Biggest novelty must be the reverse-flow pump design in Be Quiet's first AIO line-up: to reduce vibrations and noise to the max the fluid flow has been inverted. Instead of pushing the water onto the cold plate, the fluid flow is directed from the outer cavity, going upwards over the cold plate and the warmer fluid exists through a second level. The drawing below tells more than a thousand words ever could do.

Since these Silent Loops are expandable, which is a big plus over the real closed solutions from e.g. Corsair and Antec, a refill port is a must.  The new pump design is really small in design, with the hoses coming out of the top off the pump unit. Instead off using swiveling versions like the ones of the Kelvin version (pictured on the left) less parts prone to fail, reduced cost and less socket interference, win win in my book.  On top of that the used tubing is so flexible that the strain on the pump is minimized and tubing bending is no problem either thanks to the coil springs.

The cold plate is nickel plated making it a bit more scratch resistant. Below are the non nickel plated ones from the Cooler Master Eisberg on the left and the Kelvin S series on the right. The resemblance seems pretty clear :) All have the same origin at the Alphacool R&D team.

Let us take a look at the radiator, fans and accessories on the next page.