I think I would rather be satisfied with a moderate overclock, or even none at all, then have to worry that my exotic cooling system could fail any minute (and take my CPU and possibly even my motherboard with it, like H2O systems can...)
I know some of you will consider this sacreligious, but it seems like there is a point of diminishing returns where you reach a certain overclock and then the cost of cooling outwieghs the benefits of the extra megahertz. I suppose if I had a system I was just tinkering with that wasn't my primary computer, maybe it would be fun to push the envelope, like a science project. But for my everyday system, I'll just be content with the good-old fan/heatsink until something more fool-proof comes along.
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