ATX12VO does require a sacrifice. Newer power supplies will jettison support for old-school 3.3-volt and 5-volt rails, and concentrate solely on producing 12-volt power. But after kicking the tires on a pair of ATX12VO motherboards as well as an actual ATX12VO PSU, we can say that the future of desktop PC power looks brighter—and your old-friend legacy parts aren’t moving too far away.
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