Dell :: Warning. Noisy Fan Due To Bad Control. Studio 1745/47/49 And Inspiron 1564

http://en.community.dell.com/forums/t/19315633.aspx
http://en.community.dell.com/forums/t/19313005.aspx

studio 17 fan problems

2nd description:
http://en.community.dell.com/forums/t/19321860.aspx

I've tried to collect all the info I can. Please add as you seem fit.

Recently returned a dell 1745 due to bad fan control. While idling the fan would rew up to max each 3-5 minutes easily detectable by speedfan (see the last link). The core temperatures would slowly ("") increase to around 38 degrees when the fan starts at horrendous pace for ~10-15 seconds and cool the cores to sub-30 degrees and the whole show starts again. This is a showstopper and noone should really by these products.

It is as though the cpu fan only has two paces. Silent and Noisy. There shoudl of course be some kind of gradient in the fan speeds at different temepratures but his has not been implemented though very easy for BIOS coders to do so. The fan vigorously tries to cool the cpu to 30 degrees each time it hits ~40 degress - we're talking intel cpus that could easily go to 60-70 degrees without fuzz.

While idling any laptop should keep a constant temperature - the current lineup of inspirons and studios (at least 1564, 1745, 1747 an 1749) cannot achieve this and unleashes fan hell very often.

Untill fixed (which dell seems very reluctant to) don't buy dell. It's simply not worth it.

This have nothing to do with throtteling. And don't even get me started on doing something "cpu intensive" like browing.