Overclock.net › Forums › Graphics Cards › AMD/ATI › help with twin 6850's not running at x16
New Posts  All Forums:Forum Nav:

help with twin 6850's not running at x16

post #1 of 5
Thread Starter 
Hey guys, I decided to start a new thread here in the hopes that more people might see and be able to help out. I've posted on my build log and a couple other threads, but I wanted my own thread for this to help stop filling up those other threads.

The issue I'm having is this:
I have 2 6850's installed in Xfire on my M5A99FX PRO 2.0. And up until just yesterday, they both ran at x16 mode.

The only change that has been made has been performing "The Red Mod" to both of them with Antec 620's.
Now, the 2nd card will only run at x8 mode.
Things tried so far:

I have tried cleaning the contacts on each card with rubbing alcohol, and also swapping the slots they were installed in.
Top card: x16
Bottom card: x8

Switching cards (the bottom card installed into the top slot) the one card still ran at x8 mode.
I have tried running GPU-Zs render test to see if it kicks into x16 mode, and running a couple of games as well, with no change.

I have tried reinstalling the latest Non-beta drivers (13.4) with a clean install.

I've looked around for other posts or sites talking about similar issues and possible fixes, but I havent been able to find much in the way of relevant yet. Most of what I find are people with boards that do not support dual GPUs at full x16. My board does support dual x16 mode. And had been running as such until yesterday.

If anybody could help out, I would be greatly appreciative.
-Dest
Destrto3
(17 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8120 M5A99FX PRO R2.0 Radeon R9 270X Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... 
RAMHard DriveHard DriveHard Drive
Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... SanDisk Extreme 240 Western Digital WDC WD10 EARS 1TB Seagate ST2000DM 2TB 
Optical DriveCoolingOSMonitor
TSSTcorp CDDVDW SH-222BB EK Supreme LTx (AMD) Windows 8.1 Sceptre 32" LCD Flat Panel TV 
KeyboardPowerCaseMouse
Cooler Master Devastator ThermalTake TR2 RX 850W Corsair Obsidian 750D Cooler Master Devastator 
Audio
OnBoard 
  hide details  
Reply
Destrto3
(17 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8120 M5A99FX PRO R2.0 Radeon R9 270X Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... 
RAMHard DriveHard DriveHard Drive
Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... SanDisk Extreme 240 Western Digital WDC WD10 EARS 1TB Seagate ST2000DM 2TB 
Optical DriveCoolingOSMonitor
TSSTcorp CDDVDW SH-222BB EK Supreme LTx (AMD) Windows 8.1 Sceptre 32" LCD Flat Panel TV 
KeyboardPowerCaseMouse
Cooler Master Devastator ThermalTake TR2 RX 850W Corsair Obsidian 750D Cooler Master Devastator 
Audio
OnBoard 
  hide details  
Reply
post #2 of 5
Have you tried disabling ULPS? You can do this through the Windows registry or with a program like MSI Afterburner.

Registry ULPS edit:


[HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control \\Class\\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys and then restart.
Sintel
(13 items)
 
Spare Parts
(11 items)
 
 
CPUMotherboardGraphicsRAM
I7 3770k @ 4.7 ASRock Z77 Extreme6 ASUS GTX 1080 Strix Samsung 30nm 1866MHz 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 120Gb Samsung 840 EVO 500Gb HGST Deskstar 2Tb Samsung SH-B123L Blu-ray 
CoolingOSMonitorPower
Corsair H110i GT Windows 7 64bit 60" Sharp Aquos 1080p 120Hz Corsair AX860 
Case
Corsair 750D 
CPUMotherboardGraphicsRAM
I5 3570k @ 4.5GHz ASRock Z77 Extreme4 ASUS RX480 Strix Samsung Wonder RAM 
Hard DriveOptical DriveCoolingOS
Crucial MX200 Samsung Blu-ray Corsair H100i Windows 10 64bit 
MonitorPowerCase
Vizio 58" 4K  Corsair CX 750 Lian Li Lancool Dragonlord PC-K62 
  hide details  
Reply
Sintel
(13 items)
 
Spare Parts
(11 items)
 
 
CPUMotherboardGraphicsRAM
I7 3770k @ 4.7 ASRock Z77 Extreme6 ASUS GTX 1080 Strix Samsung 30nm 1866MHz 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 120Gb Samsung 840 EVO 500Gb HGST Deskstar 2Tb Samsung SH-B123L Blu-ray 
CoolingOSMonitorPower
Corsair H110i GT Windows 7 64bit 60" Sharp Aquos 1080p 120Hz Corsair AX860 
Case
Corsair 750D 
CPUMotherboardGraphicsRAM
I5 3570k @ 4.5GHz ASRock Z77 Extreme4 ASUS RX480 Strix Samsung Wonder RAM 
Hard DriveOptical DriveCoolingOS
Crucial MX200 Samsung Blu-ray Corsair H100i Windows 10 64bit 
MonitorPowerCase
Vizio 58" 4K  Corsair CX 750 Lian Li Lancool Dragonlord PC-K62 
  hide details  
Reply
post #3 of 5
Thread Starter 
Quote:
Originally Posted by cmac68 View Post

Have you tried disabling ULPS? You can do this through the Windows registry or with a program like MSI Afterburner.

