I saw those temps up there. Usually your weather comes to us in about 5 days. Don't think we need to warm or flooding will be a nightmare for Minnesota.

Just got a email from Newegg. $499.00 for a 16 core threadripper. Not to bad. Now if the 32 core would drop allot, then I would get excited. Same here on my driveway. Slush now frozen. Will be glad when we are in the 50’s. Looks like 40’s next week.

Bumped it to 12 threads before bed, just to see if it would last the night. Working fine so far. Bumped it up to 18 this morning and see what happens.

Still old PSU. Will give it until end of month to make sure though before buying batteries for the APC. Not cheap. Am back up to 20 threads on the dually now.

I don't know of any really good source which will give you any real money for a system like that. I would peruse Craig's list and see if there are any similar systems for sale. If there are, look to see how for much they are selling and, importantly, how long they have been for sale. If they have been for sale for more than one to two months and have not moved, they are overpriced. There are a couple of used computer stores around St. Cloud which you could call and see if they are interested in purchasing the system, but I would not hold my breath on getting a good price from any of them. If you list it on Craig's List you may just get the buyer you need, but there does seem to be quite a bit of product out there, but not too much high end stuff.
The other thing you might consider is to donate it to a non-profit and take a tax deduction for a charitable donation for its value. I know the Twin Cities has some that might take it. Try here or here.
I might use one of these for some old systems I have I really should get out of my storage areas. They all work, but the electricity they use for the work they get done makes them cost too much for crunching.
Good luck.
Cheers