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Topic: 6 GPU Sapphire Tri-X R9 290 OC (non-x) Rig - page 2. (Read 5969 times)

newbie
Activity: 19
Merit: 0
Are you using BAMT or SMOS or something else? Don't feel bad, Linux takes a bit to get used to if you're not already using it. No worries after a few headaches you'll get it working. If you're using SMOS go to the upgrades page and he has sgminer listed with some instructions, it was pretty easy to get going and I'm no linux expert.

Upgrades page:
http://www.smos-linux.org/upgrades/
full member
Activity: 126
Merit: 100
February 28, 2014, 01:08:48 PM
#27
Well I guess I have a lot more learning to do.  I plugged two cards into the MB and got them up to 700 kh/s with some settings I found.  Usually I have a pretty good knack for picking up new things quickly, but Linux was beating me last night.  I didn't have much time yesterday evening to mess around with it much, but it left me feeling like a moron.  I couldn't even figure out how to set the correct time in the task bar.  More importantly, I can't figure out how to get sgminer to run instead of cgminer.  At least the weekend is coming.  Hopefully I'll make more progress. 
full member
Activity: 126
Merit: 100
February 27, 2014, 01:09:57 PM
#26
I finally got enough parts in to start assembly on the mining rig last night.  I’ve got the motherboard and GPUs installed.  Next I need to get all the power hooked up.

I have one 1050W power supply coming today but the 1300W PSU from Amazon still hasn’t shipped.  I hope to be able to start it up tonight and see if I can get two or three GPUs online.

Here are some photos.
Full gallery here
http://imgur.com/a/7H9nG#0







hero member
Activity: 1223
Merit: 506
This is who we are.
February 22, 2014, 11:38:57 AM
#25
At peak usage I  have a draw from one outlet on the wall of 1250 watts into a power strip that has the box fan, monitors, router, and 3 cards 2msi +1trix.  I only have the one outlet reading but the other plug only has 3 cards and cpu/motherboard so I think it is less.  Stable hashrate for scrypt I have gotten in the 6 gpu setup is 880kh per card.  If I pull the trixs off and run them solo/dual in another box, I have have had them upto 910 but didn't run this long so I don't know if that was stable.   Last week or so I have been running asic resistant and the hash rate is different.  My configs are different on each setup since linux is OCd in the config and on windows 8.1 I use TRIXX.  The thread count sweet spot is the 24550 with 2 threads per gpu. This is what my sloppy ass setup looks like right now https://i.imgur.com/05dHsjg.jpg
full member
Activity: 126
Merit: 100
February 22, 2014, 09:08:22 AM
#24
I'm not arguing, but 2400W seems pretty high to me. Vleroybrown is running off of 2100W. Do either of you have actual kill-a-watt readings to share?
sr. member
Activity: 280
Merit: 250
February 22, 2014, 04:22:55 AM
#23
Don't go with what the graphics cards usually draw. You will be hashing, so peak loads is what you will be needing to look at. A list of peak loads can be found here: http://forum-en.msi.com/faq/article/power-requirements-for-graphics-cards

Multiple the A (Ampere) with the V (Volts) to get the W (watts).

In your case, the 290 hogs up 31 Amperes through the 12 Volt rails. So at peak load, it would consume 31 x 12 = 372 Watts each.

Also Don't forget to allocate some power for the motherboard, RAM and HDD... about 150 Watts should be fine.

Most decent PSU are 80% efficiency. That means you will draw up 1200W from the wall if you are using a 1000W PSU. You ca use that as a rough calculation to estimate your electricity costs.
full member
Activity: 126
Merit: 100
February 22, 2014, 02:31:53 AM
#22
Thanks for the positive feedback. Do you mind sharing your hash rates and settings?
hero member
Activity: 1223
Merit: 506
This is who we are.
February 21, 2014, 08:33:18 PM
#21
I run 6 290s on the H81.  Solid as a rock for about a month but it does get hot Smiley  I have 4 MSI cards and 2 of the ones you ordered.  The MSI cards perform better then the trixs.  As far as PSU I went with 2 1050s from corsair and they have room to spare.  In the way of OS I jump around depending on what Coin is most profitable.  Right now posting this from win 8.1 on a SSD.  I have let Bamt 1.3 and 1.5 run over a week straight no problems.  SMOS for some reason has never booted all the way on this machine.  I recommend pick the winner alt coin, let her rip and not fooling with it.
full member
Activity: 126
Merit: 100
February 21, 2014, 05:06:54 PM
#20
You may be right. I may have bitten off more than I can chew. Time will tell.

Besides, if it were easy, everybody would be doing it right? Wink
newbie
Activity: 19
Merit: 0
February 21, 2014, 04:02:14 PM
#19
I'd tend to agree with the ecoinomist about running fewer cards on one rig and more rigs. My five card (280x) are a pain in the ass as compared to my three card 7950 rig. The three card rig has run problem free for a long while now whereas the five card rig there is always some issue I'm looking into. I understand your point and a lot of people run six card rigs but with as cheap as mobos, ram and cpu's are, it's really not a big deal to run more rigs with fewer cards... I'm pretty sure it's more cost effective to but I haven't done a spreadsheet yet to prove it!