Registry ULPS edit:


[HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control \\Class\\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys and then restart.

Before I try this, what is this ULPS and what does it do?
Destrto3
(17 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8120 M5A99FX PRO R2.0 Radeon R9 270X Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... 
RAMHard DriveHard DriveHard Drive
Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... SanDisk Extreme 240 Western Digital WDC WD10 EARS 1TB Seagate ST2000DM 2TB 
Optical DriveCoolingOSMonitor
TSSTcorp CDDVDW SH-222BB EK Supreme LTx (AMD) Windows 8.1 Sceptre 32" LCD Flat Panel TV 
KeyboardPowerCaseMouse
Cooler Master Devastator ThermalTake TR2 RX 850W Corsair Obsidian 750D Cooler Master Devastator 
Audio
OnBoard 
  hide details  
Reply
Destrto3
(17 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8120 M5A99FX PRO R2.0 Radeon R9 270X Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... 
RAMHard DriveHard DriveHard Drive
Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... SanDisk Extreme 240 Western Digital WDC WD10 EARS 1TB Seagate ST2000DM 2TB 
Optical DriveCoolingOSMonitor
TSSTcorp CDDVDW SH-222BB EK Supreme LTx (AMD) Windows 8.1 Sceptre 32" LCD Flat Panel TV 
KeyboardPowerCaseMouse
Cooler Master Devastator ThermalTake TR2 RX 850W Corsair Obsidian 750D Cooler Master Devastator 
Audio
OnBoard 
  hide details  
Reply
post #4 of 5
Quote:
Originally Posted by Destrto View Post

Before I try this, what is this ULPS and what does it do?

It's a power saving feature that disables your slave graphics card when it's not in use.
If you tested the PCIe bandwidth in gaming/GPU-Z changing the ULPS probably won't change anything.
Try removing the graphics cards and checking in both 16x slot's if it only is detected with 8x in a single configuration, that means that you should test the affected card alone.
Check their performance in single, affected card vs not affected card, try to see if they reach about the same or if there is something wrong with the card... run them once per PCIe.

Thats the best suggestions I can give.
post #5 of 5
Thread Starter 
Well, I've determined that its the one card that is running at x8 in both x16 slots. The other card runs at x16 in both slots. So, from that, it looks like something with the card itself is going on. But i dont have much knowledge in troubleshooting graphics cards.

Just to note, Issue has not yet been fixed. Tried the Registry fix suggested, no change after rebooting and a fresh install to 13.6 beta 2 drivers.

I know there isnt much difference if one card runs at x8 instead of both at x16, but they are both "supposed" to run at x16, so I want to exhaust all options before just leaving it as is.
Edited by Destrto - 6/24/13 at 8:45pm
Destrto3
(17 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8120 M5A99FX PRO R2.0 Radeon R9 270X Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... 
RAMHard DriveHard DriveHard Drive
Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... SanDisk Extreme 240 Western Digital WDC WD10 EARS 1TB Seagate ST2000DM 2TB 
Optical DriveCoolingOSMonitor
TSSTcorp CDDVDW SH-222BB EK Supreme LTx (AMD) Windows 8.1 Sceptre 32" LCD Flat Panel TV 
KeyboardPowerCaseMouse
Cooler Master Devastator ThermalTake TR2 RX 850W Corsair Obsidian 750D Cooler Master Devastator 
Audio
OnBoard 
  hide details  
Reply
Destrto3
(17 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8120 M5A99FX PRO R2.0 Radeon R9 270X Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... 
RAMHard DriveHard DriveHard Drive
Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 ... SanDisk Extreme 240 Western Digital WDC WD10 EARS 1TB Seagate ST2000DM 2TB 
Optical DriveCoolingOSMonitor
TSSTcorp CDDVDW SH-222BB EK Supreme LTx (AMD) Windows 8.1 Sceptre 32" LCD Flat Panel TV 
KeyboardPowerCaseMouse
Cooler Master Devastator ThermalTake TR2 RX 850W Corsair Obsidian 750D Cooler Master Devastator 
Audio
OnBoard 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › help with twin 6850's not running at x16