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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 107

post #1061 of 38704
Quote:
Originally Posted by Denim-187 View Post

/rr174 That command line....how do you use it? It tells you your cards VID in afterburner
Yeah but can't you run different clocks on the cards in crossfire?

Didn't we just go over this? Yes you can. You have to manually go to each card to set its clocks, set them differently. Try it.
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post #1062 of 38704
No man i know how to enable unofficial overclocking..... im talking about the /rr174 command line to see VIDs
Edited by Denim-187 - 1/18/12 at 9:24am
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post #1063 of 38704

 

Quote:
Originally Posted by Denim-187 View Post

No man i know how to enable unofficial overclocking..... im talking about the /rr174 command line to see VIDs



http://forums.guru3d.com/showthread.php?p=4221789

 

 

 

info-r7970.png

 

 

Quote:
A few interesting observations on Thaiti GPUs. First, it looks like similar to Fermi, Thaiti GPUs are binned and there are 4 types of Tahiti GPUs with different ASIC leakage level. So depending on it there are 4 possible default 3D voltages: 1.17500V, 1.11250V, 1.05000V and 1.02500V.
Currently all voltage control tools use hardcoded default voltage (1.175V) for 7970, so pressing "Reset"/"Defaults" buttons in any voltage control tool will put any GPU to 1.175V regardless of leakage level.
It looks like I have located the fuses identifying GPU leakage level, but I need more statistics on it. So if you have 7970 please run MSI Afterburner with the following command line switch:

MSIAfterburner.exe /rr174

Then post the result here, and don't forget to mention your default voltage as well.


 
Alexey Nicolaychuk aka Unwinder, RivaTuner creator

 

 


Edited by Ken1649 - 1/18/12 at 9:32am
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post #1064 of 38704
^
TY sir
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post #1065 of 38704
That's a big deviation. Cayman only had two to this four, damn.
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post #1066 of 38704
Easier way to identify the VIDs....
6 pin connecter on card :

Black = 1175mv
Grey = 1112mv or lower

WOW, coded
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post #1067 of 38704

Definitely lower is better for higher achievable clocks ohno-smiley.gif

 

Looks like really lucks of the draw this round axesmiley.png

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post #1068 of 38704
Anyone notice a pattern with what brands come with what VID or is it random?

My Asus is a 1175.
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post #1069 of 38704
Thread Starter 
I got a 2dc0 chip which is on the lower end of quality spectrum. frown.gif
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post #1070 of 38704
Turns out i have a champion overclocker that does 1200mhz @ 1138mv and can be pushed harder.

Coupled with a complete dud that hits an invisible wall at 1090mhz 1174 vid. 
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