I've never had to use Warranty RMA on a graphics card, and based on a quick search I wasn't expecting a quick painless experience with Sapphire... But, that's exactly what I got. My HD 7790 stopped behaving after 18 months of use so last month I requested an RMA, and received authorization and a shipping label the same day. From then it was just under 2 weeks and I had a replacement (refurb) card in hand. Now I just need a slot for it
On the other hand, I'm on my 3rd warranty RMA with Corsair memory (OK I'll stop buying cheap RAM), and that process typically takes about 4 weeks - but at least they've never refused to replace a defective unit. I've heard mostly positive reviews of EVGA's RMA process, which is one of the reasons I prefer them for Nvidia products. Any other positive RMA experiences? Most people who post about warranty service are griping, so it's hard to tell if any of the manufacturers out there are doing it right.