Seasonic X-Series 660W Power Supply Review

1. Introduction2. Seasonic X-Series 660W (Bundle & Cables)3. Seasonic X-Series 660W (External)4. Seasonic X-Series 660W (Internal)5. Seasonic X-Series 660W (Super High Res Gallery)6. Testing Methodology and Results7. Closing Thoughts8. View All Pages

The Seasonic X Series 660W power supply ships with a paper wrap around it explaining that the fan will be inactive at less than 20% load.

The unit itself is very attractive, nicely finished, yet understated to suit a variety of windows case systems. The paintwork is deep and will withstand rough handling over time.

The 120mm fan is hidden behind a black grill without Seasonic labeling visible.

One side of the power supply is fully vented to improve air flow. At the side is a power switch and connector.

The X-Series 660W has several rows of connectors available for the modular cabling. These are all labeled for ease of installation. There is a ‘Temperature Activated Fan – Rotates only when required' sticker bottom right.

Seasonic X-Series 660W Power Supply
DC Output	+3.3V	+5V	+12V	-12V	+5Vsb
Max Output	25A	25A	54A	0.5A	3A
Total Power	125W		648W	6W	15W
	660W

54A can be delivered to the +12V rail, adequate power on tap for demanding gaming systems.

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