Both of Apple's new MacBooks, the Pro and the regular, will support up to 6GB RAM, up from 4 in the previous versions. 6GB is an odd number for RAM, and you'll have to buy it in an odd configuration – one 2GB stick and one 4GB stick.

Ramjet, the memory and storage supplier, is selling these configurations on its site. A 4BG stick right now costs $600, and a 2GB is $75 |(these will obviously fluctuate as do all RAM prices). These sticks are DDR3-1066 SO-DIMM memory.

We're not sure, however, that this will make much difference to the speed of the MacBook. Apple has recommended for a long time that all RAM be installed in matched pairs, so 6GB should ideally be supplied as two 3GB modules (which isn't possible). Reports over the last few years have said that non-matched pairs don't increase the performance of the machines.

As a faster computer is the whole point of installing extra RAM, we'll be holding off until we see some benchmark tests. And hopefully, that will coincide with my savings hitting the right level to buy a new MBP.

6GB of RAM possible in new MacBook and MBP [ZDNet via MacRumors]

Product page MacBook RAM [Ramjet]

Product page MacBook RAM [Ramjet]