The worst part is that I ended up buying Zotac 3GB mini 1060's, the worst cards to have. I was told upfront that they carry a 5 year warranty, however 3 out of 10 died within 1 1/2 month of buying and upon visiting the service center, I got to know that the warranty is only 2 years unless I register within 28 days of purchase.

It was not mentioned anywhere on the package or inside the box.

I tried mailing Zotac support telling them about the issue and requesting for validating the extended warranty, however got a very rude response.

On the other hand my 480's are working like charm day and night since last 6 months.

I don't know how many times, I would need to replace the cards within 2 years (resulting in downtime) and if I could ever be able to use them after 2 years.

Would never buy any Zotac card in future and am sharing my experience hoping I might end up saving someone's money.

Many people have agreed that hynix memory cards could not be overclocked much, however in Zotac's case, you can't even expect a +100, the miner dies.