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Swapping 4+4pin 12v rail caused computer to freeze?

post #1 of 18
Thread Starter 
Ive been trying to figure out what has been causing my computer to randomly freeze for a few days now and I am wondering if this is the reason.. I have a Corsair AX 850 psu and I was trying to plug in 2 AMd R9 280x cards.

Each card needs 2 8pin plugs and each of the set of 2 8pin plugs stem from 1 plug on the PSU. And by looking at how I had them routed both of the same plug were possibly not going into the PSU...

Could that of caused my problem or are those rails always feeding the exact same current and if I mix them up and had half of each rail supplying a gpu it wouldnt of mattered?

Pulling at straws yes..
post #2 of 18

4+4 is for the EPS12V...

 

(also, I apologize, but can you say "have" instead of "of"? :o)

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post #3 of 18
You'll have to use the cables that are either 8 pins in one connector, or the cables that have 6 pin connectors with the little extra 2 pin coming straight off of it.
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post #4 of 18
Thread Starter 
My apologies for having poor grammar..



I am using the two plugs on the bottom right. The cable that plug into the bottom right slots each split into 2 6+2pin cables for a total of four cables to power 2 gpus.. I know I am being a bit confusing but I cant see a simpler way of say it..

So there two for each gpu.. Lets say I crossed them and plugged one cable from each plug into each gpu.. could that cause hardware issues?
post #5 of 18
Quote:
Originally Posted by JMattes View Post

My apologies for having poor grammar..



I am using the two plugs on the bottom right. The cable that plug into the bottom right slots each split into 2 6+2pin cables for a total of four cables to power 2 gpus.. I know I am being a bit confusing but I cant see a simpler way of say it..

So there two for each gpu.. Lets say I crossed them and plugged one cable from each plug into each gpu.. could that cause hardware issues?

 

Oh whoa. Good question. I've never seen this one asked before! Phaedrus? What do you think?

 

Personally, I wouldn't do it. I would rather just do it cleanly. Why are you asking though?

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post #6 of 18
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

Oh whoa. Good question. I've never seen this one asked before! Phaedrus? What do you think?

Personally, I wouldn't do it. I would rather just do it cleanly. Why are you asking though?

I am asking because after I swapped out my cpu and mobo for a 4770k and 1150, I am having some freezing issues. I did a complete reformat with new driver install, but brought over my crypto mining files from my old set up and its locked up (frozen) a few times.. Its not right away, but its once every 24-48hours.. Tried new drivers.. Turned down the OC on the mining and still issues.. Prior to this it was rock solid for months..

I also had some Khash throttling after not touching it for awhile, like I would remote in after two hours and each card would be 100-200 khash less and the temps would be a lot cooler. Never did that before.. Someone in another thread said maybe psu problems.

So I've been trouble shooting lately.. Took one gpu out and testing the first pci-e slot with one gpu for the last 48hours and no problems. Just took that out and went to put the second gpu in the 3rd pci-e slot and noticed that it was possible that the wires got crossed as its all just sitting on my floor and not run cleanly.. So I made sure there right and plugged in the card to test for 48 hours before plugging them both back in..

I was thinking that if they were swapped and since they were both running at 100% load that maybe due to the current from each line being slightly different it was causing problems? Once again I am pulling a straws.. Trying to figure out what it could be before I just say its a mother board issue and try to return it hoping that solves my problem.. Next I would try to RMA the psu to see if that works and last I would start to RMA gpu cards..

So far I dont know what the problem is.. Could be nothing, but I do like having stability in my rig.. Especially if since its almost every 24hours..
Edited by JMattes - 4/24/14 at 7:30pm
post #7 of 18
Quote:
Originally Posted by JMattes View Post


I am asking because after I swapped out my cpu and mobo for a 4770k and 1150, I am having some freezing issues. I did a complete reformat with new driver install, but brought over my crypto mining files from my old set up and its locked up (frozen) a few times.. Its not right away, but its once every 24-48hours.. Tried new drivers.. Turned down the OC on the mining and still issues.. Prior to this it was rock solid for months..

I also had some Khash throttling after not touching it for awhile, like I would remote in after two hours and each card would be 100-200 khash less and the temps would be a lot cooler. Never did that before.. Someone in another thread said maybe psu problems.

So I've been trouble shooting lately.. Took one gpu out and testing the first pci-e slot with one gpu for the last 48hours and no problems. Just took that out and went to put the second gpu in the 3rd pci-e slot and noticed that it was possible that the wires got crossed as its all just sitting on my floor and not run cleanly.. So I made sure there right and plugged in the card to test for 48 hours before plugging them both back in..

So far I dont know what the problem is.. Could be nothing, but I do like having stability in my rig.. Especially if since its almost every 24hours..

 

Not to be stupid or anything, but it's not possible for it to be nothing.

 

Anyway, do you have them plugged in "cleanly" right now, so to speak, and it's still doing it?

It's a computer!
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It's a computer!
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post #8 of 18
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

Not to be stupid or anything, but it's not possible for it to be nothing.

Anyway, do you have them plugged in "cleanly" right now, so to speak, and it's still doing it?

I know that something is causing my problem.. Thats why I am banging my head against a wall trying to find what is the something that is wrong haha..

No right now I have the 2nd card in the 3rd PCI-e slot on the mobo.. I tested the other card and the 1st slot for 48hours and it was fine.. Figured I would try the other and the PCI-e slot I was using while it was crashing to rule out the possibility of a faulty PCI-e or falling GPU.. I just plugged that in so I figured I would give that 48 hours.

Then put both back in making sure they were ran correctly and just cross my fingers..
Sadly the problem isnt instant and was happening once every 24-48 hours so even 48hours isnt a long testing period, but if it is the board I have to return it sooner or later before I cant any longer..
Edited by JMattes - 4/24/14 at 7:36pm
post #9 of 18
Quote:
Originally Posted by JMattes View Post


I know that something is causing my problem.. Thats why I am banging my head against a wall trying to find what is the something that is wrong haha..

No right now I have the 2nd card in the 3rd PCI-e slot on the mobo.. I tested the other card and the 1st slot for 48hours and it was fine.. Figured I would try the other and the PCI-e slot I was using while it was crashing to rule out the possibility of a faulty PCI-e or falling GPU.. I just plugged that in so I figured I would give that 48 hours.

Then put both back in making sure they were ran correctly and just cross my fingers..
Sadly the problem isnt instant and was happening once every 24-48 hours so even 48hours isnt a long testing period, but if it is the board I have to return it sooner or later before I cant any longer..

 

What I'm recommending is simply this:

 

Plug the PCI-E cables into the video cards "cleanly", if you know what I mean. Then, see how it goes. Don't bother with any other kind of testing. I mean, what if you're right? What if it was caused by having half in one and half in the other? You can't keep it that way and then expect it to work. ;)

It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) Toshiba P300 3TB (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) Toshiba P300 3TB (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #10 of 18
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

What I'm recommending is simply this:

Plug the PCI-E cables into the video cards "cleanly", if you know what I mean. Then, see how it goes. Don't bother with any other kind of testing. I mean, what if you're right? What if it was caused by having half in one and half in the other? You can't keep it that way and then expect it to work. wink.gif

Sounds good I guess I will give it a go.. and if it locks up again.. What then?
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