Finally got 7x 7970 and 7x 7950 cards running on one motherboard!

[karshek]

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]

Your PCI extender cables are probably shit.

[milbest20]

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]

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]

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.