anyone that can help is should I suspect my pc is damaging the cards and if so how?
Or have I just been unlucky and unlike the support centre operator suggested,
This is a  problem with 2080ti graphics cards and I have had two of them.
Hope someone can help .
 
MB= Gigabyte Aorus Z390 Aorus Master
PSU= Evga 850W supernova G2 Mod Psu
Ram = Corsair CMK16GX4M2B3200C16R Vengeance LPX 16 GB x2
CPU =Intel Core i9-9900K
Monitor =ASUS ROG Swift PG279Q 27" 2K WQHD 165Hz IPS G-Sync 2K Gaming Monitor

I doubt it's your system.  Even though it's completely possible you have bad power ripple/ noise issues in your house wiring , - I have read just way too many 2080ti horror stories of going bad prematurely to rule out that they are just going bad on you . ( of no fault of your own )
 
But definitely contact support if you still have warranty...

Thanks Steve. You've made me feel a bit more confident that it's the card, not my system. Luckily I do have some warranty left and have started an RMA which is a it of a pain if you live in the UK.