Copper

Comments

• itrealgood@mander.xyz ⁨8⁩ ⁨hours⁩ ago

  Not a fan

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  • GreenKnight23@lemmy.world ⁨8⁩ ⁨hours⁩ ago

    the sound of silence

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  • ButteredBread@sh.itjust.works ⁨7⁩ ⁨hours⁩ ago

    That’s indeed not a fan. Did we even need to mention that? /j

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• BCsven@lemmy.ca ⁨12⁩ ⁨hours⁩ ago

  Till it all gets to temp then it won’t do much. It needs some more surface area to covect heat better.

  With enough fins you don’t need fans.

  Image

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  • Zachariah@lemmy.world ⁨11⁩ ⁨hours⁩ ago

    the other option is

    Image

    only fans

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  • cRazi_man@europe.pub ⁨11⁩ ⁨hours⁩ ago

    Would a slow small fan still make a huge difference to the cooling here? Completely passive cooling seems like something that would only make sense in very specific professional environments (like needing an ultra low sound floor in an audiology chamber or recording studio).

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    • fartographer@lemmy.world ⁨10⁩ ⁨hours⁩ ago

      I had a roommate who was getting his doctorate in chemical engineering, specifically focused on graphene. He was able to demonstrate how doping the materials in a heat sink to alter their ability to “release” heat, and then organizing these intentional hotspots along the length of the fins, you could create an active airflow using a stationary object.

      But then his lab manager killed his grant and instead put him on a project partnered with BMW to make their bumpers more marketable.

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    • BCsven@lemmy.ca ⁨7⁩ ⁨hours⁩ ago

      The case has an opening for a vertical fan but it is not needed unless you do heavy gaming and run a high end GPU. For video rendering and other tasks the fins are rated to keep it at a decent temp.

      I have good hearing, and a HDD spinning or even a “silent” fan is still audible droning noise to me.

      This build is totally silent. The PSU is over-rated on purpose because it has a below 30% max draw mode that is fanless.
      So this case makes 0 noise.

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  • Gork@sopuli.xyz ⁨11⁩ ⁨hours⁩ ago

    With big enough copper block it might not matter (like the size of a house, but of the good quality stuff not that shit Ea-Nasir sells).

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  • rain_enjoyer@sopuli.xyz ⁨10⁩ ⁨hours⁩ ago

    what is that white box on the bottom connected to

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    • dangrousperson@feddit.org ⁨7⁩ ⁨hours⁩ ago

      I think that would be a spot to connect a GPU to the heatsink as well

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    • MonkderVierte@lemmy.zip ⁨8⁩ ⁨hours⁩ ago

      Passive cooling fins.

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    • BCsven@lemmy.ca ⁨7⁩ ⁨hours⁩ ago

      The empty copper block is for a GPU, but I’m running this primarily as a silent server so I didn’t bother with the GPU since it has integrated Graphics.

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  • Canadian_Cabinet@lemmy.ca ⁨11⁩ ⁨hours⁩ ago

    Is your motherboard connected to two giant case-sized heatsinks? I’m struggling to see the big picture here

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    • radix@lemmy.world ⁨10⁩ ⁨hours⁩ ago

      Oops, all heatsink

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    • BCsven@lemmy.ca ⁨7⁩ ⁨hours⁩ ago

      Its a monsterlabo case, they made fanless heatsink systems…I think they may have gone out of business a few years back because a silent case is very niche.

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    • Syndication@lemmy.today ⁨11⁩ ⁨hours⁩ ago

      Right? I’m like wtf is this setup?

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• stoicmaverick@lemmy.world ⁨6⁩ ⁨hours⁩ ago

  Okay, who gets to be the lucky one to calculate the amount of time that thing could heat sink a pegged, modern, 120w TDP CPU before it throttles at 100C? I’ll give you a sticker.

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  • resipsaloquitur@lemmy.cafe ⁨2⁩ ⁨hours⁩ ago

    Nice try. I’m not googling “copper pegging” again.

