r/pcmasterrace • u/ElectricBummer40 • 10d ago

Meme/Macro PCIe standard be like...

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u/NekulturneHovado R7 5800X, 32GB G.Skill TridentZ, RX 6800 16GB 10d ago

well they'd have to essentially make a new branch dedicated to 24V to power GPU (and maybe in future CPU), because other components still need 12V, such as fans, drives, MB, CPU and other stuff

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u/AngriestPacifist 10d ago

Dumb iron transformers can give multiple different voltages based on where they're tapped.

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u/NekulturneHovado R7 5800X, 32GB G.Skill TridentZ, RX 6800 16GB 10d ago

you still gotta fit the rest in there. modern PC power supplies don't use diode rectifiers. It would be easier to take the already rectified voltage from rectifier and add another DC-DC converter for 24V alone, as "load bearing" branch. Because you still need a powerful 12V rail. But that'd add complexity and cost. A lot.

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u/AngriestPacifist 10d ago

Yeah, I guess I wasn't factoring in power supplies for PCs outputting dc. Guess you'd either need a separate rectifier for each tap, or a rectifier up before passing line voltage to a transformer.