SCRYPT MINING RIG SHUTS DOWN AFTER RUNNING 3RD GPU (LOW USAGE I-13)

maardein

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Quote from: iarsenaux on December 19, 2013, 10:47:33 AM

Woohooo!!!! Everything is working fine now. I changed my PSU from strike-x 1100w 80 plus gold to antec 1200w 80 plus gold and it's working now. i also removed the casing and use a bigger fan to regulate temperature. temp ranges between 70 - 75. using gpu clock 1050 on 3x HD7950 gives me hash rate range of 1700khash/s to 2100khash/s. Thanks for all the help!

Great! Have fun mining

TribalBob

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DGbet.fun - Crypto Sportsbook

Powercolor 7950 Minimum System Requirements: 500w PSU (850 w/ crossfire set-up)
Sapphire 7950 Minimum System requirements: 500w PSU (850 w/ cross-fire set-up)

powercolor x2 = 1000w (850 w/ crossfire)
sapphire x1 = 500w
Athlon II x1 = 45 - 80w depending on model

Total = 1395 - 1580+w
Your PSU = 1100w

**Edit: I should read the thread before answering**

-_-

iarsenaux

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Quote from: iarsenaux on December 17, 2013, 09:28:13 PM

Quote from: BrewCrewFan on December 17, 2013, 08:07:50 PM

Quote from: Number6 on December 17, 2013, 08:02:13 PM

Quote from: BrewCrewFan on December 16, 2013, 11:41:00 PM

Quote from: iarsenaux on December 16, 2013, 02:30:25 AM

I need help on my mining rig. Im using 2x powercolor hd7950, 1x sapphire hd7950. Athlon 2 for processor, 4gb RAM, strike-x 1100w 80 plus gold PSU. GIGABYTE 990FXA-UD3 for mobo , 500gb HDD. im using GUIminer scrypt alpha v0.03. No problem on running 2 GPU at low usage i13 but when i start to run the 3rd GPU i13 low usage, pc shuts down. I tried running 2 GPUs at high usage i20, pc shuts down after running 2nd miner. No overclocking yet. Using AMD APP SDK 2.9.

AMPS!
Dude you can have how ever many watts coming in you want, but if your +12 aint stable, and for those cards, very strong, your gonna fry your PSU, and take only who knows what with it.

If you really want me to I can look up a damn good PSU for you, plenty of amps and rock solid in every aspect, but your going to pay for the PSU, your paying for the quality, then again seeing what is at risk at frying.... its a small price to pay than your whole system.

I am a bit late to the thread, but I will second everything BrewCrewFan lays out. You need a strong 12V bus in the PSU if you are going with 3 cards. Many of the lower priced PSUs will do all kinds of things to get a high wattage listed, but when it comes to mining you are putting them to the test and going to be using a lot of power 24x7 which will push weaker PSUs to the breaking point. Just be glad your system shut down and you didn't get away with running all three until the PSU shorted out, potentially taking your MB and three cards with it.

Seasonic is a good choice for 1000Watt+, I own a few of the 1250x units myself and have had good luck with them. I also have had good luck with Corsair in the 850 Watt range, but these will only push two cards.

Yeah hes looking at wanting at least 100 amps on that +12v just to be safe. When they state the need its usually high at first because it has to factor in all the system stuff too. If there is little demand on everything else the majority of the +12v can be for the video cards.

To the op, if you dont have the PSU to push the cards, I would highly sugest to back off and take at least one of them out until you got the funds for the new PSU. Im not saying it to be mean or anything, but I am really concerned about your hardware. I have blown up my fair share of hardware, and it can be nasty. Sometimes you do get lucky and its only the PSU that goes, but I have had the the mobo, gpu and ram all pop on me before...it was an expensive lesson.

Ok thanks. I will try all the options given to me. I'll go back to the store and try a different psu.

Woohooo!!!! Everything is working fine now. I changed my PSU from strike-x 1100w 80 plus gold to antec 1200w 80 plus gold and it's working now. i also removed the casing and use a bigger fan to regulate temperature. temp ranges between 70 - 75. using gpu clock 1050 on 3x HD7950 gives me hash rate range of 1700khash/s to 2100khash/s. Thanks for all the help!

iarsenaux

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Activity: 350

Merit: 250

Quote from: BrewCrewFan on December 17, 2013, 08:07:50 PM

Quote from: Number6 on December 17, 2013, 08:02:13 PM

Quote from: BrewCrewFan on December 16, 2013, 11:41:00 PM

Quote from: iarsenaux on December 16, 2013, 02:30:25 AM

I need help on my mining rig. Im using 2x powercolor hd7950, 1x sapphire hd7950. Athlon 2 for processor, 4gb RAM, strike-x 1100w 80 plus gold PSU. GIGABYTE 990FXA-UD3 for mobo , 500gb HDD. im using GUIminer scrypt alpha v0.03. No problem on running 2 GPU at low usage i13 but when i start to run the 3rd GPU i13 low usage, pc shuts down. I tried running 2 GPUs at high usage i20, pc shuts down after running 2nd miner. No overclocking yet. Using AMD APP SDK 2.9.

