160GB 2.5" Hitachi Travelstar 5K160 5400RPM SATA

I would also like to do this at some point in the future. Would there be any warranty issues?

if you look through here there are threads about mbp hdd NOT being cip (customer installable part), but mb is....
as for the upgrade, why not go with something faster then 5400??

Apple says by it self that the Macbook has " user-replaceable hard disk".

The Macbook Pro doesnt have one, according to Apple. So it does really mean that your will void your warranty. I have done quite a lot off HD replacements at Apple Care, and i can promise you, if you have never opened a Powerbook or Macbook Pro, it is not as easy as it looks like. You need some times to use some force, and that is scary to do witch your new beautifull Macbook.

As far i know, there are no 7200 RPM drive witch 160GB space. If you dont use really "HD speed requiering" aplications, then i would advice you to take a 5400 RPM drive. The "slower" drives are not really that slower, and they can have much more shocks. The faster drives are making much more noise, which is really ennoying .

I you are not often using files which are bigger then 1000mb, then you need a benchmark too see the differents between the 7200 and the 5400. Remember, the RPM does not say much, it is all abaut the Read Seek Time and Write Seek Time. There are 5400 RPM drives who are faster then the 7200 ones.

I hope this is helpfull to you.

I have the 160G drive, just installed it a week ago. Its excellent and ALL that space, way cool... The fact that its 5400rpm is fine for now, I upgraded from the 100G 7200 Hitachi drive and this one is not noticably slower and I love having the extra space. Currently its the largest drive available for a laptop and with that size they've already gone to the new perpindiculaar recording technology (PMR). The only issue is that its only 149.X G after the GUID format. Otherwise everything is great. This is he 2nd upgarde I've done and its a snap as long as you follow the directions.

HTH,
Peter

No it will not void your warranty. Your warranty will not cover any damage you do nor will it cover damaged caused by a defective drive. The drive will be covered by it's manufacturer.

2nd what Hardy says

Don't be confused by the 149GB figure. There are two kinds of GB use the big ones and you get small figure. Just like US and Canadian $. You get two different prices and no real difference.