[PCWorld] How Intel is changing the future of power supplies with its ATX12VO spec - Overclock.net - An Overclocking Community
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[PCWorld] How Intel is changing the future of power supplies with its ATX12VO spec

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post #1 of 27 (permalink) Old 03-09-2020, 12:56 PM - Thread Starter
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[PCWorld] How Intel is changing the future of power supplies with its ATX12VO spec

Source: https://www.pcworld.com/article/3518...12vo-spec.html

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The ATX12VO spec removes voltage rails from the power supply, all in a bid to improve efficiency standards on the PC and meet stringent government regulations. But while the spec essentially removes +3.3-volt, +5-volt and -12-volt and +5-volt standby power from the PSU, they aren’t going away—they’re just moving to the motherboard. That’s the other big change, so keep reading to find out more.

Don’t panic, DIYers: The PSU Enforcement Agents will not be coming to take away your 1,500-watt ATX PSU (there’s no such thing as PSU police anyway). ATX12VO is currently aimed mostly at PC OEMs and system vendors—some of whom have already started down this path on their own.

ATX12VO won’t be replacing ATX12V for individual PC builders. “Intel plans to continue to publish the ATX Multi Rail spec to maintain compatibility with existing motherboards and power supplies to provide the most options for our OEMs and customers,” Intel officials told PCWorld.

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post #2 of 27 (permalink) Old 03-09-2020, 02:02 PM
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so if the new parts fry on the mother board, intel still makes us buy another mother board? Why does this feel similar.

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post #3 of 27 (permalink) Old 03-09-2020, 02:22 PM
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Quote: Originally Posted by ACleverName View Post
so if the new parts fry on the mother board, intel still makes us buy another mother board? Why does this feel similar.
My thoughts exactly...

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post #4 of 27 (permalink) Old 03-09-2020, 02:30 PM
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If those voltages are still needed for these systems then moving them to motherboard helps nothing much at all. Unless I don't know, you want to run a 10 meter 3.3 V cable that will push 20 A but that was never the case even when such voltages and currents were in use.
It's more about cutting costs, making desktop PCs same as laptops when it comes to power supplies. Feed them 12 V from PSU or battery, the rest is the same. Low power devices with barely sufficient power parts.
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post #5 of 27 (permalink) Old 03-09-2020, 02:33 PM
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If parts fry in the PSU you have to buy a new one either way.

OEM's have done this for years now anyway. It is not like those systems have tons of accessories. You just connected hard drive power and data to the motherboard.

If they do this for DIY systems, it could work, but at that point many devices would have to have their own DC-DC converters or rely on the motherboard.

Power supplies already use DC-DC converters for the lower rails(I would guess the standby is another power supply of its own). This just moves them. I hope they will not cut that many corners when making them.

By the time this makes it to DIY systems, I do not think there will be any issues with it.

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post #6 of 27 (permalink) Old 03-09-2020, 03:02 PM
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I'm cool with this, parts moving to MB means cost will move over as well, but more efficiency is always a good thing. Gotta wait for DIY parts to be available before switching though so it might not be next build but the one after.
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post #7 of 27 (permalink) Old 03-09-2020, 03:27 PM
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this came up a few weeks back.

sounds terrible, even in the office space... n im'a keep thinking that until someone can convince me otherwise. Now you're gonna be swapping entire main boards for YET ANOTHER ISSUE.

no one better tell the govt about out of spec processor power consumption. they'll shut the whole hobby down!

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post #8 of 27 (permalink) Old 03-09-2020, 05:48 PM
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tbh the PSU can stick to just 12V major rail and 5V subrail, then replacing the 24pin head with a pico-PSU to generate -12V and 3.3V.
but then, how do they solve the power requirements of SATA rev3.3 that needs 3.3V signaling?

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post #9 of 27 (permalink) Old 03-09-2020, 06:14 PM
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Well with the flash-over-function design of most all mobo cooling, the more PSU functions put on the mobo, the worse. And they certainly won't make them to last any real amount longer than current mobo's, so they want you to get a new PSU each time now and toss the old. Why am I not surprised

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post #10 of 27 (permalink) Old 03-09-2020, 06:47 PM
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Quote: Originally Posted by epic1337 View Post
tbh the PSU can stick to just 12V major rail and 5V subrail, then replacing the 24pin head with a pico-PSU to generate -12V and 3.3V.
but then, how do they solve the power requirements of SATA rev3.3 that needs 3.3V signaling?
Intel Announces New Drive series no longer making use of 3.3v rail.

Get yours Today!

seriously though... do modern board level Flash solutions even use 3.3v? most OEMs come with M.2s/NVME stuff, and have been doing so for easily 5 years, 10 in the high end segment. (found some T550 in storage with M.2s)

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Last edited by skupples; 03-09-2020 at 06:52 PM.
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