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Mine was like this, I returned it as faulty. It was running in the 80s and was much louder than the reference card.Something to be aware of - some of the GHZ edition 780tis were rushed out with poor fitting coolers (get very hot with fan running high speeds in games) so make sure it isn't one of those before swapping.
Wouldn't bother swapping personally thuogh the backplate does look nice and seems to be good for around 3C lower temps in my experience.
Keep your classy imo and you can always redo the paste see if that helps your temps