NOTE:

To save everybody time and trouble:

I think I have a committed buyer for my GPU farm.

I will update the thread as sold when I recieve payment or other mark the thread active if the deal does not close.

Planman

/NOTE

I am going to need to travel and so I am selling a turn-key GPU farm. Please PM me if interested.

This is a turn key mining operation: Running rigs including all hardware and misc bits. You only need add a monitor, keyboard, and ethernet cables.

5 rigs running in custom frames. 1 rig is running in a benchtop/flat layout (used for mining and for checking out new cards).

Everything has 1000 watt power supplies, All the motherboards except 1 are new Gigabyte boards less than 60 days old, 4GB ram, Sata hard drives, and AMD Sempron or Dual Core AM3 socket processors. 1 of the rigs has an Intel based motherboard I bought used off ebay with 2GB ram and runs fine. Several of the frames have additional fans to keep the air moving.

The rigs are running 20GPU right now. Later today I have a card arriving that might make it 21 GPU total.

I prefer stability and low energy costs so I don't severely clock my cards. On a few of the cards whose fans stopped working I strapped on 120mm fans which look funny but provide great cooling.

I have 2 5970's and the rest of the cards are about a mix of 5870's, 5850's, and 5830's. There might be 1 or 2 68xx series cards in there.

Everything is up and running stable. Most rigs I reboot every few days whether or not they need it when I shift production from one coin to another. I easily get past 6,000 M/Khash sustained with no drama. With aggressive overclocking production could be cranked up higher. I run CGminer and have scripts to run bit or litcoin. Right now most of my machines are running Litecoins.

I just got in an 8 port KVM switch with cables I will throw in for free with the farm.

I would strongly prefer to sell the entire group of rigs intact and running to a single buyer as a single turn key operation.

Mid-atlantic delivery, setup, and training is negotiable. Payment accepted in a variety of formats. Seller is a Maryland C corporation.

**** NOT INTERESTED IN PARTING OUT THE RIGS AT THIS TIME  *****

Please let me know if you are interested!

Thank you,

Planman

Hello,

I am going to buy some 7970's to do some bitcoin and litecoin mining. The hash rate per $ seems to match the 7850/7870 cards, so I figure I might as well just buy 7970's and get higher density and maybe better resale.

I know ASIC are coming. Someday... but I am going to jump in anyway because I can buy 7970's now and do litecoin if all else fails

Right now I am leaning toward the MSI 7970

Does anyone have any first hand experience with the different versions of the 7970? I am specifically trying to figure out which manufacturer and model of 7970.

I would welcome input from anyone who has mined them or who has other input about them.

Thank you,

Planman

Hello,

I am building a new rig.

I am looking to buy 5830/5850/5870's shipped to Maryland.

Will consider other models as well

Ugly/no-fan but still-mining-well cards are OK

If you are selling, please send me a PM and let me know what you have!

Quick decisions, prompt payment!


Thank you!

Hello,

I would like to buy some additional GPU's and can pay by Litecoin and/or cash.

If you have cards that work fine, please get in touch. Broken fans / ugly is OK with me as long as they work.

I will pull down this message when I have bought up the number of cards I am looking for.

Right now I could use 4-6 more cards and was looking to pay $70-90 (depending on model) for good condition cards. Broken fan/ugly cards $40-60 depending on the model.

I could also use a deal on the riser cables...

Let's deal

Hello,

I am running cgminer 2.10.5 and I am getting the following message when I run cgminer -n

[2013-02-23 14:25:00] CL Platform 0 vendor: Advanced Micro Devices, Inc.

[2013-02-23 14:25:00] CL Platform 0 name: AMD Accelerated Parallel Processing

[2013-02-23 14:25:00] CL Platform 0 version: OpenCL 1.2 AMD-APP (1084.4)

[2013-02-23 14:25:00] Platform 0 devices: 1
[2013-02-23 14:25:00]  0       Cypress
[2013-02-23 14:25:00] Failed to ADL_Adapter_ID_Get. Error -1

[2013-02-23 14:25:00] Failed to ADL_Adapter_ID_Get. Error -1

[2013-02-23 14:25:00] GPU 0 ATI Radeon HD 5800 Series hardware monitoring enabl
d
[2013-02-23 14:25:00] 1 GPU devices max detected

Is this the time I should use the -gpu-map command? Right now I just keep crashing the driver.

Help from anyone would be appreciated greatly !

Thanks

Charles

Hello Everyone,

The hash rate on one of 5850s has suddenly dropped after running drama free for an extended time.

I run 1 x 5830, 2 x5850's, and one 6870 in a single rig. I Run CGMINER 2.10.5, Windows 7, and the latest drivers from AMD. I mine litecloins.

The Khash rate has been unchanged for 30 days since I setup the rig. I take notes and pictures to document my numbers.

For the last month my hash rates were

5830  --  299-301 Khash  73C
5850  --  381-384 Khash  72C
5850  --  381-384 Khash  72C
6870  --  297-299 Khash  73C

Windows and all other auto-updates are turned off so far as I know.

Suddenly this morning the hash rate dropped. Here's is what I found:

5830  --  299-301 Khash  73C
5850  --  299-301 Khash  72C  <====Changed from 381-384
5850  --  381-384 Khash  72C
6870  --  297-299 Khash  73C

I literally had not touched the machine...

First I hit Q and shutdown, power off, reboot, and relaunch. Still stuck at 300Khash

Second I check my command line (below) and my command line is unchanged:

cgminer --scrypt -o http://ltc.pool.ext:port -u user -password x --auto-fan -I 19 -g 1 -w 256,256,256,256 --lookup-gap 2,2,2,2 --temp-target 75,75,75,75 --temp-overheat 85,85,85,85 --thread-concurrency 8192,8000,8000,8000 --gpu-engine 950,915,915,915 --gpu-memclock 900,1100,1100,1200 --failover-only

(I have run this command line unchanged for weeks, open to tuning suggestions but mainly trying to understand the drop in hash rate first)

Third I restarted CGminer, the used <G> <C> 2 to check the GPU speed of GPU 1 (the slow 5850). The GPU speed is 725! I set the GPU speed to 915 but no increase in hash AND when I recheck the card in cgminer we are still at GPU speed of 725 and memory of 1000.

I exited CGminer and ran Sapphire Tweak. Tweak show the GPU at 915! So I restart CGMINER and recheck the card. GPU is back down to 725/1000. Exit, check Sappire abd Sapphire Tweak says 915/1100!

Restart CGminer and back to 725/1000

I delete all the ,bin files in the cgminer software folder and restart using the above command line.... and the 585- is back to 725/1000.


Poweroffs, reboots, even minor tweaking of the command libe have failed.

Does anyone have any suggestions? What did I miss?

Thank you,

Charles