Hey subaru, FYI ive dedicated in the last 2 weeks roughly 100 hours to searching and learning about laptop hardware and its potential, your query sounds near identical to what i have just recently bought (3 posts up from this one, ive emulated shadow of the colossus and FFX, read my post bud) so using that as a basis ive been told by others that the nvidia 540m would be the best way to go, while it possesses less pipelines and a slower core speed then my radeon 6490m it has far superior shader speed, Memory Bus Width and Max. Amount of Memory, so in other forums people agree that the nvidia 540m would destroy my card.
As for my CPU the i5 2410m its a great processor it has a higher transistor count than the i5 540m and also has its own GPU installed directly on the die (HD Graphics 3000 650-1200MHz its used as a power saving processor for less intensive applications) it is also built on the new Sandy bridge architecture, the i5 540m on the other hand utilities the older Arrandale architecture, read this insert from notebookcheck.net :
"Due to the improved architecture and the new Turbo Boost 2.0, the average performance of the Core i5-2410M is higher than a similar clocked Arrandale Core i5. In our benchmarks, the 2410M was able to beat the fast Intel Core i5-560M with 2.7-3.2GHz and is therefore suited for even demanding tasks."
Yes, the i5 2410m beats both the i5 540m and the i5 560m, PCSX2 requires at least 2.6 ghz processor and the i5 2410m is dual core 2x 2.3ghz, 2x 2.6ghz with turbo mode or 2.9ghz for one core, im wondering if maybe that's not quite enough, might be best to go higher, personally im not satisfied with just emulating to get it running at a decent frame rate, im looking to at least increase the eye candy so it will look smooth, no jaggies and better textures. overall you will probably want something a little superior to my laptop, an HP DV6-6178ca, be prepared to spend over $1000 my friend (that's exactly what mine cost) , looks like i may have to.
P.S. here's a handy site i found that others seem to praise as the definitive site for laptop CPU and GPU comparison information, believe me you'll want to check this out. good luck.
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http://www.notebookcheck.net/Notebook-La....48.0.html -----
this is a pretty easy site to navigate, i find myself opening multiple windows to do a side by side comparison of CPUs and GPUs
EDIT: as for shadow of the colossus, i only got 45 fps looking at a wall close up otherwise i was getting a steady 36fps (emulator set at lowest setting possible, believe me), ive already killed the first 2 bosses, the boss battles are ok (kind of an advantage at that frame rate) its the traveling and everything else that's overly annoying.