Seasonic PRIME 650W Platinum PSU Review

1. Introduction2. Bundle & Cabling3. External4. Internal5. Testing Methodology & Results6. Closing Thoughts7. View All Pages

The PRIME power supplies are very nicely finished. The paint work is deep and consistent and prove difficult to scratch. The Platinum range doesn't however have the additional shiny panel that rests around the PRIME logo in the center of the fan.

The large cooling fan is behind the grill above. We will take a closer look when we open the supply later in the review.

This side of the unit is home to the power socket, power switch and Hybrid fan switch.

This Hybrid mode allows the fan to be disabled completely when the unit drops to a specific temperature threshold. Seasonic claim the Hybrid Fanless mode works up to:

• Approximately 50 % (±5 %) of system load at 25 °C.
• Approximately 30 % (±5 %) of system load at 40 °C.

All the other supplies we have reviewed in the Platinum PRIME range have the same modular connector layout. This unit is different however as there are now 2 horizontal rows, and not 3.

The CPU/ PCI E connectors are in two rows of two on the left side of the connector bay. Peripheral connectors are in a single row of four top right, with the motherboard connectors in a row bottom right.

Seasonic PRIME 650W Platinum Power Supply
DC Output	+3.3V	+5V	+12V	-12V	+5Vsb
Max Output	20A	20A	54A	0.3A	2.5A
Total Power	100W		648W	3.6W	12.5W
	650 Watts

This 650W power supply can deliver 54A via the +12V rail. This is a drop from 70V from the previous 850 watt unit we reviewed last week.

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