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Intel is changing the future of power supplies with its ATX12VO spec

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Re: Intel is changing the future of power supplies with its ATX12VO spec

#181

Post by ChuckMcM »

effie wrote: post #179
ChuckMcM wrote: post #172

Earlier quoted context omitted.

Such supplies exist for some levels of power. Very popular in the MiniITX community where power levels are For a non-engineer putting something together I would look at DC-DC converter modules (see https://www.digikey.com/products/en/power-supplies-board-mou... ) that provided the necessary power rails, at the power level that was required. Such a solution would not be compact and integrated like one that was designe…

Thanks, this is useful. I am thinking about building a UPS at home from batteries, so it can supply around 650W of DC power. I assume that using voltage of 12V on the supply side of the DC-DC converter would be too energy-inefficient for such high a power, so I'm thinking I'd better string such 12V batteries in series to get higher voltage, say 300 V. This should have minimal transmission losses, so I can lead this t…

Most of the mid-range UPS systems that are rated at 650KVA or above will use dual 12V batteries for 24V driving an inverter. You can get 1kW inverters for RV's but they need thick (0 gage) wires connected to the battery.

For "universal" battery power (and lots of gear in the market already) consider 48V power. That has been the standard at phone companies for decades so there is a lot of support for it. I once bid on a 10kW 48V inverter on eBay that had been removed from service at a phone company. It made (240V two phase power for telephone racks).

Re: Intel is changing the future of power supplies with its ATX12VO spec

#182

Post by effie »

PaulDavisThe1st wrote: post #159
effie wrote: post #136

Earlier quoted context omitted.

> I built (on an ATX form factor) were 12VDC native I want this! Mainly to run from batteries efficiently, transforming from DC to AC and then back to DC is so absurd. Can you give any photos/links/recommendations on how to start?

Sadly, I mistyped the above. I used ITX mobos, not ATX. However, you can get started by taking a look here: http://mini-box.com/ and in particular the "picoPSU" section. A few images and details of one of the systems I built here: https://sprinter-source.com/forum/showpost.php?p=289185&post...

Thank you. Where did you get the 12V power supply, from a car battery? Or a solar panel?

Re: Intel is changing the future of power supplies with its ATX12VO spec

#183

Post by loeg »

ComputerGuru wrote: post #118
loeg wrote: post #109

Earlier quoted context omitted.

It's a 10 year old TFT: https://support.hp.com/us-en/document/c02159509 "Typical power consumption: 130 W."

Right, but doesn’t it suspend when you’re away? DPMS should be at least an order of magnitude less, if not two.

Nope. I turn it off when I'll be away for a long time. But not if I'm just grabbing food or doing some housework or whatever.

Re: Intel is changing the future of power supplies with its ATX12VO spec

#184

Post by DiabloD3 »

gothroach wrote: post #111
DiabloD3 wrote: post #27

Four important things to consider: First, this already happened to some extent. Outside of drives and fans, the virtually all of the power used in your system is exclusively 12v; either from the 12v pins on your ATX24 or P4 or EPS12 connectors, or via the PCI-E connectors; very little non-drive or non-fan power is supplied via 3.3 or 5v rails. Second, almost all PSUs today use 12v DC to 3.3/5v DC converters to increa…

>Outside of drives and fans, the virtually all of the power used in your system is exclusively 12v; either from the 12v pins on your ATX24 or P4 or EPS12 connectors, or via the PCI-E connectors; very little non-drive or non-fan power is supplied via 3.3 or 5v rails. I'm curious which fans don't use 12v - all the fans I know of in a typical computer operate on 12v except perhaps GPU fans. Occasionally I'll run a fan o…

Not quite the answer you're looking for, but:

Some systems control fans via voltage (the old way of doing it), instead of modern PWM (which has been the standard for about a decade); and even with PWM, it should be viewed as an average of the voltage instead of merely as the peak voltage during pulses.

