Re: Power consumption HZ100, HZ250, HZ1000: new numbers

From: Pavel Machek
Date: Sat Jul 30 2005 - 05:11:27 EST


> I was finally able to get C3 state working. It seems that my BIOS is
> leaving USB controllers in an active state(?). Without any USB drivers
> loaded, C3 is not possible. With drivers loaded, but no device plugged
> in C3 works fine. Kernel is 2.6.13-rc3-mm3 + acpi-sbs.
> With working C3 there are indeed differences:
> Voltage is 16.5 V
> HZ=100: ~460 mA => 7.59 W
> HZ=250: ~468 mA => 7.72 W
> HZ=1000: ~494 mA => 8.15 W

0.55W difference, wow. And that's 7% difference to overall system
teflon -- maybe it is a trademark, but it should not be.
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