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Issue overclocking 6950 in crossfire

post #1 of 10
Thread Starter 
Hey guys trying to get both cards past the CCC limits in Xfire. Currently running Win 7 64 bit on an Asus P4P67 Deluxe board. I can get the first device card over the limits using smartdoctor or CCC or afterburner but the second card will no matter what I've tried remain constrained within the stock CCC limits of 840 and 1325. Anyone have any good ideas? Thanks in advance.



Intel core i7 2600k @4.5 GHz : Asus P4P67 Deluxe : Asus EAH HD6950 x2 : OCZ Reaper 4 x 2 GB : Crucial C300 64 GB SSD x 2 Raid 0 : WD Caviar Black 1TB : Corsair 850w
Edited by Sweetevo - 2/13/11 at 9:20am
post #2 of 10
This may be a dumb question to ask, but did you go into settings and check the box to apply settings to both cards together?
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post #3 of 10
Quote:
Originally Posted by M0E View Post
This may be a dumb question to ask, but did you go into settings and check the box to apply settings to both cards together?
Lol.
post #4 of 10
Thread Starter 
I had the box checked already in MSI afterburner to sync the cards, the problem is no matter what I've tried the secondary card listed in afterburner can go past the default 6950 clocks of 840 and 1325, however the master can only go that far. I'm scratching my head at this point Ive tried everything including doing the Unofficial Overclocking enable, re-flashing both cards, switching the cards in the PCI-x slots, uninstalling/reinstalling Afterburner and the ATI drivers and still cannot figure out why one card can clock up to 1215 core and 1625 mem clocks yet the other is stuck at 840 and 1325. FYI Both cards are asus EAH HD6950 with the unlocked shader bios on both. Any help is much appreciated.
post #5 of 10
Thread Starter 
Bump. Anyone?
post #6 of 10
After you set the OC in afterburner, where are you checking to get your clock speeds? GPUz?
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post #7 of 10
how much did you increase vcore?
post #8 of 10
Thread Starter 
Guys, Its not me trying to get to an X amount of Mhz for the overclock whats going on is that say I open up afterburner, smartdoctor or whatever other oc program you might use to increase core / ram clocks. The first (master card) limits are set at 840 mhz / 1325 mhz. That is where the slider bar stops and effectively gimping my total overclock. The 2nd Card limits for the OC slide bars are 1600 mhz core / 1600 mhz ram. I don't understand why the limits are so constrained on the first card but not the second card. Hope this helps you guys understand what Im talking about without me taking screenshots as Im at work right now.
post #9 of 10
What are your settings in EULA and UnofficialOverclocking in MSI AB cfg file, assuming that you're using 2.10 Beta 7.
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post #10 of 10
Don't use beta 7. Use beta 6, it should solve all your problems.
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My System
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2x500 Raid0 -250 OSX Dual Window7/Snow Leopard LG 32LD350 HDTV/Samsung T240 1920x1200 Cooler Master 550W 
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