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7970 Trifire / Eyefinity Problems. Making Some Progress Now.

post #1 of 23
Thread Starter 
Hi guys,
If you have seen me around here of late you will know I have had a mare since buying my third 7970. Well, I figured I owe you all an update after your kind help, so here goes....

After a night of extensive messing around I have concluded that it is for certain the Tri-fire causing the problem. Tonight I have tried 3 different drivers and also did some 3DMark 11 runs on each driver, concluding that 12.96 is the best performing one on my machine. (In trifire - beating all my V12.95 scores)

Then I created a spreadsheet noting what each game will and, more usually, wont do.
(Load at all? Crossfire / trifire / single screen / infinity)

Then I pulled out one crossfire bridge at a time thuis testing triple / double / single cards.
Result = EVERYTHING bar Alan wake works fine in Single 7970 and Crossfire 7970, but virtually nothing works in Trifire.

The usual result for Tri-Fire + Eyefinity is a 116 BSOD referencing the ATI Driver, didnt have time to try everything with one mionitor tri-fire, may do that later this week, but doubt it as I simply want Eyefinity to work with everything as I love it.

I have just tried crossfire with both combinations of 2 cards, and works fine with each, so can be reasonably sure the cards are all ok. Looks like the tri-fire / eyefinity side of things simply isnt working yet.

I Guess I will just leave that 2nd bridge off for now and enjoy the hardware until AMD get round to fixing it for us. frown.gif
post #2 of 23
I'm a little confused. Do you have an extreme-z or a p8z68 motherboard?
     
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post #3 of 23
Thread Starter 
Quote:
Originally Posted by Blackout621 View Post

I'm a little confused. Do you have an extreme-z or a p8z68 motherboard?

Extreme Z now, why do you ask?
post #4 of 23
Quote:
Originally Posted by Stu-Crossfire View Post

Extreme Z now, why do you ask?

Okay good, because the description of the rig said p8z68 and the 3rd slot on that board was x4. Well, I hope everything works out for you! This makes me nervous, as I was going to run 3 7970s...
     
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post #5 of 23
Thread Starter 
Quote:
Originally Posted by Blackout621 View Post

Okay good, because the description of the rig said p8z68 and the 3rd slot on that board was x4. Well, I hope everything works out for you! This makes me nervous, as I was going to run 3 7970s...

Sorry, fixed that now, to go with the 3rd 7970 I had to buy a new mobo too.
Shame it doesnt work properly... Doh!
post #6 of 23
Are all the pcie lanes active?
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post #7 of 23
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

Are all the pcie lanes active?

Yes definately. Have also tested crossfire in both available configurations to ensure all lanes and cards work.
IE: slot 1 + 2 and Slot 1 + 3.
post #8 of 23

Stu,

 

Did you un-install Catalyst 12.1 CAP3 as suggested in many posts in your other threads? Sorry, not going to argue about AMD driver.

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post #9 of 23
Thread Starter 
Quote:
Originally Posted by Ken1649 View Post

Stu,

Did you un-install Catalyst 12.1 CAP3 as suggested in many posts in your other threads? Sorry, not going to argue about AMD driver.

Yes mate, went right back to the sapphire CD that came with that cards then slowly went forward from there.

Why do you ask mate? Are they known to actually cause problems with crossfire even though they are intended to fix them?

"Many threads"? Have I missed some replies?
If you mean this one, I replied and asked you some questions but you didnt get back to me.
Edited by Stu-Crossfire - 2/29/12 at 2:37am
post #10 of 23

 

Quote:
Originally Posted by Stu-Crossfire View Post

Quote:
Originally Posted by Ken1649 View Post

Stu,

Did you un-install Catalyst 12.1 CAP3 as suggested in many posts in your other threads? Sorry, not going to argue about AMD driver.

Yes mate, went right back to the sapphire CD that came with that cards then slowly went forward from there.
Why do you ask mate? Are they known to actually cause problems with crossfire even though they are intended to fix them?


The CAP is supposed to fix Alan Wake or Skyrim (don't remember) but has to be disabled in AMD CrossfireX 3D Applications settings. Otherwise, BSOD and crash for other games. After you unistalled CAP that ruled it out.

 

As we have discussed, did you try to set the third GPU as primary with all the monitors hooked up to take advantage of PCIe @x16 as opposed to @x8 in the first PCIe slot?

 

If Tri-Fire works fine with a single 1920x1200, I would suspect it has something to do with PCIe lanes. From single to Eyefinity, the amount of data is 3x per frame.

 

I am just trying to understand and if possible a solution. At this stage, I am not sure if this is hardware limitation to render Eyefinity resolution.

 

 

LL
 

 

 

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ケンジ
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