• 205 Posts
  • 2.42K Comments
Joined 2 年前
cake
Cake day: 2023年6月9日

help-circle

  • Edit 2: Eheran pointed out I screwed up the math. Correct total energy output is 13μWh. A very, very, very small amount of energy.

    (2x1015 W) * (25s/1x1018) * (1 h/ 3600 s) = 13μWh


    Previous bad math:

    spoiler

    The key thing here is the burst lasted for “25 quintillionths of a second long”. Meaning it had a total output energy of 180 W/h, or how much energy a standard US space heater (1.5KW) outputs if it was on for 7.2 minutes.

    That is a pretty impressive amount of power coming in instantly to a small spot. Would leave basically zero time for it to dissipate into surrounding materials.

    Edit: Fixed the math. (I hope) (2x1015 W) * (25/1x1018 s) * (3600 s / 1 h) = 180W/h









  • BombOmOm@lemmy.worldtoSelfhosted@lemmy.worldSimple NAS hardware for home use?
    link
    fedilink
    English
    arrow-up
    2
    arrow-down
    1
    ·
    edit-2
    2 天前

    A note on the fans specifically, you can buy quiet fans. In general, the larger the fan, the lower the speed you can run it and the quieter it is. You can also setup fan curves so they are only doing anything of note when the computer is pumping out heat (given your statements, that would be basically never).

    The electricity usage is a pretty notable thing. Though, if you take the graphics card out of a desktop (use integrated graphics, a dedicated graphics card in a server is just wasted electricity) and set the OS to power saver (this mostly means it won’t boost the CPU to higher clocks), it really won’t use much power. Compared to buying dedicated NAS hardware, you may never recoup the energy costs between the hardware you have and the lower-power hardware you need to buy.

    If you don’t already own one, a Kill-A-Watt is a great tool to have. Tells you how much energy a device is using. Biggest thing I found was my TV had a vampire draw of 15W. Literally draws 15W while off. This got the TV put on a power strip I turn off when I’m not using it.

    Now, with all that said, sometimes you just want what you want. And there is nothing wrong with that. My goal here is to make sure you don’t feel you have to pick one option over the other.





  • What are you intending to run on this server?

    • If it is just PiHole, you can basically get the weakest computer you can find.

    • If you want lots of storage space, you will need to make sure you have a case and motherboard that will accommodate the drives.

    • If you are running encryption on those drives as well, you will need a CPU more powerful than what comes in a Pi, but nothing crazy.

    • If you are running lots and lots of VMs, you will want lots of RAM. A linux VM will use maybe a few GB each depending on what software each is running internally, a windows vm will use a bit more.

    • If you are doing AI workloads, you will need a graphics card.


  • They are spending shitloads of money on weapons that immediately get blown up, this pushes up GDP figures. What doesn’t go up is productive work/investments that further the interest of the people of the nation, investments that would continue to reap rewards in the future.

    Obviously this isn’t to say that all military spending is bad, far from it, but Russia is dumping piles money into a war they started and never needed to happen. They aren’t defending themselves from some threat, they are simply burning money and resources.