Purchased 2080 TI Black late December and installed on Jan 3rd.  Installed new drivers (clean) and ran card for 6 days playing various games and normal windows usage.  Then when I loaded Rise of the Tomb Raider game and I started to get artifacts on the screen. I restarted several times and updated the driver and the issue went away. The next day I started the game The Division and the computer froze with the space invaders artifacts and when I went to restart my Windows was completely corrupt. It would start up could not find M.2 boot drive and Windows would try to repair and it would say unable to repair. I had to eventually format the drive and reinstall Windows. Once Windows was updated and I updated the Motherboard utilities I did a clean install of the Nvidia driver. I would boot the computer and Windows said it could not load the Nivida driver with Windows error 43 "Windows has stopped this device because it has reported problems. (code 43)".  I reinstalled several times and it would not load the driver. I put the old 1080TI card into the system and the Nivida Driver started without issue. I have updated my Motherboard BIOS to most recent version.  1080 TI ran great for all games with no issues with stock settings.   Once I had it running with 1080TI for while with out issue I tried reinstalling the 2080 TI Black and it would boot up with lines through the screen and do the same thing with the device driver.  I called tech support and they were very helpful and RMA the card. 
 
I got the new card and did clean install of drivers and started EVGA precision X1 which loaded new firmware for the RGB lights to see how it was running.  Everything worked fine for normal windows usage. I stopped EVGA Precision X1 and started MSI afterburner to monitor temp, ,etc..  I started playing a game and after about 2 hours it started crashing (PUBG).  I had MSI afterburner running and the temp never went above 70C.   I turned the machine off for the night.  I started the next day and just had the load screen for PUBG and let it run (no game play).  It started crashing after 20 minutes and artifacting with space invaders.  I tuned the power down to 85 % and it still crashed.  I am running two VGA power cables from the power supply and gave great airflow through the case.
 
Called EVGA and they indicated they have to get the old card back before they can RMA this card.  Any thoughts  ? - I put the 1080 TI back in and it runs just fine.  Very frustrating to spend this kind of money and have multiple card issues but understand I am not alone.
 
Rig is the following :
Samsung 960 PRO Series - 512GB PCIe NVMe - M.2 Internal SSD (MZ-V6P512BW)
Corsair Vengeance LPX 32GB DDR4 DRAM 3200MHz C16 Memory Kit
Intel 7th Gen Intel Core Desktop Processor i7-7700K (BX80677I77700K)
ASUS ROG Maximus IX Hero LGA1151 DDR4 DP HDMI M.2 USB 3.1 ATX Motherboard
EVGA SuperNOVA 850 G2, 80+ GOLD 850W, Fully Modular, EVGA ECO Mode, Power Supply 220-G2-0850-XR
Windows 10 Version 1803
 

Update 2/7/19 
Got new card 8 days ago and ran great until last night.  After wrapping a gaming session the system crashed and every time it would start up it would hang, screen would go dark and then pop up with space invaders artifacts all over the screen. Could not even move the mouse because the screen would flash on and off within different parts of the monitor.  Submit another RMA  - this will be my 4th card.  Temps are good and when the cards run they run great no issue.

gregoryv
3rd rma. Doesn't  look good at all. Did you check what memory was on your gpu's (micron, samsung)?

It makes no difference what memory is used.
 
@collisont456  
"this will be my 4th card." You have other issues with your other Hardware or even House Power.
Another "Maximus IX Hero" with the same issues as other are seeing with the RTX Cards, is your Bios Current?
"Called EVGA and they indicated they have to get the old card back before they can RMA this card.  Any thoughts " Request a Cross Shipping but you will have to pay upfront the cost of a new card.
 
It sounds like you have not done a Clean install of the Drivers.
Use Programs and Features and remove all the NVIDIA Drivers
The Run DDU in Safe Mode, this will restart your Computer to Clean up the Drivers.
Then Install Only the Graphics Driver and PhysX Drivers and Nothing Else.
Do Not have PX1 start with the OS and do no OC the Graphics Memory and go no higher than +80 on the Graphics.

Thanks  - I have done DDU and installed new drivers.  Just got my 4th card and now it black screen when starting up.  Every time I have reinstalled my 1080TI without issue and it runs just fine.

That is correct - BIOS screen comes up, log into Windows and then it goes black and with two different monitors it would not come back on.  Moved it to a different PCI slot and did the same thing.
Appreciate the help.

1st card XC Black, got the space invaders artifacts a few hours after benchmarking the card while watching youtube.  Anyone have any idea what exactly is causing these issues?  Surely it's some PCB defect??