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Intel Ditching 24 Pin Power Connector on Motherboards

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Comixbooks

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INTEL-ATX12VO-V3-SPECS-2-1200x675.jpg


https://videocardz.com/newz/intel-atx12vo-v3-to-remove-the-24-pin-motherboard-power-connector
 
So much for my Backup Power Supplies. I bet when Nova Lake launches this will be the new standard.
 
Corsair seem to sell an adapter cable for their PSUs, albeit not available with their fancy sleeving. Unless this v3 isn't backwards compatible.
 
I've been hoping 12VO would be used on desktop parts since it was released. Hopefully it will encourage motherboard makers to support USB-PD, since they'll have to add DC-DC converters for the USB ports anyway. The article doesn't imply that Intel are "ditching" normal ATX though, just that they've made a new version of 12VO.
 
The big problem with this is that the power rails that used to be in the PSU will now be on the motherboard. So not only will that make motherboards much more expensive, but you will also have all the heat from that conversion dumped into your case. Then you have to deal with mobo makers that may cut corners on the conversion, because no one will need that many hard drives plugged into the mobo. Plus you will have to deal with much more wiring as all hard drives will need both power and sata cables plugged into the motherboard. Then the worst part since all these rails are now on the mobo, if something damages them you now need to replace the mobo instead of the PSU.
 
Starfalcon said:
The big problem with this is that the power rails that used to be in the PSU will now be on the motherboard. So not only will that make motherboards much more expensive, but you will also have all the heat from that conversion dumped into your case. Then you have to deal with mobo makers that may cut corners on the conversion, because no one will need that many hard drives plugged into the mobo. Plus you will have to deal with much more wiring as all hard drives will need both power and sata cables plugged into the motherboard. Then the worst part since all these rails are now on the mobo, if something damages them you now need to replace the mobo instead of the PSU.
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They'll probably ditch sata soon, the connection at least -- may still use the protocol for m.2 devices, etc. It's unnecessary baggage for most computers, adds complexity and cost, and takes up space.

Afa heat, not really a problem if you have a well vented case. Hotboxes will suffer, of course. If they ditch those voltages, it's a non-issue. 😉
 
They should just go with an xt-90 connectors for every 12V 80A instance. There is so many things wrong engineering wise with using multiple pins for the same voltage.
 
Nobu said:
They'll probably ditch sata soon, the connection at least -- may still use the protocol for m.2 devices, etc. It's unnecessary baggage for most computers, adds complexity and cost, and takes up space.

Afa heat, not really a problem if you have a well vented case. Hotboxes will suffer, of course. If they ditch those voltages, it's a non-issue. 😉
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They cant ditch all the voltages esp 3.3V, as all NVME drives require it to work. Plus a lot of the board logic uses both 3.3 and 5V to work properly too. They are basically cutting out a chunk of the PSU and mounting it on the mobo, so they can say the PSU uses less power and is more efficient. All they did was move it to a different place that it isnt counted, it is just a sneaky way to meet californias newer energy efficiency rules.
 
Starfalcon said:
They cant ditch all the voltages esp 3.3V, as all NVME drives require it to work. Plus a lot of the board logic uses both 3.3 and 5V to work properly too. They are basically cutting out a chunk of the PSU and mounting it on the mobo, so they can say the PSU uses less power and is more efficient. All they did was move it to a different place that it isnt counted, it is just a sneaky way to meet californias newer energy efficiency rules.
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I mean, according to their benchmarks, the PSU is pulling LESS from the wall while performing the same workload.

Unless the device has solar or an infinity engine, the system is more efficient. Same work but less power is the definition of efficiency.

That said, right now the board already does a lot of voltage conversion and stabilization.
 
The big problem is doing this will not make PSUs cheaper, and it will definately make mobos even more expensive. Motherboards are already getting very expensive as it is, and adding half a PSU to them will just make them more expensive. Then you have the issues with limited hard drive expansion as PSUs will no longer have any connectors besides the ones that go to the motherboard. Those small 4 pin connectors on the board are where you hook up the SATA power connectors, and you will no longer have any way to add them anymore.
 
Starfalcon said:
The big problem with this is that the power rails that used to be in the PSU will now be on the motherboard. So not only will that make motherboards much more expensive, but you will also have all the heat from that conversion dumped into your case. Then you have to deal with mobo makers that may cut corners on the conversion, because no one will need that many hard drives plugged into the mobo. Plus you will have to deal with much more wiring as all hard drives will need both power and sata cables plugged into the motherboard. Then the worst part since all these rails are now on the mobo, if something damages them you now need to replace the mobo instead of the PSU.
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It won't make as much difference as you think. Very little actually uses 5V or 3.3V, so there are already a whole load* of DC-DC converters on motherboards to convert those voltages down to what is really needed. So it won't be a case of moving e.g. the 5V rail onto the motherboard, but of replacing an existing 5V to 1.8V converter with a 12V to 1.8V converter. There will be a slight increase in cost from needing higher voltage rated parts on the input, but not much.

SATA is slowly going away, so motherboards don't need to send much power over cables to peripherals. Also, the maximum non-12V power needed by a given motherboard is better defined than the maximum that a PSU might have to supply to an arbitrary motherboard, so the DC-DC converters can be sized more conservatively, which will reduce cost and increase efficiency.

12VO is already being used in servers, so we know it can be a worthwhile improvement.

* If you want an idea of how many, look for inductors on a motherboard. More or less every one will be associated with a DC-DC converter.
 
Starfalcon said:
Then you have the issues with limited hard drive expansion as PSUs will no longer have any connectors besides the ones that go to the motherboard.
Click to expand...

We'll still need connectors for big gpus, right? Sooner or later, someone will make something to hook up to one of those connectors and have a bunch of sata power. I'd expect transitional power supplies to give sata power for a few years, too. Because some people use sata expansion cards, etc.
 
If States like California are so worried about power usage, they should stop building AI datacenters. Oh right, they real reason is because they need us to use less power so they can sell more at a higher cost per watt to corporations.
 
Astral Abyss said:
If States like California are so worried about power usage, they should stop building AI datacenters. Oh right, they real reason is because they need us to use less power so they can sell more at a higher cost per watt to corporations.
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They would probably like to see 100% EV as well, even though they have issues with Brownouts already.
 
Starfalcon said:
The big problem with this is that the power rails that used to be in the PSU will now be on the motherboard. So not only will that make motherboards much more expensive, but you will also have all the heat from that conversion dumped into your case. Then you have to deal with mobo makers that may cut corners on the conversion, because no one will need that many hard drives plugged into the mobo. Plus you will have to deal with much more wiring as all hard drives will need both power and sata cables plugged into the motherboard. Then the worst part since all these rails are now on the mobo, if something damages them you now need to replace the mobo instead of the PSU.
Click to expand...
The minor rails aren't dumping that much heat anyways, that's a non-issue there.

It would definitely make large hard drive arrays far more scalable on consumer platforms. No longer will you need to buy an oversized or server PSU just to have enough power on the 5v rail for hard drives. The board's 5v power supply will provide as much power as is needed for the number of connectors it has. An add-in board will also do the same. If the onboard system fails, just use an add-in board, no need to buy a whole new motherboard. In fact, chipsets have been stripping SATA features over the years anyways so just take it all out, put it on an add-in card, and give us more flexible PCI-E lanes.

Astral Abyss said:
If States like California are so worried about power usage, they should stop building AI datacenters. Oh right, they real reason is because they need us to use less power so they can sell more at a higher cost per watt to corporations.
Click to expand...

Schleprock said:
They would probably like to see 100% EV as well, even though they have issues with Brownouts already.
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