Work: 550 Mhz PII 64MB ram on my desk. Beowulf cluster of intel 2.4GHz Xeon processors across the hall for big numerical simulations. All run RedHat Linux.
Home: 1.2 GHz AMD Athelon, half a gig ram, GeForce3 (4?) video card. Dual boots to Win-XP and RedHat 7.something.
Everything runs faster on the Pentium II at work, except opening MS Word formatted documents (which I do probably once per month), and except when I boot to Linux at home.
Note however, this only includes the things I do at both places: email, browse web, connect remotely to foreign machines. Much of which relies on internet connectivity, which is very good at work, but rather poor at home (DSL). That said, my home DSL is more reliable then the network here at work. This year, thus far, work has cost me about a week of downtime and home has been about 4 hours.
I was going to reply my limited edition apple II GS, but Joe stole my thunder