yeah, why dont' you spend 50 dollars to buy a brick wall for flow?
those things are probably more useless than a hard drive cooler.
1) it absolutely does NOT increase your OC, one person tried, gained only 5mhz tops
2) it KILLS your flow, just lookat that design of that thing, at least four 90 degree bends and the block itself is thin so is very restrictive.
i mean, i personally think heat spreaders are more bling because these thigns look butt ugly anyways. so if you want your pump to cry, temps to go up and waste a lot of money, i recommend this piece of engineering
not to mention is alu, so you can't use it with any good waterblocks(they are made out of copper)