Originally Posted by Mr. K6
chip modification is another route, but good luck soldering that
Hmmm. I have access to a SMT rework station, so that's not out of the question, if the crestline chip (or other chipset) turns out to be pin compatible. I wonder what the chances of that is? But it might be possible to just solder in a new reference cystal/oscillator. There usually isn't a secondary reference, so fixed multiplier be dammed - we might be able to bump the constant up instead & get the desired result anyway. And if we shoot for an 800 FSB, all of the system freqencies will be kosher, assuming that you have 667Mhz ram, that is. And gain +20% on the core! My immediate concern is that this might
inadvertently O/C the north bridge. It's hard to know what divisor ratios intel uses internally. Anyway, I won't have time to open my case up until the weekend after next. But I would have time to study datasheets if anyone can look inside their notebook & ID the PLL IC (chip). If the datasheet on the chip looks promising, I'll order some crystals & get this rolling. Soldering a crystal isn't that hard - if this works, it could be an in for a lot of us.