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Economy => Computer hardware => Topic started by: mike85123 on April 19, 2012, 04:16:51 AM



Title: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 19, 2012, 04:16:51 AM
I have 5 rigs total for sale.

Specs for each:
MSI 890FXA-GD70 Motherboard
Athlon II X2 245 or AMD Sempron 140
2GB GSkill DDR3
850 Watt Corsair TX850 V2
4x 6870 (2 plugged direct into MB and 2 using PCI-E x16 extenders - for better airflow)

They aren't in cases, I have them sitting on a 2 shelf wire rack (maybe 2ft x 4ft) so there are 4 rigs on the shelf with fans pushing and pulling from both sides. The are all superstable.

They are all running win7 with GUIMiner 2012.02.19 and LogMeIn (haven't needed to see them in quite some time - I sporadically check on them with logmein).

Rig 1: 1.197GHs - 1,371,626 shares since GUIMiner Update
Rig 2: This doubles as my gaming machine and not for sale
Rig 3: 1.214GHs - 575,707 shares since last reboot
Rig 4: 1.196GHs - 1,369,556 shares since GUIMiner Update
Rig 5: 1.242GHs - 1,424,775 shares since GUIMiner Update (This rig has 3x 6870 and 1x 5850 - 6870s are running 299.4 Mhash and the 5850 is running at 344.4 Mhash)
Rig 6: 1.203Hs - 1,378,239 shares since GUIMiner Update

1,4,5,6 have been running non stop for much longer than the shares above. Their stats reset when I updated GUIMiner on 2/20. Rig 3 was rebooted about 3 weeks ago when I had to move some wires.  They are all very stable. Only reason I would part with them is for the rightrice and to get the wife off my ass about the heat and fan noise.

I am located in Ohio (to figure shipping cost). I have all original boxes, manuals, cd's, everything. Let me know if you (or anyone else) is interested. I am willing to take all offers into consideration.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Miner612 on April 19, 2012, 04:22:00 AM
Yikes, 6870 uses so much power!  Otherwise I would be interested.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 19, 2012, 12:25:11 PM
Yikes? I am pretty sure they aren't terrible on power (even according to the wiki card comparison).

My 6870's are better on power than my 5850s.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Miner612 on April 19, 2012, 07:01:18 PM
Yikes? I am pretty sure they aren't terrible on power (even according to the wiki card comparison).

My 6870's are better on power than my 5850s.

uuuggghhhhh ... 5850 is far more power efficient than 6870.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 20, 2012, 08:26:00 PM
Okay, so we know Miner 612 isn't interested... Anyone else? Make an offer for one or a couple.  I may let them go cheap to shut the wife up.

Mike


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: quattro on April 21, 2012, 12:27:51 AM
Yikes, 6870 uses so much power!  Otherwise I would be interested.

You're dead wrong ... in the reference design format, they're the hidden gem of the mining GPUs for both MH/$ and  MH/w and availability/reliability.  No card beats them, even the 7000 series in terms of both MH/$ and MH/w and availability.

They could be snatched up for the same price as the power hungry 5830s.  I was buying batches of 8 cards weekly @ $135 shipped in q1 2011.

Rigs with 4x 6870s set up properly get 2.3 MH/w and are easy to keep cool.  I haven't touched my Win7 rigs for over 6 months.

6870s are still you're best bang for the buck hands down.  Good luck finding a 5850 without the fans that die after a month(BTDT).


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 21, 2012, 09:01:28 PM
@quattro, how are you getting an extra gh/s out of your 4x6870 rigs over me? What kind of setup are you running.

EDIT: I misread that the same as mousepotato. I knew 600Mh/s sounded like way too much out of a 6870.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Mousepotato on April 22, 2012, 08:21:50 AM
@quattro, how are you getting an extra gh/s out of your 4x6870 rigs over me? What kind of setup are you running.

I think he was joking.  4x 6870s @ 2.3 GH/s is nearly 600 MH/s per card.

