The be quiet! Pure Power L8 700W power supply has a maximum wattage output of 700W. This should run most PC builds with ease, but might not be enough for power hungry graphics card setups such as SLI or Crossfire combinations. Remember that a higher PSU capacity does not necessarily equate to a higher wattage output and a more expensive electricity bill. In fact, you may find that a higher capacity PSU will function more efficiently than a lower capacity PSU because it is dealing with a lower percentage of its maximum load - that is, it is not being stressed to the same extent.

The be quiet! Pure Power L8 700W has an 80 Plus rating of Bronze. This means the PSU operates at average efficiency levels of at least 82%, 85%, and 82% for loads of 100%, 50%, and 20% respectively. Bronze is the fourth-best 80 Plus certificate available, and as such the be quiet! Pure Power L8 700W is very efficient and is a decent PSU choice. The actual efficiencies for this PSU are 84.05%, 87.08%, and 85.88%, for loads of 100%, 50%, and 20%.

The be quiet! Pure Power L8 700W is not modular, meaning that cables are built into the PSU itself and cannot be taken out and connected back in as necessary. This can result in difficult cable management and consequently a messy build and poor airflow.

The be quiet! Pure Power L8 700W is designed for low volumes, meaning that its constant drone while your PC is on would be less noticeable - ideal for those that prefer silent environments.