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  • KSPAtlas@sopuli.xyz ⁨6⁩ ⁨hours⁩ ago

    Let’s assume the dimensions of the copper block are 40mm40mm160mm (I’m not taking the heat spreader into account here)

    That results in a volume of 256000mm3, or 256cm3

    Copper (at 20C) has a density of 8.935 g/cm3, so that’s roughly 2.28736kg of copper

    Copper has a specific heat capacity of 384.603 J/(kg K)

    Using E=cm∆t, we can figure out that it would take ≈ 70378J of energy to heat the copper block to 100C, starting at 20C

    With a TDP od 120W, that means it would take 586 seconds to heat the block to 100C, or 9m46s

    This is probably way off but I was bored

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    • SleeplessCityLights@programming.dev ⁨6⁩ ⁨hours⁩ ago

      Your napkin math is the best we have. We will make all decisions based on it.

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    • Contramuffin@lemmy.world ⁨6⁩ ⁨hours⁩ ago

      Hmm, I think at minimum calculus will need to be involved here. Because we can’t just assume that the heat is spread evenly in the copper - it’ll likely be hotter at the bottom, leading to thermal throttling earlier than expected. On the other hand, there’s going to be heat dissipation into the air, which will help cool the block somewhat

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    • potpotato@lemmy.world ⁨6⁩ ⁨hours⁩ ago

      Account for convective loses into air?

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  • Contramuffin@lemmy.world ⁨3⁩ ⁨hours⁩ ago

    Was bored, so made a simulation to figure it out.

    TLDR: 592.2 seconds, or 9 minutes and 52.2 seconds. Very similar to the other comment, so it appears temperature differentials and heat loss to the air are somewhat minor effects compared to the sheer heat mass of the block

    Assumptions:

    • Copper’s heat conductivity is 400 W/m-K, and specific heat is 0.4 J/g-K, and density is 9000 kg/m^3, and these values do not change over the range of temperatures
    • Air’s heat transfer coefficient is 20 W/m^2-K and does not change over the range of temperatures
    • The surrounding air does not change in temperature and remains at room temperature (25 C)
    • The input wattage is actually 120 W and not just random marketing bullshit
    • The copper block’s size is 4 cm x 4 cm x 16 cm (same as other comment)
    • The temperature within the copper block differs only by the vertical axis; it is assumed that temperature does not change if you move horizontally into the block

    Modeling conditions:

    • The block is sliced into 100 equally-sized slices, stacked vertically.
    • 120 W is input directly into the bottom slice
    • Heat transfer is modeled between each slice
    • Heat loss into the air is modeled for each slice (top slice has more heat loss due to more contact with the air)
    • Heat changes are calculated per millisecond
    • Final time is calculated is the total number of milliseconds it takes for the bottom slice to reach a temperature greater than 100 C

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    • stoicmaverick@lemmy.world ⁨42⁩ ⁨minutes⁩ ago

      Well goddamn… Ok. Go ahead and dm me your home address, phone number, social and/or tax id number, the name of the street you grew up on, the name of your favorite teacher, the IMEI number of your cellphone, a high resolution set of your fingerprints, and a list of your three greatest fears, and I’ll get your sticker sent over as soon as I can.

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    • Bahnd@lemmy.world ⁨46⁩ ⁨minutes⁩ ago

      You did the monster math.

      Respect.

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    • kahjtheundedicated@lemmy.world ⁨2⁩ ⁨hours⁩ ago

      Respect for taking the time to model that. Goes to show why heat sinks look the way they do, and not just big lumps of metal lol

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    • mnemonicmonkeys@sh.itjust.works ⁨2⁩ ⁨hours⁩ ago

      Numerical methods is cheating! Real men use PDE’s!

      /s of course, though I was kinda hoping you’d use PDE’s

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• aeronmelon@lemmy.world ⁨11⁩ ⁨hours⁩ ago

  Toblerone Gaming Heat Sink.

