one thing to remember is the bigger the hdd
the longer the acess
and hdd access it the main thing that kills a computers speed
Can you cite references to support this? I think you're wrong. In fact, just the opposite is more likely. I just read
Western Digital 2TB Hard Drive Review. Here's a quote, which confirms my thinking on this point:
"That’s not to say that the drive is slow, however, because it simply isn’t, thanks in part due to its massive storage space. As areal density (the amount of data stored within a certain area of the physical disk) rises, so does the speed of the drive, since the head doesn’t have to travel as far to read the same amount of data."