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Crossfire 6970 OC Issue

post #1 of 2
Thread Starter 
I'm having a strange issue with instability when OCing my crossfire 6970s. I spent last night OCing one of the cards, intending to OC the other one seperately. Both of them were already working stable at the standard 950/1450 @1.175V. I pushed the first card to 980/1450 @1.2V completely stable, using this methodology:

-Start MSI AB
-Increase voltage to 1.2V
-Increase clock (in increments of 10MHz)
-Close MSI AB
-Open two instances of GPU-Z to watch temps and load from both cards
-Start Furmark and rrun Burn-in at 1080 for 15min, close Furmark
-Start OCCP, test on indefinite settings for 5min
-Start 3DMark 11, bench on standard Performance, benchmarks only
-Consider stable, start process again

All was working great until I tried the first card at 990/1450 @1.2V. 3DMark 11 crashed midway through. I tried 990/1450 @1.3V, 3DMark11 made it through. Here's where it gets sticky. I tried 1000/1450 @1.3V and 3DMark 11 crashed. I thought, "Seems a little low but I guess 990/1450 @1.3V must be my stable max on this card." I bumped my settings on card one back to 990/1450 @1.3V.

Next I tried card two. First bump to 960/1450 @1.2V kills 3DMark 11. I'm thinking to myself "this is really weird" but I try it at 1.3V and it BSODs midway through 3DMark 11. This was last night and it was getting late so I went to bed. Boot the computer up this morning and system freezes on login. Restart. At this point I'm thinking card one must still be unstable so I bump card 2 back to 950/1450 @1.175V and then dial card 1 back to 980/1450 @1.25V. 3DMark 11 causes BSOD halfway through. At this point I'm freaking out so I restart, dial both cards back to 950/1450 @1.175V (an OC I've been totally stable at for almost a month) and try 3DMark 11 again. BSOD. ***?

My question is: what am I doing wrong? Both OCCP and Furmark show complete stability at all settings tested, yet 3DMark 11 either simply crashes or BSODs. At first I thought that this was because Furmark is all over the place on core clock so it's not pushing max OC constantly and therefore is less prone to errors, and OCCP cycles consistently between high and lower clocks so same thing, whereas 3DMark 11 pushes core clock all the way up for the entirety of the bench. Now though, after I've put both cards back to safe levels, why would 3DMark 11 still be crashing? Is it a problem with 3DMark 11?

Anyway, anyone who can help me will be my savior.
    
CPUMotherboardGraphicsRAM
Phenom II X6 1100T ASUS Crosshair IV Formula 2x ASUS EAH6970 Team Xtreem LV Series 8GB @ 2000MHz 
Hard DriveOSMonitorKeyboard
Intel 510 Series 120GB SATA SSD Windows 7 2x Samsung SyncMaster Microsoft Sidewinder X4 
PowerCaseMouse
ENERMAX REVOLUTION85+ ERV1020EWT 1020W NZXT Tempest Logitech G500 
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CPUMotherboardGraphicsRAM
Phenom II X6 1100T ASUS Crosshair IV Formula 2x ASUS EAH6970 Team Xtreem LV Series 8GB @ 2000MHz 
Hard DriveOSMonitorKeyboard
Intel 510 Series 120GB SATA SSD Windows 7 2x Samsung SyncMaster Microsoft Sidewinder X4 
PowerCaseMouse
ENERMAX REVOLUTION85+ ERV1020EWT 1020W NZXT Tempest Logitech G500 
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Reply
post #2 of 2
1. Uninstall Catalyst + CAP, restart PC. Uninstall Afterburner, restart PC.

2. Install [B]WHQL Catalyst 11.9 + CAP3
Download Link: WHQL Catalyst 11.9 + CAP3

3. Install Afterburner 2.2.0 Beta 8.

4. For Crossfire Users and running Afterburner, disable ULPS

To disable ULPS:

1. Go to regedit (start > search programs and files > "regedit").
2. In drop down menu: find file > type "enableulps".
3. For ALL instances (keep pressing F3) change the "1" value to a "0".
4. Reboot PC.
Edited by Ken1649 - 10/25/11 at 4:13am
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
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ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
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