running vista i assume?
i also assume that it maxes out CPU when running this calculation? if thats the case, you dont REALLY want a computer that utilises HT because it doesnt do diddly-squat when CPU usage is >50% on the cores, but there are no laptops that dont have HT in the arrandale lineupi guess you're stuck there.
also, how much RAM does the application use? probably not HEAPS?
lastly, can the mac OS run your software?
You should be able to disable HT somewhere on the macs. In Windows machines, you can do it in the bios.
i quick google told me that its the 4500MHD that is implemented in the ix mobile chips. am i mistaken? (again lol! its been a long day)
It is the 5700 I believe. I know the 4500 is the older chip.
Also with turbo boost, you are limited to one core.
I highly doubt in the realworld, it will be a 40% improvement.
Arrandale processor are generally clocked lower, and clock per clock a 20% improvement is still significant but not enough to make older machines look like POS.