Guys&Gals.
Made some progress. After putting in place a more aggresive fan profile...I am now down to 1165mv/880/1375 stable!!!
I was also wanted to comment that 11.4's CCC.EXE was giving me some serious hitching in both World of Warcraft and Portal 2.
I uninstalled it....and the hitching it...
Running a Asus P7P55D Deluxe......and the cards are essentially right on each other. Short bridge.
I'll give the GPU-Z log a try. What would you recommend first? Different fan profile or longer Xfire bridge? After that.....case modification on top of what I've already done.
I think its heat.
LOL!/Uhg.
I turned on fans to 50% constant and no more freezing at the same exact point. That combined with turning off ULPS, makes the 880/1375/1175mV OC stable @ 3x AVP bench, which I have *never* been able to achieve before, before always freezing at the beginning of the...
System is as follows:
i5-750 @ 4.2Ghz. Completely stable long before my two new 6950's. Previously ran crossfire 5770's OC'ed no stability problems.
8gb (2x4) DDR3 1600
Asus P7P55D Deluxe
Corsair 850TX
5 120mm Fans.
2 7200 Sata HD's
2 DVD drives
2 Sapphire Reference 6950's Both are shader...
FINALLY figured out what the problem was.
Not drivers, shaders, unlock, crossfire, or whatever.
It was power. Don't try to run two 6970's on a 750watt Antec.
Alone each will bench 100% stable 5loops of AVP with 1536 shaders and 880/1375/1175mv. Problem solved. Tomorrow I put in my...
Forgive my diarrhea post there.
I've eliminated alot of the variables. Drivers and OC utilities were not the culprit. Insufficient power is not the culprit. It seemed to be my second card not wanting to cooperate and also the one behaving oddly after OC. So I took it out and tested it alone...
Recently got two Sapphire reference 6950's. Pulled out the bios with GPU-Z. Modifed with RBE. Reflashed with ATIWinflash.
Cards are 100% stable with 1536 shaders in crossfire mode at stock 1.1V/800/1250.
However, I'm having real troubles trying to get them up to 6970 speeds.
First off...