ASUS 6850 Overclocking

Hey guys! New here and noob in overclocking too.

My card is ASUS EAH 6850.

Got 2 questions:

1. MSI Afterburner doesn't change the Voltage. Although I enter 1200, it still runs the benchmark at 1.150 (stock). Haven't tried SmartDoctor or TriXX. And CCC doesn't allow voltage tweak as far as I know. What to do? Even tried setting UnlockVoltageControl=1 manually in MSIAfterburner.cfg.. Still no go.

2. I managed to just increase the Core Clock to 980 at stock voltage and run Kombustor for about 10 mins with no problems. Shouldn't I get white dots at such high clocks or the gpu should crash at stock voltage? (it crashes at 1000 though). Didn't touch Memory just yet. Is this normal or am I doing something wrong?

Thanks in advance!

Edit: Little update. I randomly tried 950 / 1150 at stock voltage. And no artifacts, white dots - nothing! How can it be? Temperature is at about 75 degrees. No crashes either. I am puzzled. In all reviews I see people say "we had to increase voltage to reach 950" etc etc..
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  1. XSCounter said:
    Hey guys! New here and noob in overclocking too.

    My card is ASUS EAH 6850.

    Got 2 questions:

    1. MSI Afterburner doesn't change the Voltage. Although I enter 1200, it still runs the benchmark at 1.150 (stock). Haven't tried SmartDoctor or TriXX. And CCC doesn't allow voltage tweak as far as I know. What to do? Even tried setting UnlockVoltageControl=1 manually in MSIAfterburner.cfg.. Still no go.

    2. I managed to just increase the Core Clock to 980 at stock voltage and run Kombustor for about 10 mins with no problems. Shouldn't I get white dots at such high clocks or the gpu should crash at stock voltage? (it crashes at 1000 though). Didn't touch Memory just yet. Is this normal or am I doing something wrong?

    Thanks in advance!

    Edit: Little update. I randomly tried 950 / 1150 at stock voltage. And no artifacts, white dots - nothing! How can it be? Temperature is at about 75 degrees. No crashes either. I am puzzled. In all reviews I see people say "we had to increase voltage to reach 950" etc etc..


    Edit:I made a screenshot as proof coz it seems people think I am mad :)



    950
    1150
    1.15v :confused: (although I set 1175 in Afterburner, it is still 1.15 in burn-in test)

    And no crash or anything :( I ran 3dMark11 and got very high scores compared to non-overclocked state before..
  2. try the asus tool for overclocking, it is possible to OC it to 950 @ stock voltage
  3. shrkbay said:
    try the asus tool for overclocking, it is possible to OC it to 950 @ stock voltage


    Tried SmartDocotr. Also can't change VCore :( Stays at 1.15..
  4. have you found a solution to this yet XSCounter? thanks
  5. amirp said:
    have you found a solution to this yet XSCounter? thanks


    Yep! Sapphire got awesome overclocking tool - Trixx. Works great for my card.
    http://www.sapphiretech.com/ssc/TriXX/
  6. thanks bro... yea after some googling i found that and it works...
    the card is great mine goes to 980... with some added voltage
  7. ^nice OC ;)
  8. Hi guys, i could need a word of advise. I have Sapphire 6850, X6 1055t OCed on 3.7 GHz, 4GB ddr3 ram, and Titan 212 + cooler. I unlocked the card using MSI afterburner (unofficialoverclocking 1), and got core voltage to 1265, core clock 1002, memory clock on 1216, and I got significant improvement in games (about 20% in crysis 2, 30 % in dragon age 2)...
    My question is following: can I put fan speed on auto (about 30 %), because when I put it on 100 % the fan sound is really loud... Temperature with 100 % fan never esceeded 73 C. But when I put it on auto, my system freezed when playin video on you tube ... Do u think I over overclock it? Is fan on auto causing instability?
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