Question: what is the difference between modular and non modular power supplies?
Answer: Modular PSUs also take up more room in the case than non-modular models do. ... The connectors at the end of the cables add about about 1 /2-inch to 3/4 -inch to the PSU's length. Non-modular PSUs, on the other hand, don't have connectors on the PSU end, since the cables simply jut out the rear of the unit.