I just put an order in for a new 24" iMac on order (YEAH!!!). To save a couple of bucks, I thought I'd install my own RAM. Here's the question: Apples specs keep referring to PC2-5300 (667) DDR2 200-pin SO-DIMM but everything I keep finding for sale is PC2-5400 (667) DDR2 200-pin SO-DIMM Can someone tell me what the difference is? More importantly, will the PC2-5400 work fine in an iMac? My guess is that it's fine, but I figured someone one these forums would know for sure. Thanks!