Quote from -http://www.ncixus.com/go/?customercare#warranty
"NCIX warrants product(s) to be in good working condition and free from defects in material and workmanship for a period of one (1) year for OEM packages, and for thirty (30) days for RETAIL packages, from the original Invoice date unless otherwise restricted below or by the manufacturer's own warranty policy.
After that period, items are often covered by a manufacturer's warranty, but will vary depending on the product in question. Please refer to the manufacturer's web site for details".
Assuming that your R9 270x is a retail card, then the 30 days NICIX responsibility passed long time ago.
If so, you have to log to the warranty page of the original manufacturer (Asus, MSI, GA, or whatever) and find their warranty condition and RMA proccess.
No matter what you probably will have to "splurge" the shipping cost of the card to resolve the issue.
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