The following graph shows the NAS' total performance rating, comparing it to other units. The comparison is pretty straight forward as the tested unit is shown as 100% and every other unit is relative to it. Please note that we only measure the raw performance in the graph below, not each unit's functionality and feature set.
The following graph will be the most interesting to most of you because it shows you how much the NAS' performance will set you back. We looked the current USD price of each NAS up on Newegg and used it and all relative performance numbers to calculate the performance-per-dollar index. We search for the unit at other popular online shops (Tigerdirect, Amazon) if Newegg doesn't stock the NAS, and, if the unit is not sold in the U.S., we search popular EU shops (e.g. Caseking), converting its price to US dollars.