7200 vs. 5400 RPM power consumption for laptops

[nLinked]

I have a new HP Compaq 6930b. It has a 5400 RPM HDD:

Toshiba MK1655GSX

I have a 7200 RPM HDD I could replace it with as its performance is much greater:

Seagate Momentus ST9160823AS

Will the 7200 RPM one suck up battery life really badly? Does anyone know how to compare their power consumption? The laptop runs Windows 7 in power saver mode. Advice needed. I do prefer performance, but don't want it to take hours off a full charge. I can deal with something like a 20 minute difference in battery life.

 

[MJinZ]

No

 

[nLinked]

No?

 

[Hacp]

No, most companies have figured out ways to get their 7200rpm hds to run at very low power. Some HDds even compete with SSDs in terms of battery life.

 

[SergeC]

It will use a little bit more, but not a large difference for sure. Likely, unless your laptop is a ULV or netbook, you won't even notice.