AMPS!
Dude you can have how ever many watts coming in you want, but if your +12 aint stable, and for those cards, very strong, your gonna fry your PSU, and take only who knows what with it.

If you really want me to I can look up a damn good PSU for you, plenty of amps and rock solid in every aspect, but your going to pay for the PSU, your paying for the quality, then again seeing what is at risk at frying.... its a small price to pay than your whole system.

I am a bit late to the thread, but I will second everything BrewCrewFan lays out. You need a strong 12V bus in the PSU if you are going with 3 cards. Many of the lower priced PSUs will do all kinds of things to get a high wattage listed, but when it comes to mining you are putting them to the test and going to be using a lot of power 24x7 which will push weaker PSUs to the breaking point. Just be glad your system shut down and you didn't get away with running all three until the PSU shorted out, potentially taking your MB and three cards with it.

Seasonic is a good choice for 1000Watt+, I own a few of the 1250x units myself and have had good luck with them. I also have had good luck with Corsair in the 850 Watt range, but these will only push two cards.

Yeah hes looking at wanting at least 100 amps on that +12v just to be safe. When they state the need its usually high at first because it has to factor in all the system stuff too. If there is little demand on everything else the majority of the +12v can be for the video cards.

To the op, if you dont have the PSU to push the cards, I would highly sugest to back off and take at least one of them out until you got the funds for the new PSU. Im not saying it to be mean or anything, but I am really concerned about your hardware. I have blown up my fair share of hardware, and it can be nasty. Sometimes you do get lucky and its only the PSU that goes, but I have had the the mobo, gpu and ram all pop on me before...it was an expensive lesson.

Ok thanks. I will try all the options given to me. I'll go back to the store and try a different psu.

BrewCrewFan

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Quote from: Number6 on December 17, 2013, 08:02:13 PM

Quote from: BrewCrewFan on December 16, 2013, 11:41:00 PM

Quote from: iarsenaux on December 16, 2013, 02:30:25 AM

I need help on my mining rig. Im using 2x powercolor hd7950, 1x sapphire hd7950. Athlon 2 for processor, 4gb RAM, strike-x 1100w 80 plus gold PSU. GIGABYTE 990FXA-UD3 for mobo , 500gb HDD. im using GUIminer scrypt alpha v0.03. No problem on running 2 GPU at low usage i13 but when i start to run the 3rd GPU i13 low usage, pc shuts down. I tried running 2 GPUs at high usage i20, pc shuts down after running 2nd miner. No overclocking yet. Using AMD APP SDK 2.9.

AMPS!
Dude you can have how ever many watts coming in you want, but if your +12 aint stable, and for those cards, very strong, your gonna fry your PSU, and take only who knows what with it.

If you really want me to I can look up a damn good PSU for you, plenty of amps and rock solid in every aspect, but your going to pay for the PSU, your paying for the quality, then again seeing what is at risk at frying.... its a small price to pay than your whole system.

I am a bit late to the thread, but I will second everything BrewCrewFan lays out. You need a strong 12V bus in the PSU if you are going with 3 cards. Many of the lower priced PSUs will do all kinds of things to get a high wattage listed, but when it comes to mining you are putting them to the test and going to be using a lot of power 24x7 which will push weaker PSUs to the breaking point. Just be glad your system shut down and you didn't get away with running all three until the PSU shorted out, potentially taking your MB and three cards with it.

Seasonic is a good choice for 1000Watt+, I own a few of the 1250x units myself and have had good luck with them. I also have had good luck with Corsair in the 850 Watt range, but these will only push two cards.

Yeah hes looking at wanting at least 100 amps on that +12v just to be safe. When they state the need its usually high at first because it has to factor in all the system stuff too. If there is little demand on everything else the majority of the +12v can be for the video cards.

To the op, if you dont have the PSU to push the cards, I would highly sugest to back off and take at least one of them out until you got the funds for the new PSU. Im not saying it to be mean or anything, but I am really concerned about your hardware. I have blown up my fair share of hardware, and it can be nasty. Sometimes you do get lucky and its only the PSU that goes, but I have had the the mobo, gpu and ram all pop on me before...it was an expensive lesson.

