Lowering fan speed on laptop with Intel chipset

I have a laptop running with Intel i7-2630QM. I know my laptop had worse-than-expected battery life, but I never realized how bad until I installed powertop. Turns out I'm idling at 29W(!). This is even after enabling pcie_aspm=force and the related boot arguments that supposedly improve battery life in Intel laptops.
I think a big part of the problem is my fan, as my laptop has always been particularly noisy. However, I can't figure out which chipset I should be modifying in sensors.conf.
Output of sensors:
acpitz-virtual-0
Adapter: Virtual device
temp1: +57.0°C (crit = +120.0°C)
temp2: +55.0°C (crit = +127.0°C)
radeon-pci-0100
Adapter: PCI adapter
temp1: +55.0°C
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +58.0°C (high = +86.0°C, crit = +100.0°C)
Core 0: +53.0°C (high = +86.0°C, crit = +100.0°C)
Core 1: +52.0°C (high = +86.0°C, crit = +100.0°C)
Core 2: +55.0°C (high = +86.0°C, crit = +100.0°C)
Core 3: +54.0°C (high = +86.0°C, crit = +100.0°C)
Compared with my friends' laptops, I expected to see a line that corresponds to my chipset, but I don't - what line(s) should I expect to modify?
Last edited by chimeracoder (2012-05-24 20:09:43)

Okay, I've half-solved the issue - I turned off the radeon card, and my idle temperature dropped by about 10 degrees. I'm idling at about 18 W now, so I get about an extra hour of battery life (~3 hours). That said, since I could get about 5 in Windows on this computer, I think there's still some room for improvement, especially since the fan is still a bit noisy. (I can't measure it exactly, but to my ear, it sounds like it's running too high given my low temperature of ~45 degrees).
I'm assuming the fan is the number one power draw at this point, so is there any other way that I can get it down without pwm?
Here are the other devices in powertop:
860.6 pkts/s Network interface: wlan0 (iwlwifi)
100.0% Display backlight
9.0% CPU use
0.0 pkts/s Network interface: eth0 (atl1c)
100.0% USB device: usb-device-8087-0024
100.0% USB device: HP Integrated Module (Broadcom Corp)
100.0% USB device: EHCI Host Controller
100.0% Radio device: btusb
100.0% Radio device: iwlwifi
100.0% Radio device: hp-wmi
100.0% Radio device: hp-wmi
100.0% Radio device: hp-wmi
100.0% Audio codec hwC0D3: Intel
100.0% Audio codec hwC0D0: IDT
0.0% USB device: EHCI Host Controller

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