Hi all. Let's say, that the rumors are true, and the nVidia 9400M chipset is not 64-bit. But let's say I'm a 4GB person, or perhaps even 8GB (an nVidia PR has reportedly said that this is possible. Let's just assume that he's telling the truth) So. The chip itself would be 64-bit, being the second gen of Penryn processors. Now, the chipset itself not being 64-bit, would that mean any performance hit? I'm not talking about "noticeable" performance hit. I'm talking about actual number crunching performance hit. Does anyone know whether the chipset itself not being 64-bit would hit performance? Oh, and just to recap, this is assuming the new MBPs run fine with 4GB and 8GB as well, leaving RAM issues out of the pot. But as in the execution of 64-bit code and stuff. Thanks.