Message boards :
Number crunching :
Second GTX750 turns off.
Message board moderation
Author | Message |
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spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
I run dual GTX750Ti SC single fan, no connector for external power. The second card, that does not have monitor attached, keeps turning itself off. I have gone through 4 drivers over the past year, basically upgrading to the latest driver hoping for problem to go away. OS: Win7-64 Nvidia driver: 378.92 Anyone know anything about this issue? |
Zalster Send message Joined: 27 May 99 Posts: 5517 Credit: 528,817,460 RAC: 242 |
Both cards are same manufacturer? What does the first 30 lines of the start log say? |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
Does your PSU have a single 12v rail or is it of the dual 12v rail design? If the latter than that is likely where your problem is. Cheers. |
Brent Norman Send message Joined: 1 Dec 99 Posts: 2786 Credit: 685,657,289 RAC: 835 |
I'm thinking that possibly 'Power Options' is shutting off the seaming unused card when turning off the monitor. There is a setting for PCI power options in there as well. |
spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
Does your PSU have a single 12v rail or is it of the dual 12v rail design? Ah! Yes, my PSU is dual 12V rail. |
spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
I'm thinking that possibly 'Power Options' is shutting off the seaming unused card when turning off the monitor. I have: Turn Off Display set to Never. However, using the direction of your thinking, I have noticed: PCI Express->Link State Power Management->Maximum Power Saving. I changed it to Off. Will see if that changes anything. |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
Does your PSU have a single 12v rail or is it of the dual 12v rail design? Well you're using basically 1 rail to power mobo and those GPU's (probably overloading it and causing the 2nd GPU to shut down due to insufficient power) while the other rail is doing very little. If your problem continues then get a single 12v rail PSU. Cheers. |
spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
Does your PSU have a single 12v rail or is it of the dual 12v rail design? Sounds reasonable. I will keep this in mind. Side note. Last time when the card turned off I turned off BOINC, went to device manager, disabled the card (since it is the one that does not have monitor attached, I think that is the only way to figure out which card is which in device manager), then enabled the card. Started BOINC and both cards showed up. Did not even have to restart the pc (I was restarting the pc in the past when I saw that only one card is showing in BOINC). |
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