I have - I've been building custom computers for quite a while now. My last "name brand" desktop was a CTX (ever heard of them?
) back in like 1999 - it was my first computer (but not our family's first computer). Eventually the motherboard went out. Rather than buying a new computer, I got a new motherboard (ASUS, which I continue to use exclusively to this day), and thus it began.
My current HTPC is based around a Silverstone case and runs Windows Media Center which I have piped to Ceton Echos around the house. I don't recall the specs off hand but it's pretty beefy (as it needs to support concurrent Ceton Echo connections). I've always focused on low power usage and quietness, so usually my builds always try to move in this direction.
My current gaming rig is a Sabertooth ASUS mobo with 2 GTX670's in SLI with a bunch of other stuff. Starting to age a bit but still churns through current games nicely.
Many years ago (like back in 2007 I think), I made this computer (the "case" is scratch built from wood) for my dad - he's really into trains - using a Mini-ITX mobo before they were mainstream/cool. The stupid mobo alone was like $350 - and it wasn't a gaming mobo or super performance or anything. Pretty run of the mill, just small.
Notice the parallel port (for a printer, if you don't know what a parallel port is) and the PS/2 ports for mouse and keyboard - that's how old this thing is
Size comparison. Rocking the CRT monitor back in the day!
The hardest part about this build is back then the mini-ITX stuff wasn't common. It was more for rugged environments and government/commercial applications. So finding all the parts was either difficult and/or expensive. But it was a fun build.
It's time for a new computer for him. Building the computer part will be cake now because of the availability of parts. We both love Dr. Who, so I'm going to make him a new computer/case modeled after the TARDIS, which I will scratch-build from wood as well. That will be a fun project