worst or slowest? Slowest would have to be whatever was in my TRS-80 model 4 slowest pc would be the 8088 in my old IBM PC-XT (640k of RAM & a 40MB Hard drive). worst would definitely be the Athlon 650 I had for 6 mos. That POS crashed every day in windows 98/ME/2K, wouldn't install _any_ distro of linux, froze _every_ time I accessed my Kenwood 72X with DMA enabled. the only thing that didn't suck hole about it was that I got it and a gigabyte motherboard for $199 (in Dec. 99). upgraded to my current setup and everything's running (almost) fine.