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  • What is the fastest hottest cheapest available CPU?

    From Adrian Caspersz@21:1/5 to All on Wed Dec 7 10:52:06 2022
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an
    electrical element.

    --
    Adrian C

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  • From Theo@21:1/5 to Adrian Caspersz on Wed Dec 7 11:49:13 2022
    Adrian Caspersz <[email protected]d> wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an electrical element.

    Look on ebay for old servers, and then look up their cpubenchmark.net
    scores. It's a tradeoff between price and performance. Older servers are typically more power hungry as a rule of thumb, and cheap, but not so fast.

    As far as performance goes, I'd probably be looking at the Xeon E5 and
    (rarer) E7 series (from 2011 onwards). The older Xeons (Ennnn, Xnnnn or
    just nnnn) are quite a lot slower (~2006-2010).

    Also worth bearing in mind idle v peak power: eg I have a dual Xeon E5-2670
    v1 mobo (2011): peak power 400W, idle power 100W. If you want a
    'thermostat' you can make it drop back to idle, but you can't get below 100W without turning it off.

    Old servers can be noisy, so you'll either want to have it somewhere that doesn't matter, or look at replacing the cooling with something quieter
    (that typically won't fit in the standard server enclosure). Old
    workstations often have server-grade processors in bulkier, less noisy
    cases.

    Worth looking for 'computer recyclers' near you, since a good part of the
    price of old kit is shipping. I'd imagine there might be some good bargains
    to be had nowadays, given the price of electricity has gone up so much companies will be clearing out power hungry kit.

    Also what do you plan to do with it? Ethereum mining on GPUs used to be a
    way to make some 'return' on your wasted power, but that's not a thing any more. Bitcoins are all custom ASICs these days. Not sure about other
    crypto coins. Maybe some of the other distributed computing 'challenges' (proteins, cancer, SETI, etc) might be more amenable to CPU rather than GPU compute.

    Theo

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  • From Marco Moock@21:1/5 to All on Wed Dec 7 12:15:39 2022
    Am 07.12.2022 um 10:52:06 Uhr schrieb Adrian Caspersz:

    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an electrical element.

    Maybe just get some Xeon Foster (NetBurst based (Pentium 4). They are
    very cheap and IIRC there exist mainboards with multiple sockets.

    https://en.wikipedia.org/wiki/List_of_Intel_Xeon_processors_(NetBurst-based)

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  • From [email protected]@21:1/5 to Adrian Caspersz on Wed Dec 7 20:35:04 2022
    Adrian Caspersz <[email protected]d> wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an electrical element.

    I've actually used old Bitcoin ASIC miners as space heaters before. They
    don't produce enough to cover the cost of the power needed to run them, but
    if you want to warm a room up, they'll do the job while producing a trickle
    of satoshis into your wallet. :)

    --
    _/_
    / v \ Scott Alfter (remove the obvious to send mail)
    (IIGS( https://alfter.us/ Top-posting!
    \_^_/ >What's the most annoying thing on Usenet?

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  • From Computer Nerd Kev@21:1/5 to Adrian Caspersz on Thu Dec 8 08:09:59 2022
    Adrian Caspersz <[email protected]d> wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an electrical element.

    So far as CPUs go, I'd recommend old servers. There are some
    Chinese motherboards available on Ebay/Aliexpress that are made for
    using old server CPUs/RAM in a desktop environment, they may be
    more convenient (smaller) to rig up compared to old server/
    workstation motherboards.

    Or if you're really lucky I guess you might find a bulk lot of old
    high-spec single-board-computers or bitcoin miners that would
    probably work out cheaper. But generally speaking even well
    out-dated models are over-priced when sold individually online.

    But a limiting factor here might be that you still need to keep the
    CPUs under their maximum operating temperature, so the temperature
    of the heated air will always be some amount cooler than that
    temperature. You can increase the volume of heated air by adding
    more CPUs, but not the temperature of the heated air (beyond a
    certain point). Also if your heater is sucking in air from the same
    space that it's heating, you'll have to make sure that the CPUs
    won't exceed their maximum temperature once they've warmed up the
    space they're in.

    --
    __ __
    #_ < |\| |< _#

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  • From Adrian Caspersz@21:1/5 to [email protected] on Fri Dec 9 07:39:53 2022
    On 07/12/2022 20:35, [email protected] wrote:
    Adrian Caspersz <[email protected]d> wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an
    electrical element.

    I've actually used old Bitcoin ASIC miners as space heaters before. They don't produce enough to cover the cost of the power needed to run them, but if you want to warm a room up, they'll do the job while producing a trickle of satoshis into your wallet. :)


    Yup, that's the aim :)

    --
    Adrian C

    --- SoupGate-Win32 v1.05
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  • From jaouad zarrabi@21:1/5 to All on Sat Dec 10 07:59:33 2022
    El viernes, 9 de diciembre de 2022 a las 8:39:55 UTC+1, Adrian Caspersz escribió:
    On 07/12/2022 20:35, [email protected] wrote:
    Adrian Caspersz <[email protected]d> wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an
    electrical element.

    I've actually used old Bitcoin ASIC miners as space heaters before. They don't produce enough to cover the cost of the power needed to run them, but
    if you want to warm a room up, they'll do the job while producing a trickle
    of satoshis into your wallet. :)

    Yup, that's the aim :)

    --
    Adrian C
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  • From Scott Dorsey@21:1/5 to [email protected] on Sun Dec 11 13:55:27 2022
    Adrian Caspersz <[email protected]d> wrote:
    On 07/12/2022 20:35, [email protected] wrote:

    I've actually used old Bitcoin ASIC miners as space heaters before. They
    don't produce enough to cover the cost of the power needed to run them, but >> if you want to warm a room up, they'll do the job while producing a trickle >> of satoshis into your wallet. :)


    Yup, that's the aim :)

    THE FUTURE IS VAX!

    DIGITAL HAS IT NOW!
    --scott

    --
    "C'est un Nagra. C'est suisse, et tres, tres precis."

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  • From Y A@21:1/5 to Adrian Caspersz on Sat Feb 11 08:10:30 2023
    Why do You need so much speed ?
    Average computers today are already enough fast.
    The genius lies in the programming.





    On Wednesday, December 7, 2022 at 12:52:09 PM UTC+2, Adrian Caspersz wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an electrical element.

    --
    Adrian C

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From [email protected]@21:1/5 to All on Mon Feb 13 20:02:34 2023
    Y A <[email protected]> top-posted (grr):
    On Wednesday, December 7, 2022 at 12:52:09 PM UTC+2, Adrian Caspersz wrote:
    I want to make an electric fan heater, but I also want it to do
    something else useful with the power in, other than just heating an
    electrical element.

    Why do You need so much speed ?
    Average computers today are already enough fast.
    The genius lies in the programming.

    ...until they aren't. I once had a Core 2 Quad that was blazing fast when I bought it in 2008. I used it at home for a few years, then I brought it in
    to work and used it a few years more. By 2018, even with the hard drive replaced with an SSD and more RAM added, it was starting to look a bit long
    in the tooth.

    It was increasingly bloated software, brought about by a mentality that
    "we'll just throw more hardware at it," that led to that shift.

    --
    _/_
    / v \ Scott Alfter (remove the obvious to send mail)
    (IIGS( https://alfter.us/ Top-posting!
    \_^_/ >What's the most annoying thing on Usenet?

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