1) Commodore 64 - 32K RAM, no HD, I think the processor ran at something like 1Mhz
2) Commodore Amiga - 512K RAM (which I expanded to 1Mb!), no HD. Processor ran at 7Mhz! (I think - or was it 14?)
3) PC - Pentium 166MMX, 32Mb RAM, 4Gb HD. CDrom, floopy, 15in monitor