There is a difference: 2* 1GB DIMMs will make a bigger hole in your wallet OS X IS faster with 1GB than with 512MB. But normally it's not a big difference. Some applications like Photoshop see a real boost with more memory - let's talk about 4GB If your Rev. B has 8 memory slots buy 2*512MB. If it has only 4 slots buy 2*512MB as well.
2/15/04 at 11:14am