I did the end of my university time (sounds like prison time, ain't it ? ) on a TRS-80 COCO-II hacked up to a whopping 64K ram, running VIP Writer on single side single density 5 1/4 floppies.
I now run an Athlon XP1700+ 256Mb ram, approx 70 Gb HD, GEForce 2 32MB. Screen: Diamond Pro, huge.
I have three fans in my case and it sounds like a jet engine. Darn noise !
In the summer, it overheated. I installed air conditionning in the house and now, it doesn't overheat.
) on a TRS-80 COCO-II hacked up to a whopping 64K ram, running VIP Writer on single side single density 5 1/4 floppies. 
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