I guess it depends on what you are using your MB for. If you multitask heavily between resource consuming programs, then it's best for you to invest straight on 2x2GB.

But if you want to test the water out and go with the cheaper option of 2x1GB, then go ahead as you can always sell the old RAM to upgrade. But get at least 2GB of RAM la, now a days, 1GB is like nothing

And yeah, you won't void the MB's warranty by upgrading your RAM. You can't even void it by upgrading the HD yourself.

You got 3GB on your MB? That means 1x2GB and 1x1GB right?

I've read from Apple and other sites saying that it is best to not mix and match RAMs. The best is to stick to 2 of the same type. Not really sure though :\ Did your 3GB RAM choice give you any problems before?

There won't be any problem since your MB (I assume it's MB) could support 3GB.

Hmm..good question. It depends on the memory ratio of the Santa Rosa chipset.

If FSB:memory ratio is high, then it might accept up to 1250 MHz (does it go that high?). But expensive like crap though.

But the chipset should be able to accept 800 MHz. It is possible for a chipset's memory ratio to go below the FSB? Like 5:4 or something?

butthead: The new Santa Rosa chipset recognises 4GB of RAM memory

And no, you don't need to remove 20+ screws before reaching the HD for MBs. Just take out the L-bracket and voila! The HD flap is there for you to pull (sauce that opens in Acrobat Reader)

llamasonic: Refer to my post #17 on page 1 for your answer about the 800 FSB:MHz ratio