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

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111–120 of 188 posts

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

#111

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 on 5v if I need it to be quieter and I don't have any PWM headers available, but that's about it.

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

#113
post #94
post #34

Earlier quoted context omitted.

10-gauge is rated for 30A, though that's 3.6mm.

Actually the limiting factor is the amperage rating of the molex terminals ("pins") that make the physical contact. I have expertise in this area back from the days of Bitcoin GPU mining where I built custom cables that I crimped myself after buying the molex housings, molex terminals, and wire. Each individual terminal, formally called a Molex mini-fit junior terminal, is rated either 7.0A (typical for those with 2…

Just looked at the ATX12VO spec and it mentions the max current per pin, page 12: "the guideline to follow is 6-8 Amps per pin"

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

#114

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 just bought a 1440p ViewSonic with an external brick.

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

#115

Earlier quoted context omitted.

I agree it's delusional, but to give some hard data, Mercury Research published its quarterly findings on x86 market share as of Q4 2019[0]. Specifically: - On the server side, AMD market share is only 4.5% (up by 1.4 percentage point from last year) - For desktop, market share is 18.3%, up by 2.4 pp from last year. - For laptop, market share is 16.2%, up by 4.0 pp from last year. - For overall x86 chips, market shar…

> Maybe in 4-5 years, AMD will be the dominant player. But it's still too early to call them this. Highly unlikely. This is AMD's prime time because Intel screwed up, and they've peaked at 15%. I predict Intel to gain the pace in a few years and dominate the market once again.

Why do you think they have peaked when Intel hasn't come up with an answer yet?

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

#116
post #76

Earlier quoted context omitted.

I'm just waiting for electric vehicles and their technology to invade the van and RV market. It would be really cool to have a solar/battery powered vehicle you can power from DC. A bus-sized RV could easily generate 5kw from current solar panels just on it's roof. Current RVs do have both 110v AC and 12v DC systems, but they're not easily integrated. 12v is too low to power bigger stuff like air conditioners (1500 w…

Electric vehicles are a long way from the sort of mileage that would allow them to effectively replace vans and RVs. We routinely drive 5-800 miles in a day in our van. This isn't going to be possible until battery replacement takes over from battery charging. And yes, our van has 120VAC (1kW) available, but I prefer to use it only for things where's there no alternative (e.g. our toaster, or recharging laptops, sigh…

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 miles in a day (regardless of power source) that's a really hard trip. I find 300 miles in the saddle taxing and 150-200 lots nicer. Leave, drive and arrive during daylight hours and enjoy the trip.

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

#117
post #37

Earlier quoted context omitted.

If your goal is to game or work during a power outage, sure. If your goal is just to protect your data from sudden termination, then having a PSU with a built in UPS is quite nice.

Being able to power any external device (like a hard drive) or to be able to cleanly exit from whatever you're working on if you happen to be present (with a monitor) are both pursuant to these goals. The average PC or workstation isn't configured for a clean exit just because the UPS said it's time. Bridging momentary outages is also useful where that's common, disregarding data loss.

They ought to be able to exit cleanly in time... that's what hibernation is for.

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

#118
post #109

Earlier quoted context omitted.

Your monitor shouldn't draw 130W at idle. My 34" monitor is ~3W in sleep mode, 34W when on. Even my eight year old 55" TV only draws 90W when on.

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.

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

#119

Earlier quoted context omitted.

Being able to power any external device (like a hard drive) or to be able to cleanly exit from whatever you're working on if you happen to be present (with a monitor) are both pursuant to these goals. The average PC or workstation isn't configured for a clean exit just because the UPS said it's time. Bridging momentary outages is also useful where that's common, disregarding data loss.

They ought to be able to exit cleanly in time... that's what hibernation is for.

What they are saying is that in the case with their setup they can't trigger shutdown or hibernation without a backed up KVM.

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

#120

> PSU vendors don’t want to release ATX12VO products for DIY builders until there are motherboards that support ATX12VO. Motherboard vendors don’t want to create products until power supply makers support them. Seems like that could be addressed with one of two adapters: - A passive adapter cable with a female ATX connector (with the 3.3V and 5V pins disconnected) and male ATX12VO connector - An active adapter cable/…

> An active adapter cable/board with a female ATX12VO connector, the necessary circuits to step voltages down to 3.3V and 5V, and a male ATX connector.

I think this will definitely happen, as supplies of classic ATX PSUs start to dry up, and people need to keep powering their old machines. This situation already exists for old AT style vintage machines, being powered by ATX PSUs.

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