if you google, there are 64Gig USB flash drives available. Check out the chinese sites for the cheaper ones. I have also heard there are 128Gig ones available. I did see a USB raid drive made with 512M USB and while it did speed things up it relied on all the USB sticks being on one USB hub. If there had been seperate paths for the USB to motherboard links, I have no doubt the speed would have increased significantly.