We're talking about G.Skill, not Crucial. Crucial don't have a lifetime warranty.
I still reccomend the G.Skill RAM I chose.
You might be talking about G.Skill but he replied to his own post and was talking about Crucial :P
The Crucial 667MHz 3-3-3-12 stuff runs fine at 800MHz 4-4-4-12 and 1066MHz 5-5-5-15, these are actually roughly the same timings in terms of real time.
Plus with Crucial you are almost guaranteed to get Micron chips, and the fast/low latency stuff is all D9's
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