I just got a Dual 1 Ghz MDD. It's a big step up from my 500 Mhz Sawtooth! The problem is that it (supposedly) needs a new logic board. I've been watching logic boards on ebay, but I'm not finding anything with matching part numbers. My logic board has the following numbers: 630-4373 EEHNNW 448F2 KD2370366NFGA 630-4269 I guess the important numbers are the 630-* numbers. Perhaps one it the 'as designed' rev part number, and one is the 'as manufactured' rev part number? I have the dual 1 Ghz processors; would they work on a 1.25 Ghz logic board? Most of the boards I see on ebay are 820-1476-A, or 820-1308-A. What's the difference between the 820- boards and the 630- boards? I don't have a complete service file for the MDD; can anyone email a copy? Thanks, Jim.