T61 13% higher battery drain after bios update when idle ?!

[davidmaier]

I just updated my T61 7664-18G ( Vista32, 3GB, 140NVS) from 1.26-1.06 to 2.19-1.08 in order to improve my cardbus performance. The cardbus transfer rates for my eSATA have increased, but also my battery drain in idle mode has gone up from

avg. 15.5 Watt to 17.6 Watt (this is without eSATA cardbus card installed).

Reverting to 1.26-1.06 lowers the battery drain again, but also my eSATA rates.
I also tried several older 2.x bios releases, but they all show the much higher idle power drain.



Is there any reasonable explanation for this ?

[ssd_thinkpad]

I am curious, too.

[pianoforte]

It might be the fan running more often due to an effort to cool the NVidia graphic cards more intensely.

But thats just guessing.

[Sandstorm83]

It might be the fan running more often due to an effort to cool the NVidia graphic cards more intensely.

But thats just guessing.

I think this is the reason as well. Apparently other notebook manufacturers have updated the BIOS for their machines to do the same after the Nvidia fiasco with regards to failing GPUs.