FUD Zilla has some info about the memory support of the upcoming Intel Core i5 "Lynnfield" processors:
Since this wont change even with the new Core i7 975 and 950 processors, you will have to get Lynnfield quad core to get a CPU that can officially support DDR3 1333 and 1066.
When it comes to memory performance, Lynnfield might be better than its big brother, the Core i7 . As it is the case with Core i7, the fastest memory will definitely work, but for some reason, Intel doesn’t want to certify that it can officially run anything faster than DDR3 1066, which is quite a downer for the fastest CPU in the world.
Furthermore, the site also heard the fastest Lynnfield processor will be a quad-core part with a clockspeed of 2.93GHz.
Lynnfield, a CPU that might end up with Core i5 brand name in its fastest iteration, will end up at 2.93GHz. This is the frequency of all quad cores. With the little help of Turbo boost technology the same CPU will run at 3.6GHz but this is the maximum single core frequency you should expect to see.
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Re: Intel Lynnfield to support 1333MHz DDR3 by Anonymous on Thursday, May 14 2009 @ 05:32:22 CEST
Kind of sad that the 975 can't at least do the same. Honestly the 920 is fine at 1066, but 950 and 975 should do 1333 and 1600 on more than OC only mode.