Memory: 88 MB main memory (24 MB "internal" 1T-SRAM integrated into graphics package, 64 MB "external" GDDR3 SDRAM) [ 91 ] 3 MB embedded GPU texture memory and framebuffer . Storage: 512 MB built-in NAND flash memory Expanded storage via SD and SDHC card memory (up to 32 GB) Nintendo GameCube Memory Card (required for GameCube