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MrT-Tar said:

4gb is lower than I thought given that PSP games on dual layer UMD come close to that.  I think it should be enough room considering that it is similar to a single layer DVD, I just expected a bigger jump.


the size is just over double, UMD is 900mb(Single layer), 1.8gb (dual layer). The 2gb/4gb limits are probably in place so that games don't get too large for digital distribution. Also its more then 3DS games which are currently limited to 1gb ( though if needed Nintendo can produce larger game cards).