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Author Topic: Dedicated mining rig Mhash/s to $ query  (Read 1781 times)
trentzb
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April 10, 2011, 01:34:19 AM
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Electricity and recurring costs aside, would anyone care to share what their Mhash/s per $1 USD dedicated rig investment is? I am curious to learn how diverse (or not) the investments are. I am referring to all hardware aggregate investment into a dedicated rig (or rigs).

Our first couple rigs are at 1.23 Mhash/s per $1 which is a little lower than our goal.
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Littleshop
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April 10, 2011, 02:17:32 AM
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Electricity and recurring costs aside, would anyone care to share what their Mhash/s per $1 USD dedicated rig investment is? I am curious to learn how diverse (or not) the investments are. I am referring to all hardware aggregate investment into a dedicated rig (or rigs).

Our first couple rigs are at 1.23 Mhash/s per $1 which is a little lower than our goal.


My first three rigs were just video card investments dropped into scavenged units.  An 5870 for $200, so about 1.5 Mhash/s per $1 and a 5830 for $130 similar results.  

Now I have built my first dedicated box for two HD 5870's when I get them.  I spent $75 for the case (will be another story/post!) $47 for the power supply, $90 for a dual slot x16 MB, $39 for a sempron (unlocked to two cores and 3.1ghz),  $60 for 4gb ram.  All other parts were existing ones I had (dvd/Hd).  Assuming I pay $200 for each of the next HD 5870's it will be $1 for 1Mhash/s.


At the current rate of difficulty increase this hardware WILL NOT pay for itself or it will take nearly a year.  That is ok.  When it stops being a net profit it will become my next desktop.  I just will let it sleep when it is not in use.  Smiley

Jaime Frontero
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April 10, 2011, 02:34:46 AM
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I spent $75 for the case (will be another story/post!) $35 for the power supply...

yikes!  i just cobbled together a similar system (are you using the msi 870A-G54 mobo?) - except 5850s instead of 5870s.  but i spent $125 on a cooler master 750W GX PS (and then got a $35 rebate).  where did you find something that'll run those cards for 35 bucks?  i want one for my next miner...
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April 10, 2011, 02:42:14 AM
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I spent $75 for the case (will be another story/post!) $35 for the power supply...

yikes!  i just cobbled together a similar system (are you using the msi 870A-G54 mobo?) - except 5850s instead of 5870s.  but i spent $125 on a cooler master 750W GX PS (and then got a $35 rebate).  where did you find something that'll run those cards for 35 bucks?  i want one for my next miner...
Sorry, I did misquote on that one (corrected in original post)  I spent $32+15 shipping for $47 total for a Zalman 700W. 

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250796169498&ssPageName=STRK:MEWNX:IT




Jaime Frontero
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April 10, 2011, 03:49:29 AM
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wow.  that's an amazing price, even considering you'll have buy a couple more PCIe 6-pin power cables.  good for you!

zalman makes decent stuff.  i have a couple of their coolers on my desktop.
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