[quote name='Bezerker']Considering right now the PSP can only handle 4gb max, i wouldnt buy it yet. But honestly, you can get 5, 4gig sticks for less than that, so why even bother. These'll definately go down once Sony starts putting out the MS Micro (which is 1/4 the size of the Pro Duo [comes with adapter], and has sizes up to 32gigs)
Kinda wierd that theyre already coming out with these, Sandisk has yet to release all of their 4 gig sticks. I also cant find anything on Sandisk's site.[/QUOTE]
The 4GB capacity limit isn't a limit of the Memory Stick spec itself, which Sony has given as 32 GB, and the PSP shouldn't physically have a problem. I suspect it is more a matter of maxxing out the pseudo-disk format being used. So a firmware update may do the trick, as it did for many a PC motherboard BIOS.
The early Memory Stick spec (before Pro) had some serious limitations and Sony had a version called Memory Stick Select for a while that allowed the user to switch between two or four banks of 128 MB. This could be revived for handling multiple 4 GB banks on a card in the PSP.