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  • StillAlive@piefed.world ⁨10⁩ ⁨hours⁩ ago

    Toblerone has one identifier, its triangular shape. ☝️🤓

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    • ruuster13@lemmy.zip ⁨7⁩ ⁨hours⁩ ago

      But there is another… the convection space between the fins.

      Image

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• kibiz0r@midwest.social ⁨9⁩ ⁨hours⁩ ago

  Customer

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• Jakylla@jlai.lu ⁨11⁩ ⁨hours⁩ ago

  A block of diamond would be even better (copper being at 401 W/mK, Diamond at 3320 W/(mK), almost 10x better)

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  • rockSlayer@lemmy.blahaj.zone ⁨11⁩ ⁨hours⁩ ago

    But only 3-5 diamonds are generated per chunk, requires an iron pickaxe, and usually doesn’t start appearing regularly until Y level 14.

    Meanwhile copper can have up to 16 veins of copper per chunk, requires a stone pickaxe, and appears most frequently at Y=48.

    Copper is clearly more accessible for making ore blocks. Wait a sec, this isn’t !minecraft@lemmy.world

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    • kernelle@lemmy.dbzer0.com ⁨9⁩ ⁨hours⁩ ago

      Back to the mines with you, you’re yearning

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    • Truscape@lemmy.blahaj.zone ⁨8⁩ ⁨hours⁩ ago

      This is after 1.18, Diamonds are most commonly found at Y=-54 now.

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  • mnemonicmonkeys@sh.itjust.works ⁨2⁩ ⁨hours⁩ ago

    It has higher conduction but it’s specific heat capacity is worse, at least per mol

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  • Zachariah@lemmy.world ⁨11⁩ ⁨hours⁩ ago

    with the way prices are going, carbon based heat dissipation may become the preferred option

    how pretty would it be if it was a tree-like crystal structure

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  • BreadOven@lemmy.world ⁨5⁩ ⁨hours⁩ ago

    Silver would be more feasible though. It’s next best after diamond.

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  • SCmSTR@lemmy.blahaj.zone ⁨8⁩ ⁨hours⁩ ago

    What’s the K

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    • Dpek@lemmy.zip ⁨6⁩ ⁨hours⁩ ago

      Gonna assume kelvin

      Think C but what if zero was actualy zero

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    • scutiger@lemmy.world ⁨7⁩ ⁨hours⁩ ago

      Ketamine

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    • LunarLoony@lemmy.sdf.org ⁨4⁩ ⁨hours⁩ ago

      Kooling, obviously

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• Lushed_Lungfish@lemmy.ca ⁨4⁩ ⁨hours⁩ ago

  Yeah man, I dunno what that whiny bitch Nanni was on, but this some good quality copper.

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• Tylerdurdon@lemmy.world ⁨4⁩ ⁨hours⁩ ago

  Copper? I don’t even know 'er!

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• MonkderVierte@lemmy.zip ⁨8⁩ ⁨hours⁩ ago

  But is it really copper?

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  • Dpek@lemmy.zip ⁨6⁩ ⁨hours⁩ ago

    Lets hope CCA doesnt strike again

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• Sam_Bass@lemmy.world ⁨8⁩ ⁨hours⁩ ago

  so how many grams is that?

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• sirico@feddit.uk ⁨7⁩ ⁨hours⁩ ago

  Saturation for the nation

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• deliriousdreams@fedia.io ⁨10⁩ ⁨hours⁩ ago

  I am suddenly reminded of that Tech Ingredients video on YouTube where he turned a A/C window unit into a liquid heat pump.

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• jackeroni@lemmy.ml ⁨11⁩ ⁨hours⁩ ago

  NO that swindler gave me subpar copper!

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  • vaultdweller013@sh.itjust.works ⁨7⁩ ⁨hours⁩ ago

    You didn’t pay him for a previous services. Ya get what ya pay for.

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  • SkaveRat@discuss.tchncs.de ⁨10⁩ ⁨hours⁩ ago

    I don’t believe you. You probably didn’t even write a support ticket about it

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