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Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
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Topic: Finally got 7x 7970 and 7x 7950 cards running on one motherboard! (Read 12172 times)
karshek
Newbie
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Activity: 1
Merit: 0
Re: Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
January 31, 2014, 09:15:17 PM
#21
I'm trying to build the exact same set-up using the Mpower Z87 instead of the Z77.
Is there anything you know of that would prevent that board from doing the same as the Z77?
Right now I can get all 7 cards to detect in Bios. All 7 cards appear properly in Windows8, and cgminer -ndevs shows 7 cards.
However, after about 10 minutes of running cgminer with all 7 GPUS in windows 8, one of the cards goes sick (always GPU 1), and then the whole system freezes.
Any suggestions?
Bitweasil
Sr. Member
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Activity: 420
Merit: 250
Re: Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
February 01, 2014, 05:21:46 PM
#22
Your PCI extender cables are probably shit.
Need high quality, rack mountable GPU clusters for OpenCL work or password auditing?
http://www.stricture-group.com/
milbest20
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Re: Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
March 11, 2014, 04:39:55 AM
#23
Quote from: Prelude on August 31, 2013, 02:27:47 PM
Hey guys,
I know a lot of you have given up on running 7x 79xx series cards because it's a huge pain in the ass. Well, I've found the right hardware combo to make it happen!
https://i.imgur.com/sLOlB2H.png
All cards are normally pegged at 740KH/s, but they're a little slower on this pool for some reason.
Rig hardware:
Ivy Bridge i3 or Pentium
MSI Z77 MPower
7x Sapphire Dual-X 7970
Seasonic 1000w Platinum + Seasonic X760w
Software:
Windows 8 x64
Techpowerup's 13.1 drivers
I have another rig running 7x GB WF3 7950s with an MSI Big Bang Xpower X58. I also have an MSI Z77-GD65 running another 6x 7970s which I'm going to try a 7th card on when I get a chance, but I don't think that board is going to work with 7 cards.
TLDR: 7 cards is possible!
Prelude, for the MSI Z77 MPower, did you have to short any of the pins in the PCI-e slots to get all 7 GPUs to work/be recognized?
Poena
Newbie
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Merit: 0
Re: Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
March 11, 2014, 05:55:09 PM
#24
Quote from: milbest20 on March 11, 2014, 04:39:55 AM
Prelude, for the MSI Z77 MPower, did you have to short any of the pins in the PCI-e slots to get all 7 GPUs to work/be recognized?
I'm looking for the same answer...
I'm runing 3 X GTX 750ti directly from the PCIex16, but I have no luck so far with the PCIeX16 to X1 riser (USB version/powered)...
I have two extra cards sitting there...QQ
Real_Unhooked
Hero Member
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Activity: 838
Merit: 500
⇾
Re: Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
July 12, 2017, 05:47:27 PM
#25
Hello sorry for resurrecting an old thread
But I am using the same board with a 3770K CPU and the board will not post with 7 1070s. It works fine with 6 cards but the minute I add the 7th gpu I get a code 95 error.
Can I ask precisely what CPU and hardware did you use?
I do have a Celeron and a Xeon cpu at my disposal if the CPU is the cause of the issue. I was thinking some how the onboard GPU is not being disabled in the bios causing the 7th GPU to not post.
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Finally got 7x 7970 and 7x 7950 cards running on one motherboard!
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