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Getting An HD 6770 1gb GDDR5, want to OC it, and need help.

post #1 of 3
Thread Starter 
this is the one im getting.
http://www.microcenter.com/single_product_results.phtml?product_id=0372693

have any of u used this specific one? how should i OC it, and how far could i take it?

Strickly sticking to this card, im not buying it at the price in the link.
so tell me, what can we do with this?
post #2 of 3
Every card will OC differently. Even if they are the same make and model.

Only thing I can suggest is to get what ever app AMD uses for OC'ing. Not sure what it is.

You will want to raise the core shaders/clock in increments of 10mhz until it is unstable. I.E. you get artifacts or it crashes. Once this happnes, You will need to raise the voltage on the card until it is stable again. Rinse and repeat until either you are at your goal, the card will not stay stable no matter how much voltage you have, or you just get another card and xfire them. Also, watch temps. Stay under 80 althought they say anything under 99 is safe. That card looks like it is really lacking in cooling ability. Temps can also be the most limiting factors in OC'ing a card.

Leave the memory alone until you find the highest stable clock speed. Then, try raising the memory speed in 10 MHZ increments. I would only go until it is unstable and then back it off a few MHZ. Do not add more voltage to OC the memory. It will not give you that much of a gain.

Use kumbustor. 3d mark 11, or unigen heavne to test stability. Heaven will probably be the best way to test it.
post #3 of 3
Thread Starter 
Quote:
Originally Posted by selluminis View Post

Every card will OC differently. Even if they are the same make and model.
Only thing I can suggest is to get what ever app AMD uses for OC'ing. Not sure what it is.
You will want to raise the core shaders/clock in increments of 10mhz until it is unstable. I.E. you get artifacts or it crashes. Once this happnes, You will need to raise the voltage on the card until it is stable again. Rinse and repeat until either you are at your goal, the card will not stay stable no matter how much voltage you have, or you just get another card and xfire them. Also, watch temps. Stay under 80 althought they say anything under 99 is safe. That card looks like it is really lacking in cooling ability. Temps can also be the most limiting factors in OC'ing a card.
Leave the memory alone until you find the highest stable clock speed. Then, try raising the memory speed in 10 MHZ increments. I would only go until it is unstable and then back it off a few MHZ. Do not add more voltage to OC the memory. It will not give you that much of a gain.
Use kumbustor. 3d mark 11, or unigen heavne to test stability. Heaven will probably be the best way to test it.

Thanks man, helps a lot! biggrin.gif
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