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Comment by dabinat | Hacker News Reader

This is the #1 reason why I haven’t upgraded my 2080 Ti. Using my laser printer while my computer is on (even if it’s idle) already makes my UPS freak out.

But NVIDIA is claiming that the 5070 is equivalent to the 4090, so maybe they’re expecting you to wait a generation and get the lower card if you care about TDP? Although I suspect that equivalence only applies to gaming; probably for ML you’d still need the higher-tier card.

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The big grain of salt with that "the 5070 performs like a 4090" is that it is talking about having the card fake in 3 extra frames for each one it properly generates. In terms of actual performance boost a 5070 is about 10% faster than a 4070.

Source for your 10% number?

I heard them say that in the Hardware Unboxed youtube video yesterday.

I think it's this one https://youtu.be/olfgrLqtXEo

I don’t see any testing performed in that video. Did I miss it?

No testing, they estimated from the available information.

I think people are speculating based on graphs Nvidia has on their product page.

According to Nvidia [0], DLSS4 with Multi Frame Generation means "15 out of 16 pixels are generated by AI". Even that "original" first out of four frames is rendered in 1080p and AI upscaled. So it's not just 3 extra frames, it's also 75% of the original one.

[0] https://www.nvidia.com/en-us/geforce/news/dlss4-multi-frame-...

Why would you have your laser printer connected to your UPS?

Does a laser printer need to be connected to a UPS?

It's not connected to the UPS directly, it's causing voltage dip on the circuit tripping the UPS.

Faulty iron in another room fried my LaserJet. UPS isn't just for loss of power, it should also protect from power spikes. Btw. printer was connected to a (cheap) surge protector strip which didn't help. On positive side nothing else was fried and laser was fixed for 40 euros.

Is it ironic that the electrically expensive part of the LaserJet, the fused, is pretty much an iron in a different format?

https://www.inkguides.com/printer-fuser/

I would be careful connecting laser printers to consumer UPS products. On paper all the numbers may line up, but I don't know why you'd want to if you could otherwise avoid it.

If the printer causes your UPS to trip when merely sharing the circuit, imagine the impact to the semiconductors and other active elements when connected as a protected load.

Your UPS is improperly sized. A 5kW Victron Multiplus II with one Pylontech US5000 would cost you around €1600 and should be able to carry all your house, not just your printer.

Thanks for those recommendations. From a few minutes of searching, looks like they would cost 1.5x to 2x that in USA.

We decided to start very small, because we couldn't figure out from the websites of various backup energy installers who was least likely to grossly inflate specs and prices. So, we recently bought a low-end expandable Anker Solix C1000 for around $500 USD as manual reserve power, mainly for the fridge. It seems to be intended more for "glamping", but Anker has good reputation for various unrelated products.

That’s because you have a Brother laser printer which charges its capacitors in the least graceful way possible.

Please expand, I am intrigued!

This happens with my Samsung laser printer too, is it not all laser printers?

It's mostly the fuser that is sucking down all the power. In some models, it will flip on and off very quickly to provide a fast warm up (low thermal mass). You can often observe the impact of this in the lights flickering.

If my Brother laser printer starts while I have the ceiling fan going on the same circuit, the breaker will trip. That's the only thing in my house that will do it. It must be a huge momentary current draw.

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