The D-Tek FuZion Accelerator Nozzle Kit is what makes the D-Tek CPU water blocks SO good. It allows you to fine tune your blocks cooling performance by adjusting the diameter of the inlet.
The kit also includes a washer which blocks up the gap between the two upper chambers resulting in significantly higher flow actually going though the bottom "cooling" chamber
These two changes obviously results in higher overall back pressure, but increase cooling performance.
If you want to watercool your computer then head on over to watercool.co.nz , to get all your watercooling products.
One person asked if the MCW-60 fits the 9800 series graphis cards. I E-mailed Swiftech and they confirmed that it does.
From what i can see they've increase the pin density, which should definitely increase cooling performance.. id love to know what else has changed.