what is the best mining intenisty to use for certain grahpichs cards? I use cgminer and I have a zotac nvidia geforce gtx 680 graphics card, what is the best intensity to use.
I would not bother using a nvidia graphic card but the choice is yours from experience they run way to hot and don't produce enough power especially at current difficulty. Anyway take a look at this list https://en.bitcoin.it/wiki/Mining_hardware_comparison it lists a lot of best settings as well as gives you an idea if your card is hitting the hashing rate that it should be.