I bought a Noctua NT-H1 thermal paste last January 2012 and I haven't yet used it, though I already squeezed a tiny bit in order to check out the paste.
My original plan was to reseat my CPU cooler and use the NT-H1 and hope that my CPU temps would go down by about 2-3 degrees Celsius. But I thought that the effort of having to take apart my computer might not be worth it because I may end up not gaining anything.
I might just use it on my next build or when I find time to reseat my CPU cooler.
Can it last for another year?