@redlumloa:
Just take it easy as #### with those cards. Dont bend, press, shift, it more than necessary. It is _NOT_ manufactured to withstand much abuse at all... rather poor construction must I say.
Regarding the overclocking I must say that I agree with Cass. This is a rare piece of equipment and keeping it alive as long as possible should be prio no.1, atleast that is my opinion

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Good luck!
/Patrik