Its probably a bit too early for the guru that is CanadaRAM to be on here yet but maybe someone else will be able to help! I'm wanting to get an extra 2GB of RAM for my mac pro seeing as just booting my computer up gives me a few hundred pageouts. After looking all over the place, I'd settled on Kingston memory from Dabs. However, I decided to check Crucial again to find pretty good prices all of a sudden, about half that of what it was a few months ago. Can anyone explain to me the difference between these two packages: http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=496B109DA5CA7304 - Apple Xserve (FBDIMM) Server - £125.01 http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=0F893FE9A5CA7304 - Apple Mac Pro (4-core) Desktop/PC - £131.71 After speaking to them on the phone briefly, I was told they're the same memory and they responded 'yes' when I asked if the cheaper ones had the big heat sinks. I'm still dubious. The only bummer with Crucial is that they don't offer Saturday delivery, only next work day delivery even though they use Royal Mail Special Delivery which I swear is next day including Saturdays unlike the rest.