To a certain extent, yes. For example, if you were to have the best cooler which will be able to bring down the temperature are keep it within safe temperatures, it is possible to squeeze those frames out of your card. However, even as you are able to overclock it extremely, you must notice the following things:
-Overclocking reduces lifespan
-there is a locked limit of internal and external clock speeds in other words, the card's architecture has a limit that you cannot push over, a possible symtom is artifacts even when the card is well cooled
But I think it's rather ok to overclock it. I don't think you are new to overclocking so you'll probably know your limits.
