Hexus has posted a review on the MSI 845 Ultra ARU motherboard

I'd have to say yes to the first question. For a lot of people who wouldn't by RAMBUS for whatever reason but would also not buy a P4 SDR system due to low performance, Intel officially releasing a DDR chipset is an enabler onto the platform for many people. It offers a performance level slightly under that of i850 and RAMBUS and gets the crucial technology into play that most people are a huge fan of. DDR memory is cheap, available and proven and lets people reuse an existing investment they are almost bound to have, especially if they are coming from any recent AMD system.

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