I'm actually using SMOS which as someone pointed out is set up for the R9 cards out of the box. Just have to make sure you edit the crontab to turn off the auto donating. Otherwise it's been really rock solid for me.

And as far as SSH'ing in from work I just set up port forwarding on my wireless router so I can hit the rig from the outside world.

Good luck, get a bottle of asprin cuz you'll need it for all the headaches you're about to endure!
full member
Activity: 126
Merit: 100
February 21, 2014, 08:05:01 AM
#18
Yes I'm new at this and I may eat my words later, but I really disagree.

Everything I've read about these tri-x cards show they run very cool. Totally different animal in comparison to reference coolers.

Secondly, I view the "rig" as an overhead expense. (Motherboard, CPU, and ram)
Think of it from a business perspective. The GPUs are called workers  Wink. If I want to run a business, I have to first by a building to put workers. Profitability per building for three workers is not as good as 6 workers in the same building. And the manager is key to any successful business.
member
Activity: 112
Merit: 10
Independent Analyst
February 21, 2014, 04:44:45 AM
#17
Seriously, 6 R9 290X in one board is overkill and expensive to build by the time you add in all the power supplies.
These 290's are extremely power hungry and heat up like crazy. Even if you manage to get it up and running stable (unlikely), it will be super heated and probably break down or have issues within months.

Just do some cost analysis for yourself, using a standard cheap Asus or AsRock mobo which sells under $69 and can ran 4 GPUs is a much better option in my experience. Saves you money, troubles, headache, time fiddling around and most importantly, has been proven by many to run stable over extended periods.

My 3 GPUs setups have been running smooth for over a year now. And I'm very certain that it's cheaper per Mhash than building 6 GPU rigs for the same cards, no matter what card you use, be it R9 280x, or 290 series.
full member
Activity: 126
Merit: 100
February 20, 2014, 10:11:40 PM
#16
Well I got nervous today and decided to go ahead and return the 850W PSU and buy a 1050W Seasonic. That should be plenty of overhead.

New plan:
1300W SuperNOVA will power motherboard, CPU, RAM, and three Tri-X 290 GPUs
3*300W+150W=1050W
1050W/1300W=81%

1050W Seasonic will power remaining three GPUs
3*300W=900W
900W/1050W=86%

I'll update the original post to reflect this.
full member
Activity: 126
Merit: 100
February 20, 2014, 05:28:50 PM
#15
Thanks.  If my cards will ever show up, I'll be able to start testing things out.  I prefer to keep PSU load under 90%.  If run steady above that point, I'll upgrade the 850W.

Which version of BAMT are you running that isn't compatible with R9 cards?  It was my understanding that the last 3 versions of litecoin BAMT were somewhat optimized for R9 cards.  V1.5 includes the latest version of Catalyst.

Also, how do you remote into BAMT from work?  That is one piece of the puzzle I haven't looked into yet that I want to incorporate.
newbie
Activity: 19
Merit: 0
February 20, 2014, 04:42:41 PM
#14
I've only used BAMT with from two to five cards. Never had an issue not recognizing cards. Only once but it was because the motherboard didn't support running cards in all five slots. What motherboard are you using? BAMT works great in my opinion, I've got the rigs down in a corner in my basement so it's nice not always having to go down there to administer them.. Plus I can log in from my iphone or work computer, etc.

I'm also pretty sure that BAMT doesn't come with drivers for the R9 cards, I installed those drivers before I tried using my 280x cards on it.

As for OP, go with two 1200w PSUs or a 1300 + 1000. The psu combination you have may work fine but if all things peak out at the same time you could run into issues. Better to have more and not need it than the other way around  Wink
newbie
Activity: 24
Merit: 0
February 20, 2014, 10:43:36 AM
#13
no.

i only tried bamt with monitor.
full member
Activity: 126
Merit: 100
February 20, 2014, 07:56:28 AM
#12
I don't have any Linux experience yet, but there is a wealth of information available here. I'll try it first and leave Win 8.1 as my backup plan.
Your problem seems odd since BAMT was made to run headless. Did you try running with with no monitors plugged in and ssh in?
newbie
Activity: 24
Merit: 0
February 20, 2014, 01:14:29 AM
#11
i tried bamt because of win 7 is supporting only 4 gpu's.

But BAMT dit only activate the card connected to the monitor. All the other cards did not work. And unfortunatly you cant use a dummy plug.

I cant solve this problem. Maybe you have more luck or experience with linux.

Please post your experience.

In the end i use win 8 and its fine.

I use afterburner for undervolting.
full member
Activity: 126
Merit: 100
February 19, 2014, 08:06:10 PM
#10
Thanks for the input. I may be running the PSUs pretty hard according to your data. What advantages are there from using afterburner? Under volting I assume? I'm leaning towards trying out litecoin BAMT first. I like the idea of ditching the hdd.
newbie
Activity: 24
Merit: 0
February 19, 2014, 04:44:23 PM
#9
hi,

6x r9 290 will take @stock voltage and non OC 2100W. (incl board, cpu and memory)

I use the asrock h61 pro btc without powered riser.

I have no problems. The Board is build for using x1 riser without molex.

Operating system is Win 8 (easy to setup and you can use afterburner)

cgminer and cgwatcher
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