Chip process evolution is a usual thing in a console’s lifecycle, but rarely has it been as important as in the case of the Xbox 360.
Known for its relatively hardware fragility, the original design of the Xbox 360 would frequently fall to the “
Red Ring of Death” failure, which Microsoft terms as the three flashing red lights. While improvements in cooling and a CPU die shrink to 65nm in the
Falcon revision have surely improved the situation, the problematic GPU still sits with its 90nm process.
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Source: Dailytech