Ok so as the title suggest I believe I found the answer. I think its pretty obvious that the limit set it because of hardware not software. mp's and xserves can run up to 32GBs of RAM. The new core i7 architecture is coming out within less than 6 months. This processor runs triple channel memory. This is achieved by installing 3 matching pairs of DIMS. This would make it affordable by installing three 2GB sticks. YES i realize that that the new notebooks arent the core i7 branding but maybe doesnt plan on upgrading the mainboard and they purposely set the hardware limit because of i7.