Intel introduces ATX12VO spec eliminating 3.3 and 5v

[eccerr0r]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

Allrighty found documentation, yeah looks 12VSB is separate from the 12V power.
Anyway so it looks like ATX12VO motherboards also need to supply power to SATA hard drives as it would be quite difficult to power legacy hard drives without 5V... And USB will still need a downconvert, and probably from 12VSB too to charge devices while the computer is off. Then again who knows if rapid charge will be implemented? Did not find how many watts minimum 12VSB needed to supply, though 10W is absolute minimum and it looks like it needs to supply around 2A perhaps?

Also looks like we need to stock up on 3.3mF 16V+ low esr capacitors as it seems there's a requirement for these to be installed in the spec...

No more than 1% ripple, 5% voltage tolerance...

[eccerr0r]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

From what I read, it's 12V standby too. Can't say why, other than to make them truly "12V only".

But still not clear, is the 12V always on or is there a second 12V supply that's always on and the first one is switchable?

[Per Hansson]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

Linus Tech Tips did a piece on this a couple weeks ago, thought I saw the link here but maybe not?

https://www.youtube.com/watch?v=heyGtgdfN7A

[ratdude747]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

What's the standby voltage for ATX12VO ? Is the 12V always on or is there another low power supply supplementary?

From what I read, it's 12V standby too. Can't say why, other than to make them truly "12V only".

----

I'm a bit late to the party, but I will note that this setup is roughly how a lot of (but not all) modular server/workstation supplies work. At least my supermicro ones do. Still has a separate 5VSB, but the modules are otherwise single 12V railed, and the modular interface does all the stepdowns for the other voltages. Handy for repurposing such as high-current 12V supplies.

This also means if for some bizzare reason I ever wanted to convert one of my modular PSU'd eeATX SM cases to ATX12VO, I could theoretically design a "dummy" interface board (replace the existing board and cable) to do such (although I'd need to include some amount of 5V for running the SAS backplane (and legacy drives), and add a 12V boost converter for the 5VSB. Hell, SM might just do that for future products if they adopt ATX12VO on future workstation/server boards and chassis... other than 5VSB -> 12VSB change, they're already there.

[eccerr0r]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

What's the standby voltage for ATX12VO ? Is the 12V always on or is there another low power supply supplementary?

[stj]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

that kind of looks like an xbox-one
wait till a fet shorts and you have to work out which one and actually replace it!!

[Uranium-235]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

except that there is now a growing trend to solder the cpu to the fucking board!!

intel notebook cpu's lately have the CPU and ICH in on a single package

An Asrock ATX12VO motherboard.



An entire VRM on the motherboard. I have trust issues with SO double package mosfets, and this has plenty of them

[RJARRRPCGP]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

except that there is now a growing trend to solder the cpu to the fucking board!!

Like it's the SX era, LOL!

[Uranium-235]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

except that there is now a growing trend to solder the cpu to the fucking board!!

yeah i've seen that on some small oems and a growing number of laptops (especially thin ones)

as far as usb destroying soc cpus, the motherboard manufacturers need to add some decent protection on those circuts

standard atx desktop boards haven't seen that change and manufacturers thus far have "assured" they're going to keep "sockets"

[stj]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

And thus when a motherboard replacement was required previously, a CPU replacement is required instead.

except that there is now a growing trend to solder the cpu to the fucking board!!

[RJARRRPCGP]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

Reminds me that since Athlon 64 and first gen Core i-series, more things were actually moved from the motherboard to the CPU. And thus when a motherboard replacement was required previously, a CPU replacement is required instead.

[stj]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

i have seen so many 775 and i3/i5 boards written off because of those "sockets" that it's sickening.
they arent even "sockets" - it would be better to describe them as plugs.

and have you seen how often Rossmann finds dead intel cpu's because they put power management, video or usb on the cpu and the ports got shorted!!!

[ChaosLegionnaire]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

yea i agree with that too. personally and actually, they (intel) have been constantly moving the shit over to the mainboard manufacturers since lga775 when intel put the cpu socket pins on the mainboard instead of on the cpu like pga478 and earlier.

this shit is yet another manifestation of intel moving more and more of the failure points over to the mainboard! boooo to intel!

[stj]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

fuck intel, it's just going to make the motherboards less reliable by moving the main failure point from the cheap metal box to the expensive bit!
and that's probably why they are doing it! dell have been doing it since i3 and they are a dog to work on!

[ChaosLegionnaire]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

oh boy... thanks for the heads up... time for me to start hoarding legacy power supplies now! lol!

anyway, rather than keep the 8-pin eps 12v power connector for high power systems, they might as well just add that 24v rail which they were thinking of doing for some time for high powered systems instead. pretty easy to add that 24v rail by just using a voltage doubler in the psu design. im sick of using 3 sets of 8/6 pin pci-e power connectors on high power bitcoin mining gpus!

[Topcat]

Re: Intel introduces ATX12VO spec eliminating 3.3 and 5v

Long overdue.

[Uranium-235]

yup. Should be adopted by OEM' within next year or so, for standardized within the next two

https://www.tomshardware.com/news/at...-supplies-psus