What is the fastest ddr2 4gb sodimm ram?
What is the fastest ddr2 4gb sodimm ram?
It seems the exact frequency doesn't matter much as long as the Mac supports up to 800 MHz sticks. A quick search shows 2007 Imacs with Core2 Duos used around 667 MHz sticks, though later models had 800 MHz FSBs. It makes sense to match memory sticks to a 1:1 ratio.
The quickest DDR2 chip I've encountered is the PC2-8500 at 1066 MHz, but I haven't seen it in 4 GB SODIMMs. The top 4GB SODIMM speeds I'm aware of are the PC2-6400 at 800 MHz. The difference in speed probably won't be noticeable on a machine that's over 13 years old.