As a brief sidenote, Intel is announcing its first mobile Extreme Edition processor today - the Core 2 Extreme Mobile Processor X7800. The X7800 is based on Intel's Merom core (mobile version of the desktop Core 2 Duo), and runs at 2.60GHz on an 800MHz FSB. The chip features the same 4MB shared L2 cache as other high end mobile Core 2 processors, and like all desktop Extreme Edition CPUs, the X7800 is unlocked for more flexible overclocking.
Intel has been championing this trend of everything becoming more mobile for years now and is hoping to capitalize on users who want to configure high end gaming notebooks.

The first notebooks with the mobile Core 2 Extreme will start shipping in about two weeks. ASUS and HP will be among the first OEMs with systems available. You can expect the "Extreme" badge to carry a hefty pricetag as it does on the desktop, have fun lugging that burden around from one LAN party to the next.
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Despite theoretical showings on paper, the 1333MHz FSB appears to do very little for performance even when feeding four of Intel's fastest cores.
I've been wondering how older motherboards will work with the new FSB1333 processors. Specifically I'm interested how an ASUS P5W DH Deluxe without the latest BIOS would react to having e.g. an E6750 dropped in. ASUS claims support for FSB1333 processors for the P5W DH Deluxe as of 2205 beta.
Would the system boot and run using a pre-2205 BIOS (although not at peak performance), so a BIOS upgrade can be performed? Or would the system fail to boot at all, like when the first Core 2 Duo processors surfaced and needed a BIOS upgrade to run at all on certain boards.
The reason I ask this is that I've my eyes set specifically on that board (I have several reasons, ECC memory support being one of them). I had originally planned on getting an E6600 after the July 22 price cuts, but right now there's nearly no FSB1066 processor to be had locally. Also, I'd of course love to have a access to the latest processors in any case.