Mobile Intel 940GML Express Chipset and Core 2 Duo processors?

I just found out that I can in fact, replace the crappy Celeron M with any Intel socket M CPU--as long as it is 533 MHz Bus. So the T7600 is out. I have to choose something like the older Core Solo, Core Duo or earlier Core 2 Duo. My best option is the Core 2 Duo T5300 1733 MHz 2mb cache. Power requirement is actually less. I read on a laptop board that a member was able to extend his battery life by just swapping the Celeron M for a C2D, his laptop is the same model as mine.

Cheers.  

Any word on whether or not this is true? I have an acer aspire 3690-2672 with either an i943 or an i940, but I'm pretty sure I have i940. I have been looking all over the Internet and I have never read a straight answer whether this is true.

I no longer have that laptop. The only store near me that had an old Core 2 Duo CPU was charging way too much for it because it was very rare (he also said it would be too difficult to make the swapping and bla bla), so I just bought a brand new laptop.

Thanks for such a quick reply.

The acer aspire 3690 has been my computer for the past 4 years now (Freshmen to Senior year) and I've had little to no problems with it and it has served all my functions pretty well. I was looking at spending maybe 40-60$ to add new life to it for college. The thing is right now I can't really afford to buy something that won't work or could screw up my computer costing me even more $$$, as I do need a computer. It's for those reason I'm just a little apprehensive about jumping the gun on upgrading to a new processor before I know it will work.

I have a asus a8h here that has the 940gml chipset. It came with core duo T2050 @1.6ghz 533fsb 2mb cache and i upgrade to core 2 duo t5500 @1.66ghz. 667fsb 2mb cache. I run 2 gig ram. 1 card is pc2-4300 (266fsb) and the other is pc2-5300 (333mhz) both run at the slower speed. The extra ram and and 5400rpm 500gb hard drive greatly improved performance. for day to day use.