Number6

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Activity: 490

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Quote from: BrewCrewFan on December 16, 2013, 11:41:00 PM

Quote from: iarsenaux on December 16, 2013, 02:30:25 AM

I need help on my mining rig. Im using 2x powercolor hd7950, 1x sapphire hd7950. Athlon 2 for processor, 4gb RAM, strike-x 1100w 80 plus gold PSU. GIGABYTE 990FXA-UD3 for mobo , 500gb HDD. im using GUIminer scrypt alpha v0.03. No problem on running 2 GPU at low usage i13 but when i start to run the 3rd GPU i13 low usage, pc shuts down. I tried running 2 GPUs at high usage i20, pc shuts down after running 2nd miner. No overclocking yet. Using AMD APP SDK 2.9.

AMPS!
Dude you can have how ever many watts coming in you want, but if your +12 aint stable, and for those cards, very strong, your gonna fry your PSU, and take only who knows what with it.

If you really want me to I can look up a damn good PSU for you, plenty of amps and rock solid in every aspect, but your going to pay for the PSU, your paying for the quality, then again seeing what is at risk at frying.... its a small price to pay than your whole system.

I am a bit late to the thread, but I will second everything BrewCrewFan lays out. You need a strong 12V bus in the PSU if you are going with 3 cards. Many of the lower priced PSUs will do all kinds of things to get a high wattage listed, but when it comes to mining you are putting them to the test and going to be using a lot of power 24x7 which will push weaker PSUs to the breaking point. Just be glad your system shut down and you didn't get away with running all three until the PSU shorted out, potentially taking your MB and three cards with it.

Seasonic is a good choice for 1000Watt+, I own a few of the 1250x units myself and have had good luck with them. I also have had good luck with Corsair in the 850 Watt range, but these will only push two cards.

iarsenaux

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I think there is. What should be the value for that?

Speedie

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Quote from: iarsenaux on December 17, 2013, 10:06:16 AM

Quote from: Speedie on December 17, 2013, 09:54:05 AM

Did you try what I suggested earlier i.e. running 2 cards at I13 for a few minutes and note the GPU temps, then I14 and note the GPU temps and so on? Even if the PSU isn't the best, power becoming an issue after several hours of mining doesn't make sense. It's generally binary i.e. there's enough power or there isn't.

If you have both cards directly attached to the motherboard then would I be right in thinking that you're running this in a conventional PC case? If so you almost certainly have heat problems which is reinforced by the fact that problems start after an hour or two at higher intensities.

Yes. I-13: 63 and 61. I-14: 65 and 66. I-15: 68 and 72. ... i-16: 71 and 76

Extrapolating that out at roughly a 3 degree rise for each increment in intensity, you would be arriving at the mid-80s by I20. That shouldn't be a problem, but it's likely raising your overall system temperature pretty high too (again, I'm assuming from your posts that it's in a regular PC case?). Is there a setting in your BIOS that tells the system to shut down if overall system temps reach a certain level?

iarsenaux

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Quote from: Speedie on December 17, 2013, 09:54:05 AM

Did you try what I suggested earlier i.e. running 2 cards at I13 for a few minutes and note the GPU temps, then I14 and note the GPU temps and so on? Even if the PSU isn't the best, power becoming an issue after several hours of mining doesn't make sense. It's generally binary i.e. there's enough power or there isn't.

If you have both cards directly attached to the motherboard then would I be right in thinking that you're running this in a conventional PC case? If so you almost certainly have heat problems which is reinforced by the fact that problems start after an hour or two at higher intensities.

Yes. I-13: 63 and 61. I-14: 65 and 66. I-15: 68 and 72. ... i-16: 71 and 76

iarsenaux

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I will try to borrow my friend's psu. I think he has a thermaltake 1250w. I hope it will fix the issue. Is it also possible because 2 of GPU's are so close to each other? Like there is only half an inch distance between them?

Speedie

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Did you try what I suggested earlier i.e. running 2 cards at I13 for a few minutes and note the GPU temps, then I14 and note the GPU temps and so on? Even if the PSU isn't the best, power becoming an issue after several hours of mining doesn't make sense. It's generally binary i.e. there's enough power or there isn't.

If you have both cards directly attached to the motherboard then would I be right in thinking that you're running this in a conventional PC case? If so you almost certainly have heat problems which is reinforced by the fact that problems start after an hour or two at higher intensities.

maardein

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I am sorry to say so, but the Aerocool PSU's don't really have a good reputation, even though the specs are quite good (90A on single 12V). So I also think it is a PSU problem. Do you have the possibility to try another PSU? Maybe borrow it from someone? That could be a good way to start troubleshooting.

To monitor the voltage to your cards, GPUZ is a very nice tool. It also monitors the voltage to your card, so you can see whether this is stable.

