Today I've been messing with my first AM2 system in about 10 years - my first "own" (as in non family) PC.
I was going to make an Oddball PC - Athlon II x3, 5GB of RAM, an ATI 4830, using an motherboard with an usual layout, stuffed in a tiny Tiny PC case, but I've been having loads of issues with software installing, and it runs very hot! Windows 7 is rapidly becoming a pain to use (more so than XP and 10) with software (e.g. display drivers) needing VCredist which needs Service Pack 1 which needs the Windows Update to be functioning which needs various updated to be applied manually otherwise WU will just say searching forever which needs downloading through a browser which barely functions because the build in certificates in Windows 7 are not up to date / sufficient in some way so I get privacy errors everywhere (which is fixed through an Windows Update update).
Then the display drivers were flipping my resolution to 768*1024 (which my monitor did a marvellous job at displaying with no stretching or anything) even with display drivers installed. I had 1440*2560 going at one point which my monitor really struggled with, squishing pixels everywhere.
Eugh. I think I'll just dump XP on it and not use Steam, which is a shame as I think the CPU will have more grunt than my XP / DVD game collection will know what to do with.

(downgraded to 4GB RAM incase the 5Gb was causing the issues)