What brand of motherboard and vid cards are you using? Asrock motherboards are KNOWN to cause fire when used with multiple vid cards for mining. Lesser brand vid cards have poor heat ventilation designs.
You mentioned problem with your silverstone psu: replace the psu with a quality one (corsair) ASAP. Additionally, if your motherboard is ASROCK, replace it with a quality one (Asus, Gigabyte, MSI, etc...) ASAP.
Your problem is HARDWARE, NOT SOFTWARE: no amount of fiddling in software will fix it. FIX your hardware and then tweak your software.
Mobo : MSI Z87-GD65 ... i think its a good one .. doubt whether the problem is due to that. About silverstone PSU : isnt that a well known brand ? Anyways have to take it for repair/replacement because of 2 burnt ports (but that I think was more due to the connection being loose). But i am thinking of running it for now as long as I can . |
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Also one thing I have noticed is that the VDDC on GPU-z fluctuates + 0.006 V and very rarely by + 0.012 V with avg voltage being around :
1.087 V for 7950
1.019 V for 280x no 1
1.050 for 280x no 2 (gives more hashes see in pic)
not sure if his is relevant.
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Fires are caused by dust balls building up in the PSU, CPU and GPU heatsink and fans. Buy a can of compressed air and clean them out once a month. Put a smoke alarm near your equipment and never place equipment where fire can spread, near curtains etc.
I am not sure if it was because of the dustballs near the GPU (because I saw the flame from the GPU section only), reason being : it happened twice in 2 days, so I am not sure it was because of the dustballs. Although your theory seems very plausible and it may very well be because of the dust balls, reason being: the fire has not recurred since I have not overclocked and the rig is running at close to 77 C, i e , 3-5 C less than it was when overclocked. Maybe that might be the critical temperature for dustballs to ignite, who knows lol. Anyways taking the advice of cleaning with compressed air seems good eitherways and wont hurt, it has been on my mind for the past 5-10 days, but now you saying it has pushed me to go ahead and do it, so thanks buddy for shaking off my laziness  |
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Did you find the source of the fire? I recently had one on my 7950 XFX DoubleD catch fire on startup (power on) and can't really figure out what happened, my temps were 80-81c which doesn't seem too bad.
Hi, No I could not find the source of the fire. Can't seem to figure out how to go about doing it  . Although I am not overclocking now and once every 8-12 hours or so I am shutting it doewn fro about 15 mins or so and draining out power by taking out the plug. It seems to be working fine now but I am getting about 15% less hashrate . But ill take that anyday compared to not running one of my cards. |
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Are you running the newest ATI drivers? It should say R9 200 series in GPUZ, then maybe VRM temps will show up on the bottom row.
You can also use HWinfo
Yes the drivers are the latest Catalyst drivers that came with the cards. The GPU-z is for the 7950 .. below it on the bottom there are two dropdowns for 280x's .. and all three don't show any VRM field. |
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Cant find VRM on MSI after burner either .... here is the image below while mining. Its been about 24 hours and the rig had a break of 1 hour in between and has been running fine without any overclocking.
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Find out the temps on your VRMs.
How do I do that ? I have asked the same above. Kindly help. GPU-z is not showing any info on vrm |
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Up to 90ºC on the core and unknown at the VRMs? No risers, no undervolt, no space between cards, accumulating dust?
Understand: you must do _something_ to fix that problem. Not saying that it's ok now, and hope. You're degrading those cards fairly quickly.
Being "maxed out" or not is barely relevant. That "maxed out" is for casual use of the devices as intended (e.g. a few hours a day with 3d gaming loads), not 24/7 mining with the conditions above.
