OS: Ubuntu 5.10, Ubuntu 6.04, Fedora Core 4, Gentoo 2006.0 (I mostly use Ubuntu 5.10, the rest are just for experimenting with new stuff)
Mobo: ASUS P4C800 E-Deluxe, northbridge cooled by Zalman N32BK
CPU: Intel Pentium 4 Xeon Foster, 3,2GHz @ 3,8GHz, cooled by Zalman 7700Cu
Graphics card: Leadtek Geforce A6600GT TDH, GPU 500Mhz@ 630Mhz, ram 900Mhz@ 1100Mhz, cooled by Revoltec VGA freezer
Memory: 1024mb DDR400, unoverclocked (shame on me)
HDD: Maxtor 6L300R0, 300GB, 7200RPM
Case: AeroCool Jetmaster Silver (air sucked in by one 120mm fan and one 80mm fan, pumped out by two 90mm fans, all completely silenced)
Idle CPU temp: ~50C
100% CPU temp after 30 minutes: ~65C
Mobo temp: average around 30C, generally never goes above 50C
Graphics card temp: Idle around 50C, max up to 80C