I was referring more to their storage mediums than the actual tech itself. Should have been more specific.
N64 used cartridges while Dreamcast and PSX used CD based formats. Gamecube used 1.5 GB proprietary discs while PS2 and Xbox used DVD (4.7 GB & 8.5 GB)
The Wii uses a DVD-based disc but some Wiis have trouble reading the 8.5 GB dual-layer discs.
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