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This is what happened to my 3 weeks old gigabyte today, had to put out a fire  It poped while i turned on the PC, not while mining   |
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That is probably due to overheating since you have your cards in a case. Look at that VRM value after a couple of hours of running cgminer. Try with an open case for testing purposes or smth.
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Whether also I need to have the conf file or its just enough to create a .bat file with these settings and use it.
As I dont have that with me.
Also I am doing solo mining for paycoin now. So will it work for scrypt solo mining
You dont need config file. Just create a .bat file and enter that. It works for scrypt mining since you have the --scrypt tag in the line i gave you. |
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That's probably because you used a wrong thread concurrency number. Make a .bat file and enter the following text to try it out setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt --shaders 1792 --gpu-engine 1100 --gpu-memclock 1500 --temp-target 75 -I 13 -w 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --auto-fan -o stratum+tcp://stratum.wemineltc.com:3333 -u username -p password For pool, use whatever pool you are mining at. |
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Maybe the VRM is overheating i had the same problem with my card or you are getting HW errors due to higher intensity. I suggest you try cgminer instead of reaper and with settings -g2 -thread-concurreny 8192 -I 13
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I cant get my gigabyte over 580khash while my sapphire 7970 runs at 740khash with no crazy overclocking. Here the difference is 160khash. I've done some research and the new, latest model of gigabytes suck, that's why i was asking wich brand to get. 7950(540khash), 1080/1500, 1.090v, -g2 - i13 -tc 8192  7970(740khash). 1080/1500, 1.131v, -g2 -13 -tc 8192  |
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Im running my gigabyte on 1080/1500 for 580khash, -g2 I -13 cus anything above that intensity is generating HW errors :\
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I heared that those have crappy stock bios and you have to replace it with regular one from sapphire boost is that true? How much khash are you geting from 1 card?
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Im also on the market for new 7950's if you dont mind me highjacking this thread. What would be the best brand? I know that reference cards are best, but where i order t hey dont have them. I have ordered a gigabyte WF3 rev 2.0, 8+6pin wich is supposed to be the newest and i am very dissapointed. I can only get about 580khash on it, and i've seen people that can put the old F43 bios on it get 660khash+ with the older version of this card 6+6pin connectors. The latest card wich has FT0 bios on it (my rotten egg of a card) does not allow/does not work with the older F43 bios anymore.
So since gigabyte is out of the question for me...wich one should i get? I was looking at sapphire, power color or XFX wich are the cheapest. 190-210EUR. I have a sapphire 7970 wich i am very happy with, it runs 760khash over night so im leaning towards Sapphire 7950 boost. Any advice/suggestion/experience would be appreciated.
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can't wait to get hands on my 15 aswell!
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Waiting eagerly for an update aswell. Would like to buy some (15)  |
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Will try to get some cheap risers then i guess. One last question should i get 5 then for every GPU to have this additional power or just the ones i really need (pci-e 1x slots).
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Would it be ok if i replace 2*7870 with 2x7850? That would reduce power consupmtion for about 80W or so if my calculations are correct. Thanks for help , i really appreciate it  mm. See, GPUs are using not only the power supplied by PCI-E power cables( http://www.hardcore-[Suspicious link removed]/images/psu/pcie6.jpeg) but also the power from PCI-e slot itself - http://en.wikipedia.org/wiki/PCI_Express#Pinout, see there are +12V power lines? So what happened to your rig - motherboard takes +12V from PSU using the ATX power plug(the one which burned) motherboard then does something with that power(or not) using voltage regulator on the motherboard and gives it to GPUs on the PCI-e slot. And your GPUs took too much power from PCI-e slots - so the weakest link burnt, usually the weakest link is the ATX power connector itself. Now to anwser your question(replace 7870 with 7850) we need to know exactly how much power 7850/7870 are using from PCIe slot itself and for how much max power your ATX connector is rated and assuming that not only the connector burnt but also motherboard voltage regulator also - how much max power it can give. That's a lot of questions ; )) That's why ppl usually use powered risers - consuming +12V directly from PSU and not using it from motherboard. God damn that sounds complicated. By finger test you mean touch the power connector and feel it if it's running too hot ? Sounds dangerous |
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Would it be ok if i replace 2*7870 with 2x7850? That would reduce power consupmtion for about 80W or so if my calculations are correct. Thanks for help , i really appreciate it |
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clean it and plug again, it's probably alive ; )
clean what the PSU? should i do anything about that burned cable or is it a fire hazard now? |
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Hi
you have to solder wires from 12v line from PSU to the pins in the normal riser (12v pins)
That's above my experties, i neither have the tools or the knowledge to do that
I only used power risers for 2 cards tho, since the board already got 3 slots that will fit the GPU. So can this still be the case ?
How can i make my own powered risers? I saw some on ebay but they cost 5 times as much as the normal ones.
Good question, and not something I know enough about. However... Your PSU was 1050w. You were pulling nearly 1000w from the wall. My understanding is that PSU's "deteriorate" over time (based on power calculators), something about capacitor age or something. Someone who knows more may be able to chime in but I think this could be related? Ex. the power being pushed by the PSU decreased over time until it could no longer handle the load and then was overloaded. I have heared about the deteriorating PSU's over time aswell, however my PSU was only 2 months old - same with the motherboard so i'm not sure if that applys to my case aswell. I have had experience with broken down PSU's in the past but never like this. It usually is generating extreme heat and you can smell the plastic burning and then it explodes and doesnt work anymore. Mine still works however so i dont know |
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I only used power risers for 2 cards tho, since the board already got 3 slots that will fit the GPU. So can this still be the case ?
How can i make my own powered risers? I saw some on ebay but they cost 5 times as much as the normal ones.
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Hi, i've been arount these forums lurking for a while just never registered/posted anything. This is what happened to me and was wondering if anyone had a similar experience or know which would cause this - bad mobo or bad PSU. Motherboard is Asrock 970 Extreme 4 and the psu is Corsair HX 1050W. It was running 5*7870 and power consumption measured at the socket was 960-980W and 4-5A current. It was running fine for about 2 months untill yesterday I only noticed because my miners went offline, but the fans on GPU's kept running and the PSU still turns on.   |
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