After following the above link & doing a bit more research I think I'm going to go the T9900 route. The X9100 is hit or miss with the Best Buy model (which I have), but the T9900 gives the same performance increase and works well in the G72 according to other owners who have also partaken in this upgrade. Now I'm wondering about the 15% overclock I can gain with the "Turbo Gear Extreme" software included on with the G72. Would the T9900 overclock by 15% ok or would heat become an issue? Any ideas?
please let me know how it works out for you. i am thinking about upgrading too cause i want alittle more out of the laptop, just dont know where to start.