Yeah the thermalright V-1 will certainly get you better temps, but there are a few dangers to take note of: first off, if your case uses an inverted motherboard setup (like the Lian li V1000), you can't use the V-1, since it messes up the function of the heatpipes. Second, (and this is purely speculation based on the given specs) it appears that the V-1 is louder than the zalman, at more than 30dBA. The zalman will cool you down plenty at 5v (they supply a very handy connector for undervolting fans) and is dead silent. Just some things to keep in mind, but either will serve you well.