LGA 775 fan/power issues
Posted on 2005-03-10
OK you sharp shooters, someone knows something I don’t.
I just threw together my first LGA 775 system, no big deal, I'm not a fan of the new heat sink mounting solution, but whatever. There’s also like a good 1/2mm of slop when you drop that CPU kind of scary if you ask me.
For some strange reason i went ahead and got a boxed CPU, you know, stock heat sink included. Well, the stock heat sink/fan was too loud so i ripped it out and put in an el cheapo thermaltake (low db rating). Anyway, shortly after i put the new heatsink/fan in the system, the user began complaining about the system being real slow. I took a look at his processes and 'system' was using about 15% - 30% of the CPU all the time. A little pstat/pviewer action and i found the culprit to be acpi.sys!? That's when i remembered that the stock heatshink/fan had a 4pin connector as did the mainboard, the new heatsink/fan had the good old 3pin 12v header and since the mainboards 4 pin connector had an offset tab to allow a 3pin to fit neatly, i just assumed the 4th wire was for speed scalability or something not worth worrying about right away. Well, as you may have guessed, putting the old heatsink/fan back in the system cleared up the issue. In the back of my mind i'm thinking there’s a bios setting I’m unaware of but i wanted to see what you guess think.
The board is an Abit AS8.