oh yeah and an open case doesnt neccasrily mean good airflow, i have 2 fans sucking air into the front of my case,1 normal case fan on the front bottom and a modified 5 1/4 hard drive cooler taking a slot that has 3 fans that suck air in, plus 1 fan blowing aire out the back, plus my 400 watt power supply has 2 fans on it: 1 that blows air into it and one that blows air out the back of the power supply, in addition to a grill above my geforce 3 to allow air to enter/exit it if need be and to help keep my case temps down
i have so far ran my XP 2100+ at 1833mhz and 1.85v and the highest temp under load ive gotten was 54c, then again my heatsink is a coolermaster HHC-001 with heatpipes and the fan runs more than 7000 rpm according to my bios and SANDRA