Also, try playing with the vddc value in cgminer, this is the voltage going to the GPU, and significantly impacts your power usage. For example, my dual 5870 rig went down from ~500W at the wall to ~400W, by just lowering this voltage a little.

BrainShutdown

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Quote from: iarsenaux on December 17, 2013, 09:30:13 AM

Quote from: BrainShutdown on December 17, 2013, 09:27:12 AM

Are you using powered risers?

Check your PSU connection to the motherboard, does it heat a lot?

I think yes. Actually i'm a nursing grad who really don't know what i am doing but i am so much interested on cryptocurrencies. I don't think i used powered risers. I connected my GPU's directly to the board.

If it's heating you definitelly need powered risers for two of them at least...

iarsenaux

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Quote from: BrainShutdown on December 17, 2013, 09:27:12 AM

Are you using powered risers?

Check your PSU connection to the motherboard, does it heat a lot?

I think yes. Actually i'm a nursing grad who really don't know what i am doing but i am so much interested on cryptocurrencies. I don't think i used powered risers. I connected my GPU's directly to the board.

BrainShutdown

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Are you using powered risers?

Check your PSU connection to the motherboard, does it heat a lot?

Have you run this commands from an administrator command line?

setx GPU_MAX_ALLOC_PERCENT 100

setx GPU_USE_SYNC_OBJECTS 1

iarsenaux

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I tried to run 2 cards again at intensity 20 and it shutsdown after 1 to 2hrs. Tried to run 2 card 1 intensity 20 and 1 intensity 13 and was able to run for 7hours. I tried to increase both gpu clocks from 925 to 950 and it shutdown again after 1hr. I still cant maje the 3 cards work at the same time. Do i need to crossfire the cards? Another thing is that my pc has a poor management. I will upload picture.

phrozenspite

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Quote from: Kryptox on December 17, 2013, 12:08:48 AM

Quote from: phrozenspite on December 16, 2013, 11:30:18 PM

I've been saying this a lot but for using multiple GPUs for memory intensive calcs 4gb probably isn't enough ram.

Actually cgminer uses very little ram. The memory used for mining is on the video card. Check your task manager. I have a bunch of rigs with 3 video cards each and only 1gb of ram.

Sounds like the PSU.

Cgminer itself, but in order to run GPUs that have onboard ram it needs some locally allocated to address it. My setup is fine but that's what the problem usually is for these people. There's no way he's maxing out a PSU like that with what he's saying

BrewCrewFan

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Quote from: GoldSeal on December 16, 2013, 11:58:01 PM

It's definitely the PSU. I had the same problem recently trying to run 4 x 7970's on a 1600w psu. The psu has two rails and since I was using powered cable risers, the 12v lead for the pcie side was coming from the small power rail that supports the disks or other peripherals. The solution for this was to run a lead from the top rail that supports 8 pin pcie connectors only to the pci power for each card.

Essentually, I was over heating the lower peripheral rail and underutilizing the upper GPU rail. The symptoms would be that about 1 minute into mining while drawing 11 amps at 124v, the psu would suddenly shut off. Once the lead was moved from the lower rail to the upper rail, I was stable at 11amps - 124v.

Yea split +12 rails are usually not good when you got something that draws a ton of amps because you never really know where its going to draw the power. Ive seen the rails split into 3 or 4 rails on some of the PSUs To me I drop it like a hot potato if I ever see that. I would say 2 rails at most, and that would only be from a company that makes good pus like corsair or something along those lines. PSUs are the most neglected in most systems.

Kryptox

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Quote from: phrozenspite on December 16, 2013, 11:30:18 PM

I've been saying this a lot but for using multiple GPUs for memory intensive calcs 4gb probably isn't enough ram.

Actually cgminer uses very little ram. The memory used for mining is on the video card. Check your task manager. I have a bunch of rigs with 3 video cards each and only 1gb of ram.

Sounds like the PSU.

GoldSeal

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It's definitely the PSU. I had the same problem recently trying to run 4 x 7970's on a 1600w psu. The psu has two rails and since I was using powered cable risers, the 12v lead for the pcie side was coming from the small power rail that supports the disks or other peripherals. The solution for this was to run a lead from the top rail that supports 8 pin pcie connectors only to the pci power for each card.

Essentually, I was over heating the lower peripheral rail and underutilizing the upper GPU rail. The symptoms would be that about 1 minute into mining while drawing 11 amps at 124v, the psu would suddenly shut off. Once the lead was moved from the lower rail to the upper rail, I was stable at 11amps - 124v.

Topic: SCRYPT MINING RIG SHUTS DOWN AFTER RUNNING 3RD GPU (LOW USAGE I-13) (Read 4434 times)