nickwitha_k (he/him)

  • 5 Posts
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Joined 1 year ago
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Cake day: July 16th, 2023

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  • Is PD that much better?

    Yes, it really is. The USB spec for Type A connectors is 5V @ 1.5A for a max energy output of 7.5W. USB PD 3.0 (which requires the Type C connector) specs for 5V @ 3A (15W), but also provides additional optional mixes of 9V @ 3A (27W), 15V @ 3A (45W), 20V @ 3A (60W), and 20V @ 5A (100W). Adding to this, there is also now USB PD 3.1 EPR (Extended Power Range) which adds 28V @ 5A (140W), 36V @ 5A (180W), and 48V @ 5A (240W).

    So, 7.5W of available power vs up to 240W (supposing device and cable support), plus flexibility on negotiated power. This means that there is far more energy available to charge faster and the ability to power many more types of devices that require different voltages.

    But wait, there’s more. USB PD is also used to enable negotiation of USB Alternate Modes. Currently, only Thunderbolt, MHL, and DisplayPort alt modes are maintained but that’s still pretty awesome.








  • But even then, is the water truly consumed?

    Yes. People and crops can’t drink steam.

    Does it get contaminated with something like the cooling water of a nuclear power plant?

    That’s not a thing in nuclear plants that are functioning correctly. Water that may be evaporated is kept from contact with fissile material, by design, to prevent regional contamination. Now, Cold War era nuclear jet airplanes were a different matter.

    Or does the water just get warm and then either be pumped into a water body somewhere or ideally reused to heat homes?

    A minority of datacenters use water in such a way Helsinki is the only one that comes to mind. This would be an excellent way of reducing the environmental impacts but requires investments that corporations are seldom willing to make.

    There’s loads of problems with the energy consumption of AI, but I don’t think the water consumption is such a huge problem? Hopefully, anyway.

    Unfortunately, it is. Primarily due to climate change. Water insecurity is an an issue of increasing importance and some companies, like Nestlé (fuck Nestlé) are accelerating it for profit. Of vital importance to human lives is getting ahead of the problem, rather than trying to fix it when it inevitably becomes a disaster and millions are dying from thirst.