Post what brands , model, and kernel frequency you guys are running. I'm looking for some spare motherboards but i want something that is stable at 75khz. I have several foxconn m61-pmp. They are my gold standard but impossible to get anymore.

Personally, I'd look at either Gigabyte or ASUS offerings. I dropped Foxxcon many years ago.
Though I will admit that Parallel port is a rarity nowadays, but fitting one via a PCIe slot is possible.

I'd love to hear of someone that has motherboard that will run 100khz.