No matter how you end up controlling your fans, you're not giving them straight unfettered 12v, either you're controlling them via voltage (and they spend most of their time at around 5-7v), or you're controlling them via PWM (with a significantly reduced load cycle).

Some ultralight laptops have switched to 5v for their fans, but that does not seem to be any sort of standard. I have not seen a GPU that uses 5v for fans, and by the time GPUs needed big enough fans to have to control the speed on, they were exclusively PWM, and I am not aware of a GPU that used voltage control on it's fan.

Re: Intel is changing the future of power supplies with its ATX12VO spec

#185

Post by m463 »

PaulDavisThe1st wrote: post #158
m463 wrote: post #116

Earlier quoted context omitted.

I bought a tesla 700 miles away and drove it home the same day. As to RVs and vans: - the cybertruck ships in the next year with 500 miles range, and will charge at 250kw/1000 miles per hour - the tesla semi is coming soon - other companies are entering the game - people have been putting lithium ion batteries in their RVs. - EVs have electric air conditioners now. Separately I will say if you're driving an RV 5-800…

I wouldn't want to drive 5-800 miles a day every day, and I don't. But when we do (e.g. just trying to get somewhere before staying there for a while), I don't want to be cramped in that way. The cybertruck charging rate sounds great, but where are the charging stations? You know, the ones in southeastern Oregon or southwestern New Mexico? I'm not trying to be a debbie-downer about this. I absolutely believe in an el…

https://www.tesla.com/supercharger

https://www.plugshare.com/

any rv park

Re: Intel is changing the future of power supplies with its ATX12VO spec

#186

Post by cwillu »

mcv wrote: post #161
PaulDavisThe1st wrote: post #63

I love computers with 12VDC native power jacks. Why? My solar-powered van (interior only, the engine is still diesel) is 12VDC everywhere, and that's good clean battery DC, not some noisy-ass AC/DC conversion. I love it so much that 2 of the last 3 computers I built (on an ATX form factor) were 12VDC native. I have external AC/DC power supplies for them, but when travelling/living in a solar-powered environment, I ge…

I was recently wondering if 12VDC shouldn't become the new current standard for inside homes. Everything is still 230VAC (in the EU at least, I think the US uses 110V?), which is way too much for a lot of household appliances. The only reason modern LED bulbs are hot and expensive is that they need to convert down to 12V from 230V. It's mostly washing machines and kitchen appliances that need that much (and some of t…

The vast majority of the thermal output of a modern led is the led itself.

Re: Intel is changing the future of power supplies with its ATX12VO spec

#187

Post by PaulDavisThe1st »

effie wrote: post #182
PaulDavisThe1st wrote: post #159

Earlier quoted context omitted.

Sadly, I mistyped the above. I used ITX mobos, not ATX. However, you can get started by taking a look here: http://mini-box.com/ and in particular the "picoPSU" section. A few images and details of one of the systems I built here: https://sprinter-source.com/forum/showpost.php?p=289185&post...

Thank you. Where did you get the 12V power supply, from a car battery? Or a solar panel?

My van has 455aH of storage in lead acid AGM batteries, charged by 540W of solar panels and a solar charge controller. The batteries power a 12VDC service panel; one of the circuits runs to the computer/office area, where I have a voltage regulator to keep the voltage within limits when the solar charger decides to ramp things up to high for the picoPSU.

Re: Intel is changing the future of power supplies with its ATX12VO spec

#188

Post by jhasse »

chrisseaton wrote: post #122
jhasse wrote: post #121

Earlier quoted context omitted.

Sure, market share changes slowly as people keep their PCs for more than 5 years (remember that Ryzen was released 3 years ago and only Ryzen 3000 really beats Intel). But AMD is dominating when you look at CPUs sold: https://www.reddit.com/r/AMD_Stock/comments/dbvs45/amd_score...

I think that’s a German hobby computer parts retailer. Won’t data centre sales dwarf that? I’m not sure you can use that as really representative of the market.

Data centers don't use ATX12V though.
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