Bitcoin Forum

Economy => Computer hardware => Topic started by: cryptopi on August 06, 2013, 02:56:53 AM



Title: Selling 2.4+ Mhash Miner | Works Instantly | Free Setup if Desired
Post by: cryptopi on August 06, 2013, 02:56:53 AM
Hello all :).
I just built myself a miner (roughly 2 weeks ago) and since then have fine tuned it to achieve 2.4+ Mhash all time time on 4x7950s. Now I have just decided that I would like to sell it to whoever wants it. My rig has the following parts:

  • rosewill 1300 watt PSU - http://www.amazon.com/Rosewill-Certified-ATX12V-EPS12V-LIGHTNING-1300/dp/B0057JFOKU
  • corsair ax850 850 watt PSU
  • msi motherboard - http://www.amazon.com/dp/B007QWIA52/ref=as_li_ss_til?tag=onsimobicomps-20&camp=0&creative=0&linkCode=as4&creativeASIN=B007QWIA52&adid=0PFP81V7KE692HCNM2EZ
  • 4 sapphire vapor x 7950 GPUs - http://www.amazon.com/Sapphire-DL-DVI-I-SL-DVI-D-PCI-Express-11196-09-40G/dp/B009MML1UA/ref=sr_1_1?ie=UTF8&qid=1373516838&sr=8-1&keywords=sapphire+7950
  • i7 3770k processor - http://www.amazon.com/Intel-i7-3770K-Quad-Core-Processor-Cache/dp/B007SZ0EOW/ref=sr_1_1?s=electronics&ie=UTF8&qid=1373517257&sr=1-1&keywords=i7+3770k
  • 16GB corsair vengeance RAM - http://www.amazon.com/Corsair-Vengeance-Desktop-Memory-CMZ16GX3M2A1600C10/dp/B006EWUO22
  • 4 powered riser cables (4 1x to 16x)
  • western digital 1 TB HDD
  • windows 8 64 bit
  • a milk crate case
  • add2psu adapter to join the PSUs and prevent grounding problems

Because of the parts in my rig, it can mine pretty much any coin you want, including CPU coins, scrypt, SHA-256, etc. I am asking for roughly $2400+ for my rig plus $100 shipping to your location. I accept payment in BTC, LTC, and USD as well and I am willing to use escrow if desired. The rig is open-air for maximum cooling and uses windows 8 so it is easy to setup and I can provide additional support if desired. In addition, since it is running windows 8 and because the motherboard supports it, this rig can be upgraded to utilize 6 GPUs in the future for more hash power.

I would like to use an auction-style listing so please start the bidding at $2500 and please use at least 0.1BTC increments while bidding. If you feel that that is too high, please make your offer and please keep in mind that it is a brand new rig.

Thanks and if you have any questions please do not hesitate to ask :)

Picture of rig:
http://i.imgbox.com/abg4DVXW.jpg


Title: Re: Selling 2.4+ Mhash Miner | Works Instantly | Free Setup if Desired
Post by: hendo420 on August 06, 2013, 03:10:37 AM
You went a little overkill on the CPU/Ram.
You can efficiently mine with a $30 single core CPU and a $30 8gb stick of DDR3 Ram.
You don't need a 1tb hard drive. You can mine with an old 40gb sata hd.
I dont know anyone that pays for windows, bootleg that shit or go Linux.
I dont think you need a 2nd PSU, I run 3x of thoes same 7950s on a 1050w XFX PSU, 1300w should be plenty especially if you undervolt.
I pull at minimum 670kh/s off of the same 7950s you have listed making a 4 card rig capable of 2,700kh/s. This is overclocked and undervolted and stable as a brick shit house.

Just some suggestions for future builds. :D


Title: Re: Selling 2.4+ Mhash Miner | Works Instantly | Free Setup if Desired
Post by: cryptopi on August 06, 2013, 03:14:00 AM
You went a little overkill on the CPU/Ram.
You can efficiently mine with a $30 single core CPU and a $30 8gb stick of DDR3 Ram.

I know; the CPU was for XPM, etc and currently it makes roughly $4 per day so if it continues like that, the CPU should pay for itself in roughly 80 days. It could also be useful considering the high amounts of CPU only coins being released currently (relatively speaking). I went overkill on the RAM because if the buyer decides to upgrade to 6 GPUs, he could potentially use more than that with reaper and such so I wanted to prepare for that contingency.

Thanks


Title: Re: Selling 2.4+ Mhash Miner | Works Instantly | Free Setup if Desired
Post by: cryptopi on August 06, 2013, 03:23:07 AM
You went a little overkill on the CPU/Ram.
You can efficiently mine with a $30 single core CPU and a $30 8gb stick of DDR3 Ram.
You don't need a 1tb hard drive. You can mine with an old 40gb sata hd.
I dont know anyone that pays for windows, bootleg that shit or go Linux.
I dont think you need a 2nd PSU, I run 3x of thoes same 7950s on a 1050w XFX PSU, 1300w should be plenty especially if you undervolt.
I pull at minimum 670kh/s off of the same 7950s you have listed making a 4 card rig capable of 2,700kh/s. This is overclocked and undervolted and stable as a brick shit house.

Just some suggestions for future builds. :D

Thanks for the suggestions, I wanted to build something above minimum specs. Also, I paid for windows because I do not like to steal things, digitally or otherwise. I also went with a 1 TB HDD because blockchains can be large for solo mining. In addition, with regards to the PSUs, they run most efficiently when they are under partial load (roughly 50%) and that is part of the reason why I have roughly twice the power needed. This way, it is as power efficient as I can make it and it also makes room for the buyer to add more GPUs in the future if they choose to.

But thanks for the suggestions :D