How do I calculate/finout the VRMs ? I believe 750 for 280x is normal without needing to be undevolted . is it not ? for 7950 yes I did overclock it to get 650 but that too would be taken care of by the psu which has enough power isnt it ? The cards have some space between them and with the fan running constantly they are about 80 C for the past few days . now without overclocking it is at about 77-78 currently. The dust part was normal house dust that had accumulated (living tropically). About these cards 24/7 .. people do it for months together without any problems isn't it ? So mine is just a month old . And how is one cards overclocking affecting others ? I fail to understand |
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One weird thing I noticed was when overclocking my 7950 , it used to affect both the 280xs ... dont know if that counts or is normal .. but I have failed to find an explanation for that ... seems weird to me how overcloking one can afect hashrate of other cards.
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Oh, I see. Sorry about that...
Ok, skip the bios flashing but it's just that you're pushing the cards to the limits.
Do you have good ventilation? Do you have PCI-e risers so that the cards are spaced? Are the fans running at 70%?
Use at least a large fan (those household ones) blowing at the back of the cards
Yes I have a large fan running on them .. so far its been running smoothly, I think the problem arises either when I overclock the 7950 or if its been running for like say more than 12 hours. I do not have riser cables. I have had the cards running with the same space between them for about a month now. And these are lower temperatures of 78-80 . There have been days when the cards have touched 90 C due to accumulation of dust. So as of now I don't think they are being maxed out. Also without overclocking 7950 I am getting lesser hashrates right now compared to when overclocking (see above for hashrates). Also the fans are running at a fairly high % : 7950 - 67% fan 280x - 70% 280x other - 80% So I thinnk the fan is doing its job. Do you think getting riser cables might solve the job ? Also I am worried about the burnt carbon smell from one of the 280x I mentioned earlier. How do I diagnose if its ok or not (because apparently its been mining fine now)? |
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Won't that void my warranty ? Because if something happens I want to be able to claim the card back atleat .. they are only about a month or two old. Also I have never flashed BIOS before :-(, if something goes wrong I would not know much to undo it. |
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So, you insist on running 3 non-undervolted cards side by side without knowing the temperature of the voltage regulators??? I asked you to STOP and follow my advice. The intent of that rushed post was clear. Yet you ignored it... Good luck, I guess
It happened before too and then worked fine for another day. So I thought it would be ok to run it without overclocking. I value your advice but its just that I have made too much of an investment in these cards and I want to run them to get the return as much as possible. I want to know a way to get to the root of the problem. How do you suggest I find out the VRM , GPUz does not show it ? And does not cgminer show the temperature correct ? Please correct me if I am wrong on anything. Dont mean no disrecpect bro. Also when you say run 3 non-undervolted cards side by side - are you implying something to do with PSU ? because its a 1250 Watt PSU. Or is there some other rationale ? |
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What brand of power supply are you using?
Silverstone |
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Is there any way to know a GPU is faulty/burnt besides smelling it ?
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Oh ok got the VBE7 - program used to undervolt... I have sapphire trix on my system .. will that do ? and how much should I set VDDC to for undevolting 7950 and 280x ?
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Then use one card at a time.
First of all, lower your target temperature from 80ºC to 70ºC on miner config
Load GPU-z and select the "Sensors" tab. Scroll down to see the VRM temperature. Then, load you miner software with intensity = 8 and start mining. Raise intensity bit by bit and check those temperatures!
Are you undervolting the cards? If not, do so with VBE7
Actually I have all 3 cards running now. I was earlier overclocking the 7950 and that seemed to make an impact on the other 280xs hashrate as well. Weird. I have not undervolted any of the cards. Now the cards are running at about 80% +- 5 fanspeed. And this time I have not overclocked the 7950. I have GPU-z loaded now and had it earlier too. For one of the 280x it shows VDCC from 1.056 V to 1.044 V. About the VRM I can not find that in GPU-z under sensors. All I see is voltages and fan speed, etc Hashrates now are : 280x - 710 khps earlier was 750 khps (when 7950 was overclocked to E - 1020 M - 1420) 280x - 690 khps earlier was 750 khps (when 7950 was overclocked to E - 1020 M - 1420) 7950 - 560 khps earlier was 650 khps (when 7950 was overclocked to E - 1020 M - 1420) So they are not running at full speed. About the temperature : They have always run @75 + ... right now at about 78-79 ish and I always have a fan blowing air on them. Since my cards are not undervolted .. what do you mean by VBE7 ? |
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STOP! Shutdown the PC NOW
I did stop it then and removed the cards. Checked which one was smelling of carbon and plugged it back the other 2 which werent. They seem to be mining fine for now. What do you think is the problem ? Any idea ? |
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So this happened just now, I saw a flame near the graphics card for about a second or two (running 2 x 280x and 1 7950) and the rig shutdown. I have a 1250 W PSU. I tried smelling the wired for burnt cables but could not find any smell. However the burnt smell was on one of the 280x cards and subsided soon thereafter. This had happened once earlier too, but I thought that I was seeing things and a flame I did not expect. Cards were running near about 80 C temperature. And it would run fine before but I had a burnt cable problem on the PSU and am using different port now for the graphocs card supply
What do I test how do I go about this ? Should I continue to mine expecting that if I stop and restart it every 12 hours or so I will "get away" with this or should I completely stop ? Kindly advice.
