Not the OP, and sorry to resurrect a thread, but I'm considering something similar, only a 2420 instead of a 2410. Per the manual, the 2420 supports:
• Intel® Celeron® M processor 370/380/390 (1 MB L2
cache, 1.50/1.60/1.70 GHz, 400 MHz FSB) or higher
• Intel® Pentium® M processor 725 (2 MB L2 cache, 1.60
GHz, 400 MHz FSB) or higher
• Mobile Intel® 910GML Express chipset
Why do you say there won't be much of a difference?
Since they say "or higher", would it be plausible to use a Pentium M 755 (2.00GHz, 400MHz FSB)? Would that change your answer above?
Of course, with a price tag about $100, I'm not sure it makes economic sense to do it. I already have 2GB RAM.