Seasonic’s earlier Gold-certified PSU series used to be expensive and high-wattage (except for fanless models) and thus, despite their excellent specs, outside the scope of common users.
The new series, however, includes four PSU models that range in wattage from 360 to 650 watts and are priced very moderately, which makes them interesting not only for computer enthusiasts who own top-end gaming rigs but also for ordinary people who need a high-quality and efficient power source for their computer. The question is if Seasonic has managed to retain its traditional quality in these affordable PSUs.
We’ll check this out by testing two products: the junior 360W model (the only one in the series to have no modular cables) and the mainstream 550W model.
Although from the same series, these models differ more than just in modular design and output power. They are actually built on two different hardware platforms and even differ in size. So, let’s have a look at each one individually.
The following article offers a detailed description of our testing methodology and equipment and a brief explanation of what the specified and tested parameters of power supplies mean: X-bit Labs Presents: Power Supply Units Testing Methodology. If you feel overwhelmed with the numbers and terms this review abounds in, refer to the Methodology.
You can also go to our Cases/PSU section to check out reviews of all other PSU models we have tested in our labs.
We will mark the actual power consumption of three system configurations (discussed in our article PC Power Consumption: How Many Watts Do We Need?) in the cross-load diagrams. This will help you see if the tested PSU can meet the requirements of a real-life PC.