How much does the 9600GT Affect Battery Life?

[sclough]

Since battery life is all the rage with the new MBP's, I thought I'd throw in another question. How much does using the 9600GT card on the 15" models affect battery life? I'm assuming all the benchmarks out there, even the "cpu intensive" ones are using the 9400M.

 

[Some Guy 555]

With the 9600M GT running I have gotten around 3:30 (3 and a half hours) with HEAVY use (bootcamp, gaming on windows 7RC).

With the 9400M I have gotten around 4:20 (4 hours, 20 minutes).

It's noticeable, but only if you are pushing the system to the limit.