Hello. I have a HP desktop PC (Intel Core2 Quad Q9400 @ 2.66Hz, DDR 2 4GB, Vista 64-bit) and a MacBook Pro 2010 (i7 2.66GHz Duo core, 8GB DDR3). The MacBook Pro has both Vista 64-bit and Mac OS/X installed. For running computationally intensive programs such as Matlab/Simulink, which platform gives the best performance in speed? If I upgrade the RAM on my HP desktop PC to 8GB, will it be faster than the MacBook Pro because the CPU is Quad core? I read that "a few routines" in Matlab/Simulink support multi-cores CPU. However, the i7 has some kind of turbo boost feature. Thanks.