With the BITWIN series, Jou Jye decided to leave the low-end PSU category and enter the midrange one. Without any doubt BW-B520JL is a good PSU featuring close to 1% voltage regulation at +12V and excellent ripple suppression. In addition Multi Link is a highly interesting concept since it gives the user the opportunity to combine two or more PSUs (if he has enough case space) to increase wattage.
The most significant drawback of BW-B520JL is the performance of 3.3V in sudden transient loads, where it registers significant voltage drops. Finally, we found its price a bit too high. If it could be lowered then it would make the BW-B520JL highly competitive and excellent choice for a user that seeks a budget, but good and reliable PSU for a single GPU system.