65W or 90W power adapter?

[mtbiac]

My new T61 just came, but I noticed that they gave me a 65W power adapter. My older T61 was slower and they gave me a 90W power adapter....should I keep the 90w since it charges faster? any harm in doing so? Don't mind the size difference

Thanks

[richk]

They use 65W on machines having integrated graphics. Either adapter will work.

[DarkScythe]

They use 65W on machines having integrated graphics. Either adapter will work.

My T60 with the Mobility X1300 came with a 65W adapter though.. Does this mean I really should be using the 90W one instead? The LCD was a little dim, but I thought that could've been simply the LCD backlight starting to wear, although I suppose if it needed that extra 25W it could cause problems.