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Title: Dummy plug / multi GPU guide Post by: statdude on May 23, 2013, 10:22:10 PM Hi all,
Couldn't get more than 2x 5970 to work yesterday and I'm assuming its a dummy plug issue. Card on board w/o monitor plug in would go "SICK" Can anyone point me in the right direction? Title: Re: Dummy plug / multi GPU guide Post by: induktor on May 25, 2013, 05:33:25 AM Hi all, Couldn't get more than 2x 5970 to work yesterday and I'm assuming its a dummy plug issue. Card on board w/o monitor plug in would go "SICK" Can anyone point me in the right direction? windows or linux? Title: Re: Dummy plug / multi GPU guide Post by: statdude on May 25, 2013, 11:58:22 PM Windows... two cards on board, one on riser. Whichever card on board isn't plugged into monitor, gets "Sick"
Title: Re: Dummy plug / multi GPU guide Post by: induktor on May 26, 2013, 01:14:16 AM Windows... two cards on board, one on riser. Whichever card on board isn't plugged into monitor, gets "Sick" Install trixx and check in settings> Disable ULPS that should do it. make sure your motherboard likes the risers!, I have an ASUS M4N75TD that refuses to work with pcie risers at all, all of my other motherboards has no problem, but this one has a serious attitude! :) Title: Re: Dummy plug / multi GPU guide Post by: qbits on May 27, 2013, 10:17:57 AM Windows... two cards on board, one on riser. Whichever card on board isn't plugged into monitor, gets "Sick" Put at least video cable into the card with no monitor. You should have those laying around right? Title: Re: Dummy plug / multi GPU guide Post by: deslok on May 28, 2013, 03:33:36 PM video cable is no good, but you can use a single 75 ohm resistor from radioshack to jump pins on the plug inplace of a dummy plug(cheaper and easier to get resistors)
Directions: http://blog.zorinaq.com/?e=11 Title: Re: Dummy plug / multi GPU guide Post by: statdude on May 29, 2013, 03:23:02 AM Windows... two cards on board, one on riser. Whichever card on board isn't plugged into monitor, gets "Sick" Install trixx and check in settings> Disable ULPS that should do it. make sure your motherboard likes the risers!, I have an ASUS M4N75TD that refuses to work with pcie risers at all, all of my other motherboards has no problem, but this one has a serious attitude! :) worked! youre a genius! Title: Re: Dummy plug / multi GPU guide Post by: kodo on May 29, 2013, 04:58:36 AM very good information in this thread, thanks!
Title: Re: Dummy plug / multi GPU guide Post by: TiborB on May 29, 2013, 11:40:11 PM Just for your info, this is merely a windows issue - a dummy plug is not necessary when you run Linux. Multiple GPUs hashing fine without anything connected.
Hope this helps, T Title: Re: Dummy plug / multi GPU guide Post by: MrBilling on May 30, 2013, 02:27:13 AM All of my GPUs run fine in both Windows 7 and 8 with no dummy plugs. No crossfire either.
And I have two different rigs on two different mobos. One is a five 7950 rig and one is a three 7950 rig. I have two five 7950 rigs running BAMT that also do not need dummy plugs. So it must be certain mobos require it. |