Uncle_Pinny Posted September 16, 2008 Share Posted September 16, 2008 Quick question: I have a 2006 Pro with 667Mhz 5300 memory. Can I successfully use 800Mhz 6400 memory on it? Will it just run at the 667Mhz speed if I whack it in? It will be the only memory in my system so won't be mixed with any other sticks of 667Mhz speed. Any ideas? Link to comment Share on other sites More sharing options...
mrbonkers Posted September 17, 2008 Share Posted September 17, 2008 i think it would. in a pc it would run at a lower speed. it should do the same in a mac too Link to comment Share on other sites More sharing options...
atzero. Posted September 17, 2008 Share Posted September 17, 2008 On a pc: Usually On a Mac: Rarely. Apparently many have tried, very few have succeeded... Not sure why. Link to comment Share on other sites More sharing options...
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