It's big! Big fan, lots of airflow for sure. Technically too big for the case I put it in, It is possible that I am wrong about my case size ATX and being Micro ATX. The width was correct, but the length was too long by 1/2" for the catch, holes for screws out the back matched up, so it's secure and fit, but not quite properly. The price was right, the fan is not audible in my opinion, seems like it will last (been used 24/7 for a month so far, without issue) I am only drawing 100-200w on it since the computer is a retro build though. It is not modular but I do like that it has the double CPU plug (if you can use it). I am satisfied even with the not-quite fit.