Edit: Woops, nvm. I misread MH/w as GH/s.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: abbeytim on April 22, 2012, 02:21:35 PM
he never said that he said hes getting 2mh/watt so lets say a 6850 consumes 150 watts and gets 300mh/s

and 4 x 300 mh/s =1200 mhs or 1.2 gh/s just like in the description

so quit putting words in his mouth


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Mousepotato on April 22, 2012, 04:20:09 PM
Rigs with 4x 6870s set up properly get 2.3 MH/w and are easy to keep cool.  I haven't touched my Win7 rigs for over 6 months.

he never said that he said hes getting 2mh/watt so lets say a 6850 consumes 150 watts and gets 300mh/s

and 4 x 300 mh/s =1200 mhs or 1.2 gh/s just like in the description

so quit putting words in his mouth

Ok now I'm confused.  ???


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 22, 2012, 04:40:57 PM
I have a Kill-a-Watt on 2 of the rigs.

Rig 1: 1.197GHs - 1,371,626 shares since GUIMiner Update
Rig 2: This doubles as my gaming machine and not for sale
Rig 3: 1.214GHs - 575,707 shares since last reboot
Rig 4: 1.196GHs - 1,369,556 shares since GUIMiner Update
Rig 5: 1.242GHs - 1,424,775 shares since GUIMiner Update (This rig has 3x 6870 and 1x 5850 - 6870s are running 299.4 Mhash and the 5850 is running at 344.4 Mhash) 803 watts at the plug
Rig 6: 1.203Hs - 1,378,239 shares since GUIMiner Update 721 watts at the plug

I am clearly not getting the 2.3Mh/w that quattro claims is possible, but I am within the examples on the wiki.  I know I could tweak it a lot more to save a few watts here or there, but I am motivated by stability. I found something stable and stuck with it.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: quattro on April 23, 2012, 07:46:02 AM
I'm at 525w @ the wall for all of my 4x6870 rigs, and that's with the 100% cpu bug.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: abracadabra on April 23, 2012, 02:33:39 PM
$600 per rig plus shipping. That's what it costs me to build a 1.2GH rig.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Mousepotato on April 23, 2012, 03:50:09 PM
I'm at 525w @ the wall for all of my 4x6870 rigs, and that's with the 100% cpu bug.

Don't let anybody know what CPU, voltage/OC settings, or MH/s you're at or anything.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 23, 2012, 05:34:20 PM
$600 per rig plus shipping. That's what it costs me to build a 1.2GH rig.

You can't buy 1.2GH/s worth of cards for $600


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Mousepotato on April 23, 2012, 06:11:27 PM
$600 per rig plus shipping. That's what it costs me to build a 1.2GH rig.

You can't buy 1.2GH/s worth of cards for $600

Maybe not new (well, not since BensOutlet.com's $140 for brand new 5870s), but anything goes on the used market.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 23, 2012, 06:30:25 PM
$600 per rig plus shipping. That's what it costs me to build a 1.2GH rig.
You can't buy 1.2GH/s worth of cards for $600
Maybe not new (well, not since BensOutlet.com's $140 for brand new 5870s), but anything goes on the used market.
You may be able to find the cards for $600 used, but nothing else. Regardless, I am not interested in letting them go for $600. That is half of what I paid for them and they have a lot of life left in them.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Miner612 on April 23, 2012, 10:12:26 PM
$600 per rig plus shipping. That's what it costs me to build a 1.2GH rig.

You can't buy 1.2GH/s worth of cards for $600

Easily can be done.  Shop harder.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: xurious on April 24, 2012, 02:31:58 AM
$600 per rig plus shipping. That's what it costs me to build a 1.2GH rig.

You can't buy 1.2GH/s worth of cards for $600

Easily can be done.  Shop harder.

I felt compulsed to throw in my .2c here and say 1.2gh/s for $440 is easy enough. 5830's are $100 each plus shipping all over the place.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Imsimon on April 24, 2012, 04:57:37 PM
650 each plush shipping, I will buy 5, to mid PA


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: Miner612 on April 24, 2012, 10:53:23 PM
1200 for all of them.

I will throw in a few ounces of silver too.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: xurious on April 24, 2012, 11:32:19 PM
650 each plush shipping, I will buy 5, to mid PA

I'd be interested in one, perhaps two, setups minus gpu's if you go this route.


Title: Re: [WTS] 5 Mining Rigs @ 4x 6870 cards @ 1.2GHs
Post by: mike85123 on April 26, 2012, 05:12:37 PM
$800 each shipped ground to the US. Any takers? Maybe I will part them out if I can't get any takers on complete rigs.