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PCI-E extender issues

post #1 of 5
Thread Starter 
I recently purchased two 770s, however, I need to use PCI-E extenders to make them work in my case.

Space is extremely limited, so I needed to use extremely compact extenders as well. I purchased two of these and they fit perfectly.

However, I can't get my system to run properly with them installed. My main issue with solving this is that the problem is very intermittent. The most common issue, is that the computer will start up, but the monitor will just say that there is no input. Sometimes the computer will start up fine, then lose connection with the monitor during startup. And finally, sometimes the computer will start up fine, then lose connection as soon as I try to do anything remotely intensive.

I have the computer set up on a bench (without the ribbon cables) right now, and I have been able to do a little troubleshooting. I can sometimes get everything to run just fine when I have one 770 plugged into the mobo directly and the other on a ribbon cable, but it is still intermittent with the device on the extender running into a problem.

When I do have a chance to look at gpu in the device manager, I either get code 43 or code 12 as the problem.

Anyone have any idea what I need to do to get this working? There is next to no information available on extenders, so I'm kind of at a loss here.
BlueShift
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BlueShift
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post #2 of 5
I got no clue, but I would try to rule out a faulty extender or faulty pci-e slot.

With your 1 GPU in motherboard and 2nd on an extender, you tested both extenders (to make sure one of them isnt faulty) ? Also I would try testing a single gpu in the 2nd pci-e slot just to make sure the PCI-e slot itself isnt faulty.
Spit in God's Eye
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Spit in God's Eye
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post #3 of 5
Thread Starter 
Everything is running fine without the ribbon cables. I can't really tell if the extenders are bad, since they don't work (I assume for other reasons).
BlueShift
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BlueShift
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post #4 of 5
In my experience, the PCI-E ribbon cables are either a hit or miss.

I would try a different brand/model of the ribbon cables if possible, some just seem to work and others don't.

Lastly you may want to try disabling PCI-E 3.0 from MB BIOS and set 2.0 instead.
jfreeZr
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hadronGTX
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jfreeZr
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hadronGTX
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2x Samsung EVO RAID0 Phase Change Win8.1 64 Catleap 27" 2560x1440 110Hz 
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EVGA SuperNOVA 1000 P2 Primochill Wet Bench Core3D + Sennheiser HD595 + iBasso Amp 
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post #5 of 5
Thread Starter 
I had checked my BIOS before for PCI-E options but I didn't really see much. Where can I disable 3.0?
BlueShift
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RAMHard DriveOptical DriveCooling
PNY 8gb(XSPC RAM Spreader) Samsung Spinpoint f3 1tb Acer? Asus? XSPC Raystorm CPU block 
CoolingOSMonitorMonitor
2x DangerDen GPU blocks Windows 7 2x Acer 21.5" Asus 21.5" 
KeyboardPowerCaseMouse
Gigabyte Rosewell Xtreme Series 750w HAF 932 Gigabyte 
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BlueShift
(16 items)
 
  
CPUMotherboardGraphicsGraphics
AMD FX-4170 MSI 990-FXA GD80V2 MSI Twin Frozr GTX 460 ASUS GTX 460 Hawk 
RAMHard DriveOptical DriveCooling
PNY 8gb(XSPC RAM Spreader) Samsung Spinpoint f3 1tb Acer? Asus? XSPC Raystorm CPU block 
CoolingOSMonitorMonitor
2x DangerDen GPU blocks Windows 7 2x Acer 21.5" Asus 21.5" 
KeyboardPowerCaseMouse
Gigabyte Rosewell Xtreme Series 750w HAF 932 Gigabyte 
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Reply
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