Would a cheap gtx 570 refurbished be an ok buy. Would it be safe to get and would it be reliable after purchase (I know it's a old card but I want it for the sake of waiting out for prices to drop on the gtx 1060 or 1070 when they are out for a while, I'm building a system) there was a few I saw on ebay, amazon etc that I found and I want one to use until I get a pascal card