Z97 OC Formula - Cannot run 3 GPUs

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   Hi guys. I will really appreciate if you can help me out with this one.
I have the "Z97 OC Formula" board with i5 CPU. I am running perfectly fine 2 x GTX 980 TIs on PCI-1 and PCI-2 slots. But when I plug in a third card ( GTX 970 ) on PCI-4 there is a strange message right after computer start that I need to install PSU's 4-pin connectors. I am using "FSP AURUM PRO 1200W AU-1200PRO" and I have connected 2 x 8 pin power connectors to the board ( one is 2x4 ) and the main 24 pin as well.

One more thing. I am not trying to do SLI mode, I just want those cards operational.

Thank you!

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smith2008 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 May 2016 Status: Offline Points: 6	Post Options Post Reply Quote smith2008 Report Post Thanks(0) Quote Reply Topic: Z97 OC Formula - Cannot run 3 GPUs Posted: 11 May 2016 at 5:46am
	Hi guys. I will really appreciate if you can help me out with this one. I have the "Z97 OC Formula" board with i5 CPU. I am running perfectly fine 2 x GTX 980 TIs on PCI-1 and PCI-2 slots. But when I plug in a third card ( GTX 970 ) on PCI-4 there is a strange message right after computer start that I need to install PSU's 4-pin connectors. I am using "FSP AURUM PRO 1200W AU-1200PRO" and I have connected 2 x 8 pin power connectors to the board ( one is 2x4 ) and the main 24 pin as well. One more thing. I am not trying to do SLI mode, I just want those cards operational. Thank you!

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 26118	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 11 May 2016 at 12:05pm
	There is a 4 pin molex connector at the top left of your board (looking at it with the IO panel at the top). That is designed to provide additional power to the PCIe slots when you have 3 or more GPUs installed.


smith2008 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 May 2016 Status: Offline Points: 6	Post Options Post Reply Quote smith2008 Report Post Thanks(0) Quote Reply Posted: 11 May 2016 at 12:18pm
	There are two "Hi-Density Power Connectors" on the top left side. And I have connected them both. The only thing I can think of is may be somehow they do not work because of the PSU or the board.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 26118	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 11 May 2016 at 1:15pm
	With the board in that orientation the molex connector I am referring to is at the bottom left. I put a box around it for you.


smith2008 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 May 2016 Status: Offline Points: 6	Post Options Post Reply Quote smith2008 Report Post Thanks(0) Quote Reply Posted: 11 May 2016 at 2:25pm
	Ah! It is behind the PSU, that's why I haven't seen it. Brilliant, thank you for your help.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 26118	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 11 May 2016 at 2:38pm
	No problem at all, let us know if it resolves the issue


smith2008 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 May 2016 Status: Offline Points: 6	Post Options Post Reply Quote smith2008 Report Post Thanks(0) Quote Reply Posted: 13 May 2016 at 3:57am
	Yes, it did. All three GPU are working flawlessly now. Thank you!

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Online Points: 26118	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 13 May 2016 at 11:49am
	Glad to be of help