Computer Comparison

Hey guys, I’ve got a problem. I have two computers at home, one my dad uses, and my old one. The one my dad uses is acting up and me not knowing the part-by-part setup, I really don’t feel like formatting and finding every device and their drivers. So, which one is better:

(I know I could probably run PCMark or something but only one of the computers have shady internet and I don’t have a USB stick over 64MB.)

Computer 1:
Pentium III @ 1Ghz
512MB SDRAM

Computer 2:
Celeron @ 1.7Ghz
256MB DDR-SDRAM (according to CPUZ…confusing)