O.k. I've been reading the forum for a while and build my own water cooling system, but it doesn't seem to be doing as well as I expected. It consists of a 1.2 TB @ 1.46, a 4x4x4 reservoir with a submersible Rio 600 pump (120 gph at 2') the Swiftech MCW462-B waterblock with Arctic Silver thermal compound, and the Dangerden cooling cube with an Adda 120mm 55 cfm fan. My cooling mixture is 90% distilled water 10% Water Wetter. All tubing and fittings are 3/8". My only method for temperature measurement is the one reported by the temp probe on my KT7A (I know it's not that accurate). Now, normal use temps are pretty good about 30C. However, when I run a stressing program like Prime95 or Counter-Strike temps reach up to 50C. How does everyone else out there have his or her systems plumbed? For example: from the reservoir to the block, to the radiator, back to the reservoir. Has anyone noticed if this can make a noticeable difference? It seems for some reason my cooling system isn't transferring the heat well and I'm not sure why. I've reseated the block once and that didn't help. It's pretty hard to screw up with the Swiftech. Any comments or recommendations would be greatly appreciated.