I am not too technical a person but can look up things online.
Need urgent help.
UPDATE : Tried with the remaining (280x and 7950) cards after removing card from which burnt smell came for a bit. And seems to be running fine for now. So I am assuming it wasn't anything with mobo or psu perhaps ? But still no idea what to do with the other card (from which burnt smell came) and how to test it ?
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Sorry guys leaving this community/project because of the behaviour of the lead developer on the cryptocointalk forums. He seems to be in a habit of stifling free speech when members of the community face problems and post them. He inexplicably kept deleting my posts when asking other members for help, others like thbj0011 too have faced the same problem in the past I am told. Anyways don't want to go into much detail or it would fill up this thread and create a nuisance for you guys (which is certainly something I would not want).
If you guys wish to know more about the reason I am leaving you can pm me or even ask members like traderman,GRDMINER,etc from those forums. Been trying to resolve this problem since the past few days to no avail as all my posts and attempts to resolve the problem were constantly deleted by Rob H on cryptocointalk forums.I suppose this one would meet the same fate too.
Again a BIG THANK YOU TO WHO WERE SUPPORTIVE here whenever I faced problems. Thanks for all the help provided.
PS: Andrew sorry bro will not be able to help you here with your problems about the card ,, but feel free to pm me will try to help you as much as I can :-). Otherwise I am sure there are members like traderman, GRDMINER ,who have been very helpful, will most certainly help you .
Sucks to be leaving after having invested in the card. But sometimes self respect and standing up for the right thing is more important.
Good luck to all of you, wish you guys the best.
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Hi! Thanks for the quick reply. The CPU Mining payouts have not yet been enabled so I have no clue..but from what Rob written above, the max payout per cpu miner per day is 150GRC if the miner has enough BOINC credits. HW errors that's the HW in CG miner right? I'm basically only getting those..they also show up as "invalid" in the internal CG Miner Statistics. Does that mean that the mining setup I used for the GPUs is wrong? Also I have more GPUs in the rig however only one can be seen and set/overclocked in the AMD Catalyst, the CG Miner sees both of them but if I try mining with the second one it is very slow and shuts down almost immediately. What am I doing wrong or didn't do? Regards, Andrew. Hi again, Np at all, sorry could not reply sooner because of Rob H.'s mysteriously inexplicable behaviour on the cryptocointalk thread. Anyways thats another story. Coming to your problems. Yes HW errors are the HW in thecgminer towards the upper somewhat right. It should show a number close to 0 (I prefer 0 as the goal when mining). Is that 0 ? If it isn't then something is wrong with your set up. About showing up as "invalid". I am not sure what you mean. Could you post a screenshot perhaps ? AFAIK there is no stat of it being "invalid" .. maybe you mean "stale" perhaps ? Long story short if you are getting errors then try decreasing the intensity at which you are running cgminer. Also check thread concurrency. Depending on your card it varies. Google it up for your card or let me know the model of your card so I can help you out. It doesnt take much time. All the best and feel free to ask if your still stuck (/even otherwise :-)). |
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