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post #1051 of 38704
Quote:
Originally Posted by Tslm View Post

Odd thinking.gif
Seeing as how temp sensitive Tahiti is you'd think that would help some with overclocking if it ran cooler. It doesnt like voltage though so I guess thats the kicker

I can get the card to go all out 1150 mhz on lower voltage 1112mv perfect in furmark ( this is the 1174mv HIS bad clocker btw)
But come to game it crashs.... Work that one out too ....
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post #1052 of 38704
Quote:
Originally Posted by Tslm View Post

Odd thinking.gif
Seeing as how temp sensitive Tahiti is you'd think that would help some with overclocking if it ran cooler. It doesnt like voltage though so I guess thats the kicker

If we could monitor VRM and shader/mem temps you would probably see the "Dud" card heating up much more around those areas than his good card. Full coverage water block time!
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post #1053 of 38704
Quote:
Originally Posted by evensen007 View Post

If we could monitor VRM and shader/mem temps you would probably see the "Dud" card heating up much more around those areas than his good card. Full coverage water block time!

That's purely speculative. It's the silicon that dictates the overclock, not memory nor vrms.
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post #1054 of 38704
Can somebody tell me how to do that command line in afterburner plox thumb.gif
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post #1055 of 38704
Thread Starter 
I highly doubt that the VRM temps are limiting overclocks.
Something is causing the card to enter into a blank screen when stress testing at higher voltages, but what?
Sure I could speculate that the board has a max set current limitation that we are potentially reaching...
I want to know exactly what's causing the Black SOD. headscratch.gif
Quote:
Originally Posted by Denim-187 View Post

Can somebody tell me how to do that command line in afterburner plox thumb.gif
The what now?
Unofficial overclocking?
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post #1056 of 38704
Quote:
Originally Posted by Denim-187 View Post


I can get the card to go all out 1150 mhz on lower voltage 1112mv perfect in furmark ( this is the 1174mv HIS bad clocker btw)
But come to game it crashs.... Work that one out too ....


 

This thread is moving too fast for me nerdsmiley.png

 

To rule out if it has anything to do with the PSU PCIe +12V for the second 7970 and the PCIe lanes disparity (@x16/x4 or @x8/x4), remove the first 7970 then put the second one in and use the same PCIe power as the first one. Start the overclock from there.

 

That will tell you for sure how it can clocks and the limits. When you mix 2 to 4 cards in crossfire, there are many variables that could lead you to believe you got dud cards.

 

 

Enable "unofficial overclocking" HOW TO: Enable UNOFFICIAL overclocking mode in MSI AfterBurner

 

Or

 

-xcl

 

Create shortcut  "C:\Program Files (x86)\afterburner\MSIAfterburner.exe" -xcl

 

You will be prompted to restart PC. Upon reboot edit the shortcut and then remove the -xcl 

 


 

 

 


Edited by Ken1649 - 1/18/12 at 9:16am
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post #1057 of 38704
^^Adding to that. If you crossfire, it behooves you to test each card individually before making the crossfire group. You need to know each card's maximum, otherwise you will feel helpless when you cannot get all the cards to run the same speeds, when you don't know each cards individual limit.
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post #1058 of 38704
/rr174 That command line....how do you use it? It tells you your cards VID in afterburner
Quote:
Originally Posted by tsm106 View Post

^^Adding to that. If you crossfire, it behooves you to test each card individually before making the crossfire group. You need to know each card's maximum, otherwise you will feel helpless when you cannot get all the cards to run the same speeds, when you don't know each cards individual limit.
Yeah but can't you run different clocks on the cards in crossfire?
Edited by Denim-187 - 1/18/12 at 9:17am
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post #1059 of 38704
Thread Starter 
Make sure AB is not open and then:

C:\Program Files (x86)\MSI Afterburner
You would have to open up MSIAfterburner.cfg with the text editor and then change the last few lines in the bottom to:

UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2


It's important you set the UO mode to "2" in order to disable PowerPlay.
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post #1060 of 38704
Quote:
Originally Posted by Ken1649 View Post


This thread is moving too fast for me nerdsmiley.png

To rule out if it has anything to do with the PSU PCIe +12V for the second 7970 and the PCIe lanes disparity (@x16/x4 or @x8/x4), remove the first 7970 then put the second one in and use the same PCIe power as the first one. Start the overclock from there.

That will tell you for sure how it can clocks and the limits. When you mix 2 to 4 cards in crossfire, there are many variables that could lead you to believe you got dud cards.

It is the primary adapter, its getting sufficient power and the lanes are 8x like they should be. Weird how im perfectly 100% furmark stable but OCCT, GPUtool and Games tell me otherwise.
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