Nice...tell us more about a "supercomputer"

Going from keys on Wednesday to paying off mortgage at 130K...wow.
It totally makes sense to pay off a 6-7% mortgage, though..as long as it's only a portion (or a small portion) of your bitcoin.
The bank will get only several thousand euro from me provided that I pay off my mortgage in less than 2 years. I needed this appartmen for my work this year, and at the same time I wasn't comfortable to sell a big part of my stash. I've sold only what is required from the bank as my personal participation in the deal. Even that was somewhat hurtful for me. My way of thinking is to keep as much of my stash as possible, but when I have the opportunity to change my life for the better like this, I should sell what is needed. Provided that I will keep most of my stash intact.
Regarding the PC, actually it is more like a gaming/office setup with chair, desk, color printer/scanner, ups. The pc will be with the latest components, like cpu intel 14900kf, 192G RAM, 3SSD, Nvidia 4090, water cooled case. The funny part is that the girl from the bank asked a lot of stupid questions for approval of the loan, like "for what will you use the computer?". I said "For checking my email." This answer obviously didn't satisfy her and she went on and on, and I was giving the most ridiculous answers I could figure out.
