A few thoughts that I have about my hardware are:

- I wonder how many other people use Nvidia graphics cards on FreeBSD and on Linux.

- A few years ago I used to mine crypto on my graphics card. I made like $20 from it, so if the graphics card is physically in bad shape and this is what caused it then gg on my part for ruining a ~$390 graphics card in order to make about $20.

- The PSU is probably the oldest component in my computer. In fact I think the store I bought it from has been shut down for many years even; that's how old that PSU is. Could it be supplying my computer with bad quality power? Maybe.

- My RAM is of the non-ECC variant. Could cosmic rays be to blame for the crashes? ¯\_(ツ)_/¯ The BOFH would certainly have said that this was the reason, but even in the real world it could be maybe?

> Nvidia graphics cards on FreeBSD

Many it's official supported

>A few years ago I used to mine crypto on my graphics card

Mining does not damage your card

>My RAM is of the non-ECC variant.

Make a extensive memory check like memcheck+

>The PSU is probably the oldest component in my computer.

Here i would bet is your problem, if the ram is ok, no CAP has a bubble and your computer is dust free then it's to 80% your PSU

>>A few years ago I used to mine crypto on my graphics card

> Mining does not damage your card

Mining certainly does not damage the card, however i'd check the cooling. Overheating might be a problem, and mining means that the card is working at 100% of its capabilities for long times (instead of the usual/occasional gaming session).

> no CAP has a bubble

could you please tell me what that means ? I googled "CAP bubble computer" and the results were unrelated.

Looks like that:

https://www.soundonsound.com/sound-advice/pc-notes-16

They were referring to if there was any bulging on any of the capacitors on any of the components in the computer.

ah thanks I wasn't sure what CAP meant now it's all clear.

A'ight thank you, I will try a memcheck and if the memcheck looks ok I will save up money for a new PSU.

If you have a Friend that is good in electronic he can have a look into your PSU...they have Capacitors too (bulging), but the PSU is really NOT a playground..you don't want to light your house on fire.

You are referring to the 'capacitor plague' as Wikipedia calls it?

Can happen to any capacitor when it's over his lifetime at a certain temperature, but at the capacitor plague time they died much before the expected lifetime.