I bought a Vega 64 Sapphire nitro + from overclockers uk a week ago, and it has really bad coil whine. If I was to send it back for a replacement how long would it take before I got a new one, as I assume it would be a replacement from overclockers as it is within 30 days. Would it be easier to just return for a refund and buy a new one as then it would only take the delivery time of the new one to get a new one. (I have enough money spare to do this at the moment luckily).