Yeah, I've heard of some rediculous overclocks on the mobile 2500+.
I may (only slightly) disagree with the 2800+ not being a great choice for a regular Barton. Since the multipliers are locked now, the regular Bartons will have a realistic ceiling of around 200-210mhz FSB. (Of course mileage does vary with the quality of RAM and chipset used) At least with a 2800+, you're starting with a higher multiplier, so assuming the proper cooling is in place, you should, at least theoretically, have a little more MHZ to play with. Now is it as cost efficient as a 2500+? That's a whole other ball game. Just my opinion. :)
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