Sony detailed the media format that NGP will use at a panel for the next-gen handheld at GDC last night.
Tentatively known as the NVG card, the flash memory device will come in two storages: 2Gb and 4Gb, with Sony saying both memories will support small and large memories respectively.
Sony also confirmed that the cards will reserve five-to-ten percent of space for save data, patches and more, meaning more space in the internal memory of NGP and making it easier to switch game progress from one device to another.
Get Steph's full detailed report from last night's NGP panel through here.
NGP releases later this year for Japan at least. Thanks, IGN.