Power Supply Roundup: 730W to 900W

Seasonic X900 - 900W

What a beauty Seasonic has here! Unfortunately, it's not even available in the United States. As we stated before, the US market doesn't need to be too sad since we will see the same power supply under a different name. Still, it's funny to see a little sticker showing 200-240VAC on the back suggesting this power supply should only be used in Europe. We have tested this unit on 90VAC and 120VAC without problems, so you can ignore the misleading sticker. Of course, Seasonic probably has reasons for these actions.

Four times 18A for the 12V rails is good. With a combined power of 72A, the 12V rails can almost reach the rated 900W on their own.

Cables and Connectors

This power supply also has the cables sleeved with black mesh. The cables are quite short, which is surprising for a high-end unit that will likely be used in a bigger case. Apparently, Seasonic feels differently, and they have attached many harnesses with lengths of 25cm to 65cm. The amount of connectors is good and the lengths will work well in smaller cases; then again, smaller cases probably don't need this many connectors.

Opening the unit, we find a unique and sleek design which is made for cooling by a single 80mm fan. The heatsinks are T-shaped and only allow for horizontal airflow. Comparing this unit to the nice 750W red one from before, there are several added components that help it reach the higher performance rating. Again, we see a high-quality Nippon Chemi-Con cap in the primary. The temperature of the heatsinks is been also very good, but this is due largely to a very annoying fan.