put this together a few months ago, never had a temp problem, but recently i get warnings for high cpu temp. I read up in intel's site, and find an article that says a recent bios update adjusted the fan settings, and the desktop utility may have to be adjusted to set the threshholds. I do so, setting the cpu limit to 65C like suggested and all was fine for awhile. Now i see it again, and when under load im running high 50's to low 60's, idle brings it down to mid to high 40's. I am using this machine for music editing and im not sure if im pushing it too hard, as im mixing tracks with quite a few vst plug ins and virtual instruments. with around a dozen tracks im geting 60 to 85% cpu usage, and may not be adequate computing power for what i really want to do.
Seems to me that months ago i recall the cpu fan winding up faster and quicker, thought i remembered intell desktop utility reporting at idle around 1500 rpm and up to 5500 rpm cpu fan under highest load at times. so i took the case cover off and ducted the cpu fan, tremendous reduction of fan speed. I never ever got a message saying it was running too hot. I still have the case cover off, with my cold air duct on it, and cpu fan runs at 980 rpm when idle, allowing 50+ C temps, and a sudden full load will slowly rise the fan speed to 2200 to 2500 rpm, and the temp rises really fast to high 50's to low 60s'. If i render a song, which puts a full load on the cpu for a time, ill get a temp limit over 64- 65 and fan never breaks 2500 rpm.
So now ive changed BIOS to turn off fan control, allowing full speed all the time. The fan runs at 2525 rpm.
Funny thing is i dont recall updating bois in between these changes. Only when i built it months ago.
Here is my system:
intell desktop board D915GAG
P4 3.2gig, HT, 800mgz bus 2048 kb L2 cache
1.5 gig DDR running in dual channel mode (GEIL matched set of 512's runs hot compared to Nanya set of 256's???)
pny geforce 550 graphics
m audio delta 1010lt audio
250G maxtor sata- Runs hot as well, i gotta be Ubuntu to get the specs tho, Ubuntu crashed
80G WD sata
HP lightscribe drive
heat sink is stock intel desktop board, NEW silver compound, redone twice and yes i know how...
Only 1 case fan, but ive had the side cover off the whole time
power supply is too small i think...
+12v swings from 11.45 to 11.625
+5v is 4.922
+3.3 is 3.317
CPU core is 1.224
CPU I/O is 1.484
win XP SP3 i use Reaper latest version to mix audio... seems to be lightest weight DAW out there...
im guessing your all gonna tell me to upgrade PS and CPU heatsink, but i guess my question is why the fan speed changes, and why is it only recently overheating, and is it just time to go multi core for my audio editing?