The Tyee is a fine waterblock if you don't care about water flow. It's just too restrictive with all the angles and bends in it. Now, if it matters, getting a waterblock that is strictly dedicated for the GPU is much more condusive to better flow. THen, you get ramsinks for the memory because, truthfully, the videomemroy just doesn't really generate enough heat to warrant being cooled by water when raminks will do just fine for you
I bought the DD, cause its a GREAT design... I cant research each part I buy for this thing... If I did, the machine would be out of date before its finished, The DD keeps it REALLY cool... so why would I change it?