In terms of thermal performance, for a budget cooler it's great, and at maximum fan speed it runs relatively quiet at 48dBA. In both our maximum fan speed and 40dBA tests, the Pure Loop LX is right up there with some of the best 360mm AIOs that we have tested. In terms of price vs. performance, it's excellent value for money.
KitGuru has published a review of the be quiet! Pure Loop 3 LX 360mm AIO cooler. The cooler offers unique CPU block customisation with ten interchangeable foil designs, great thermal performance, low noise levels, and easy installation with standard wiring. Despite basic RGB and a shorter warranty, it provides excellent value for money and competes well with other budget 360mm AIOs. Overall, it is a great option for high-end CPU cooling on a budget.