geekhack

geekhack Community => Off Topic => Topic started by: tp4tissue on Thu, 22 November 2018, 11:56:01

Title: Used Mining Cards.. Coin's crashed.. Butttttt
Post by: tp4tissue on Thu, 22 November 2018, 11:56:01

Everyone's excited to get dem cheepie retired mining cards..


Some things to cover..

Essentially,  These cards average 8-15x the use amplification.


For example, a manufacturer may be targeting 4hr gaming per day for 10yrs durability.

No one is going to use it for 10 years, but that's the overhead.


A game has up and downs, but usually doesn't consistently peak in power draw.


Mining environment is different,  it's always 100% , always hot , 24/7.


So in just 1 to 2 years,  they're essentially already near the design lifespan.




What price should you pay,  given the high probability of card failure..


1070 gtx @ $150   is a fair compromise for the risk involved.. 

However,  how the market reacts is not dependent on this , so there's always going to be brand premium.



Final assessment::  BEWARE !!

The silicon is nearly immortal, but the power delivery circuits are NOT


[attachimg=1]

[attachimg=2]

Title: Re: Used Mining Cards.. Coin's crashed.. Butttttt
Post by: noisyturtle on Thu, 22 November 2018, 18:13:15

who the **** still mines btc as a casual hobby? let that garbage die

Title: Re: Used Mining Cards.. Coin's crashed.. Butttttt
Post by: Findecanor on Thu, 22 November 2018, 21:58:36

You should not support cryptocurrency miners by buying their old cards.

Otherwise, the usual way in accounting to calculate the value of an asset is to divide the purchase-price by the number of years of expected lifetime and subtract that every year it is used.
So, if the expected lifetime for a new card is 10 years, and the used card is expected to last one year, then it would be worth 1/10 of the original price.
The GeForce GTX1070 had a MSRP of $379. A fair price for that type of card used in cryptocurrency miner rig would therefore be $37.90.

Title: Re: Used Mining Cards.. Coin's crashed.. Butttttt
Post by: tp4tissue on Thu, 22 November 2018, 22:09:07

Quote from: Findecanor on Thu, 22 November 2018, 21:58:36

You should not support cryptocurrency miners by buying their old cards.

Otherwise, the usual way in accounting to calculate the value of an asset is to divide the purchase-price by the number of years of expected lifetime and subtract that every year it is used.
So, if the expected lifetime for a new card is 10 years, and the used card is expected to last one year, then it would be worth 1/10 of the original price.
The GeForce GTX1070 had a MSRP of $379. A fair price for that type of card used in cryptocurrency miner rig would therefore be $37.90.

They're being sold by the Kilogram in China right now, hahaha... from defunct mining companies.

Title: Re: Used Mining Cards.. Coin's crashed.. Butttttt
Post by: Little4Real on Sun, 25 November 2018, 16:24:31

This ain't it chief