DEC750 Questions

[pfry]

[...]I wouldn't update the bios nor install a microcode plugin[...]

I concur, if consensus matters. Although I do update my BIOS, as I use consumer motherboards.

[...]3. Is there any value in enabling HyperThreading? AMD CBS -> Zen Common Options -> Core/Thread Enablement -> SMTEN[...]

It depends on your workload. SMT is generally not detrimental. You could always test it, although conclusive results might be hard to come by.
I leave it enabled on mine, but I use overpowered consumer hardware.

[ProximusAl]

There is something wrong with the web shop.

It created me an account (still no emails about my order), but when I set a password for the web shop it says it's always weak and won't let me set it

Apparently niOpzEY$3Rie`3-G2`TQT6<(bTS1*Ejysu~4{K0v is a weak password.

So neither can I log in to check my order, or had any emails regarding the shipment of my order, only an acknowledgment email.

[Monviech (Cedrik)]

Just contact sales and they will help you. Email is at the bottom of the page

https://shop.opnsense.com/

[ProximusAl]

No response from that email either :(

It's like the shop doesnt have anyone working there.

It let me place an order, and crickets since the order acknowledgement.