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PNY are actually quite decent when it comes to warranty, I purchased a 770 whilst I was staying in the States brought it home (UK) and it wouldn't work so I contacted PNY, they arranged for a replacement to be sent out and I received it within the week. This was when the 770 was released (last June) and I've been running the replacement since with no issues. Mine uses Samsung ram, I don't know if that practice runs through the whole range or just the 770.