I've only had them for ~ a month or less. But they are both retail chips. C3 955's came out in november 2009 and 1055t's came out in may 2010. So at the very least, there's a 1.5 year warranty on the 955 and 2 years on the 1055t.
With that said, the 955 is pending right now, most likely sold.
But I also added the Asus Maximus 3 extreme motherboard
Interested in the 955BE, What's shipping like to Australia? Doesn't have to be over the top but online tracking would be good. Consider a trade for my GPU?