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Thread: How should you overclock your card?

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    Default How should you overclock your card?

    How should you overclock your card? and what is safe overclock with your card?

    Do not make mistake and directly overclock your card by 50 MHZ. This is common mistake made by many people. Also many people ask what is safe overclock range for my card? There is no particular answer to this question. Every card is different and has different overclocking potential. Follow the following procedure to get the best overclock with your card with what cooling you have for now.

    1. Increase your core and memory speeds by 5 Mhz each atmost at a time.
    2. After you overclock run a benchmarking software like 3dmark2001 or 3dmark2003 or software like "rthdribl"( this is my personal choice as this really pushes the card to max but will only run on Dx9 cards) or some graphic intensive game for 5 minutes.
    3. If you dont see any screen corruptions, small black triangles, white or black dots and artifacts then it means this speed is ok for you.
    4. Again increase your clock and memory speeds by 5 MHz and again run the benchmark or game.
    5. Keep doing this until you get system crash or lockdown or artifacts/white-black dots, screen corruption. This is the absolute limit og your card.
    6. When you see these symptoms reduce your clock and memory speed by 10 Mhz.
    7. Now try just overclocking RAM and not the core again in steps of 5Mhz until you get artifacts or above symptoms.
    8. when you get artifacts again reduce the memory speed by 10Mhz and this is your final safest settings.
    9. Always run your card atleast 10Mhz slower than the speeds at which you get artifacts.
    10. If ram doesn't overclock more the you may try same thing with core only keeping RAM speed constant.

    Is extra cooling needed if I overclock?

    Its not necessary but recommended. Have a good airflow in your case. A fan blowing air directly on card always helps.

    Quote Originally Posted by Mazhar
    Overclock the core, by 5mhz increments (not the memory first), till you see artifacts after gaming (preferably crysis) for atleast 20minutes, or running atleast 3dmark 06 (not an earlier version) for 20-25 mins

    After finding maximum core speed(ie. speed at which computer hangs or you see artifacts), find the maximum memory speed in the same way.

    For ATI users, simply download ATITool from HERE. It will save you a lot of hassle simply because you can test for artifacts, and there is even an auto-oc option which usually works very well, and is helpful for inexperienced overclockers

    A rule of thumb is to always underclock the core by 20mhz, and the memory by 10mhz after getting the final overclock, atleast in BD. For GDDR5 memory chips, underclock the memory by 15mhz, not 10.

    Now to some serious overclocking and cooling
    If you have some experience of overclocking and feel confident enough to move one here comes some serious overclocking.

    Before I move on to this there is small thing you can do. If your bios support it try increasing AGP voltage ( AGP VDDQ ) This helps to get little bit more overclock out of the card.

    If you do feel like you have reached limits of your card and still want to overclock more the watercooling is a way to go. Watercooling increase the possibility of overclock by almost 30% more overclock than air cooling.
    Also remember that watercooling also runs card a lot cooler resulting in increase life of your hardware.
    You can use watercooling just for your videocard. You will need a good waterblock. And the best one are Maze4GPU waterblock by dangerden which can be found at www.dangerden.com. The other good one is Swiftech.

    There are also voltmods you can do but requires knowledge in electronics and some soldering experience.

    ATI/Nvidia Users can see how their card are being modified from here.


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    Last edited by Hamilton; September 10th, 2009 at 09:18. Reason: Spelling Mistake

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    Default Re: How should you overclock your card?

    nice post for noobs like me
    but i don't understand if it's worth overclocking my card
    01000010011000010111101001101001011011100110011101100001001000010010000100100001 001000000011101001010000

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    Default Re: How should you overclock your card?

    Hamilton, I would not overclock the core and memory together by 5mhz. Its best not to.

    Overclock the core, by 5mhz increments (not the memory first), till you see artifacts after gaming (preferably crysis) for atleast 20minutes, or running atleast 3dmark 06 (not an earlier version) for 20-25 mins

    After finding maximum core speed(ie. speed at which computer hangs or you see artifacts), find the maximum memory speed in the same way.

    For ATI users, simply download ATITool from HERE. It will save you a lot of hassle simply because you can test for artifacts, and there is even an auto-oc option which usually works very well, and is helpful for inexperienced overclockers

    A rule of thumb is to always underclock the core by 20mhz, and the memory by 10mhz after getting the final overclock, atleast in BD. For GDDR5 memory chips, underclock the memory by 15mhz, not 10.

    Add these details to your post. it will be more helpful, but nice attempt anyway

  4. #4
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    Default Re: How should you overclock your card?

    Quote Originally Posted by Mazhar View Post
    Hamilton, I would not overclock the core and memory together by 5mhz. Its best not to.

    Overclock the core, by 5mhz increments (not the memory first), till you see artifacts after gaming (preferably crysis) for atleast 20minutes, or running atleast 3dmark 06 (not an earlier version) for 20-25 mins

    After finding maximum core speed(ie. speed at which computer hangs or you see artifacts), find the maximum memory speed in the same way.

    For ATI users, simply download ATITool from HERE. It will save you a lot of hassle simply because you can test for artifacts, and there is even an auto-oc option which usually works very well, and is helpful for inexperienced overclockers

    A rule of thumb is to always underclock the core by 20mhz, and the memory by 10mhz after getting the final overclock, atleast in BD. For GDDR5 memory chips, underclock the memory by 15mhz, not 10.

    Add these details to your post. it will be more helpful, but nice attempt anyway
    Hey......... Done
    and More info added as well.

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