Originally posted by gaara
I was under the impression that Intel was only going to be using DDR2-533 except for the extreme edition which I believe has a 1333FSB and thus uses DDR2-667...although I heard these specs way back when conroe was just announced and have no idea how accurate they are now
Well, for 1:1 support you are correct, at stock speeds any ways, but just as a FSB 200 P4 had native DDR2 533 support, Conroe at FSB 266 with have native DDR2 667 support.
You get this through just running upward divider on the memory. As you would expect, running memory faster than the FSB does not improve bandwidth 1:1 with the frequency increase, but does produce some performance gain.
The other piece is of course overclocking, and any speed DDR2 will work, you just might not have the options to run the RAM at its full speed without overclocking.
Keep in mind that with the lower frequencies of Conroe paired with higher FSB, the multi's are low so FSB starts getting pretty high when you OC. If you look at what they have done so far, a E6600 has been doing 3-3.3Ghz on air. Let's say you get one that does 3.2Ghz, it would take a FSB of approximately 355 to get there. So that would mean a slight OC of DDR2 667, or an underclock of DDR2 800, but you might be able to tighten the timings a bit which has shown to help Conroe somewhat (this is assuming you run the RAM 1:1).
I am planning on going DDR2 800 as it will take any RAM question-ability out of the OC options. It also looks like Conroe has multies unlocked downward, in which case in the example of 3.2Ghz you could run DDR2 800 full speed 1:1 with an 8 multi.
Anyways, I babbled