Author

Topic: 5th card droping kh/s , whats wrong? (Read 546 times)

newbie
Activity: 56
Merit: 0
January 20, 2014, 02:42:31 PM
#8
and why do i need powered risers?  Huh
Like as allways im using non powered risers. That my forth rig and i have no problems since now Smiley
full member
Activity: 350
Merit: 100
January 20, 2014, 02:23:29 PM
#7
first pci-e is 1x or do you mean first pci-e 16x?

it will take me 2 month to get powered risers and i dont have one

1800wt for 5 cards? its a joke, right? 1250 for 4 x 280x toxics is working fine for me
If you don't have powered risers, how are you using 5x 280x?
newbie
Activity: 56
Merit: 0
January 20, 2014, 07:04:02 AM
#6
first pci-e is 1x or do you mean first pci-e 16x?

it will take me 2 month to get powered risers and i dont have one

1800wt for 5 cards? its a joke, right? 1250 for 4 x 280x toxics is working fine for me
full member
Activity: 350
Merit: 100
January 20, 2014, 06:24:41 AM
#5
750wt PSU (2 cards) and 1000wt psu (3 cards)
How to understand which slot is that GPU0 ?

I have one more 1200wt psu nearby i can test it out but i dont know which card power to replace
GPU0 should be your first card in the first PCI slot. Try plugging 2 cards into 1000PSU and the 3 card into the 1200PSU and see if it fixes it. And, IF you can, try plugging all the powered risers and motherboard with the 750PSU or the 1000PSU.
newbie
Activity: 56
Merit: 0
January 20, 2014, 06:07:22 AM
#4
750wt PSU (2 cards) and 1000wt psu (3 cards)
How to understand which slot is that GPU0 ?

I have one more 1200wt psu nearby i can test it out but i dont know which card power to replace
full member
Activity: 350
Merit: 100
January 19, 2014, 10:38:45 PM
#3
I think it might be the power issue. 5x 280x recommended watt is 1800... Also, you're OCing all of them, which requires MORE power.. Suggest you replace the 700 for a 1k.
newbie
Activity: 14
Merit: 0
January 19, 2014, 08:39:59 PM
#2
I have the same issue 3 cards mine at 740kh/s while one does 620kh/s and all are the same cards
newbie
Activity: 56
Merit: 0
January 19, 2014, 08:20:04 PM
#1
I have 5 cards on mobo, 280x. Using 2xPsu, 1kwt and 700wt.
USing BAMT 1.2
OC' on gpu to 1100
Card GPU0 droping kh/s after 15-30min of minig.
Slowly loosing speed from 770 to 550 and lower.
Other cards are ok.
Tempr is 55c
What can i do?
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