Haak

ill do that. a funny thing though is that stress test did not reliably manage to cause the crashes to happend. have been testing with cinbenbench r20, 3d mark and heaven. And only 1 time did heaven fail when i was testing undervolting performance.

Well considering how poor value the top en cards are, why wouldn't you just buy a 3080 and up to a 4080 when the time comes for the price of 1 3090 today. Its not like you are going to need the 3090s performance on 1440p within a year. This will save you money and give you options in the future.

The crashed people have been experiencing with the 3080s might be due to cheaper caps, watch for more context. 
 
The question now is what caps are on what boards. Regarding Asus Tuf there seem to be a mismatch between the pictures on retailer sites and asuses own site/ what we see in videos, thus making it harder to figure out what is correct. 
 
The official asus site have these pictures with the good caps that is not associated with crashes. 

On the retailers site the pictures with the caps that might be causing the problems (keep in mind that the problem has not been confirmed by all AIBs, at least not what is causing it)

So with this miss match between marketing from retailers, asuses own site and the review samples it would be really helpful if the owners of the 3080 tuf could take a picture of the backside of their card to confirm what caps have been used on the cards that went on sale. 

Again. It is not confirmed that this is whats causing the crashed. But with the limited knowledge we have atm it seems to be the most likely. 
 

Buy the one you want the most from a reputable store were you have the option to return the card if reviews shows poor performance or other problems. Reviews on the 3rd party cards will be out shortly so you will know soon enough. However this only works if you can manage to NOT open the card to make sure its easy to return without any problems.