The paper is quite good and gives a lot of background information on nanoparticles and the affects on heat transfer. The things that are difficult to calculate are exactly what the Reynolds number for a typical CPU loop, CPU, NB loop or CPU, NB, GPU loop. My estimated calculations put it somewhere around 6000-7000. If you follow the curve of the test data provided in the paper, we would see a potential 1-3% performance gain using nanofluid. This actually lines up with the test data I collected.

It will be interesting to see if the Quad tests result in roughly the same performance percentage gain.