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overclocking 6970 in crossfire question

post #1 of 16
Thread Starter 
hey everybody so i have been toying around with my sapphire 6970s and im coming to the point were i wanted to overclock them so i can get better fps in crysis 2 at 5760x1080 but if i go above 910 core clock or 1380 memory clock i get hit with Blue screens alll day so what am i doing wrong? anyone want to shed some light on this?
post #2 of 16
Plug in the 12v four pin molex at the bottom of the mobo to give more stable juice to your cards.
    
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post #3 of 16
Thread Starter 
i had to RMA my asus maximus and they said it was going to take a 3 weeks to get a new one so i went and got a Asus p8p67 deluxe board until then so i dont have the 4 pin anymore
post #4 of 16
Thread Starter 
nice man like i said the cards are great but im wondering how i can max out clocks 950 and 1450 on amd overdrive with 1 card but with 2 its like pulling teeth
post #5 of 16
You need more voltage to your cards then.

Try Afterburner and up the voltage a tad.
    
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post #6 of 16
It sucks if you cannot go over 910 with stock volts....you can use MSI AB. But I had butt load of trouble with MSI AB and crossfire.
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post #7 of 16
I have 6970's in crossfire and there seems to be a general problem with overclocking on them.. cant overclock them too much as they bluescreen but seem to be better with ccc11.4
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post #8 of 16
I flashed my 6950s with the HIS 6970 toxic bios. Which up the voltages a bit. I also just OC'd them a bit to 950/1450 levels. Just made the changes in CCC and haven't yet tested them.

Also check if your power supply is adequate enough for two 6970s. I couldnt tell as your sig has it missing. Like someone else mentioned earlier, what drivers are you running? 11.4s are the most stable currently. You should easily hit that oc on stock voltages.
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post #9 of 16
Quote:
Originally Posted by Awaz View Post
It sucks if you cannot go over 910 with stock volts....you can use MSI AB. But I had butt load of trouble with MSI AB and crossfire.
Did you do the ULPS registry removal for CCC? You have to do so with MSI AB or you receive immediate bsod's.
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My System
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2x128 Cruical M4 SSD RAID 0 - 2x1TB WD Blues RA... Dvd-Rw Custom Water Loop Win 8.1 64bit 
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ASUS Rog Swift + 2 Dell U2414h 24" Corsair K70 Xcilio 1000watt Corsair Air 540 with Koolance ERM 2K3U  
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post #10 of 16
good point there adamwzl. ULPS and MSI AB does not play nice. I used registry hack method of overclock and did not have to mess with ULPS.

My issues were different though - overclocking not sticking with one GPU and powerplay messing up causing one GPU to be always on full load, etc.
Wife's bane
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i5-3570K @ 4.5 Ghz Gigabyte Z77 UD3H HIS R9-290 8 GB Samsung Wonder RAM 
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GPU cooling - XSPC Razer full GPU blocks Win 7 Home Premium Asus PB278Q 2560 X 1440p ISP Logitech G15 
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Wife's bane
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K @ 4.5 Ghz Gigabyte Z77 UD3H HIS R9-290 8 GB Samsung Wonder RAM 
Hard DriveHard DriveOptical DriveCooling
Crucial SSD for OS Samsung Spinpoint F3 Asus XSPC water block, 360 radiator, and 720 reservo... 
CoolingOSMonitorKeyboard
GPU cooling - XSPC Razer full GPU blocks Win 7 Home Premium Asus PB278Q 2560 X 1440p ISP Logitech G15 
PowerCaseMouseMouse Pad
NZXT Hale90 V2 NZXT Switch 810 Logitech G500 Steelseries QcK 
Audio
Optical out to Sony receiver; Deftech Monitor 3... 
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