Seasonic X900 SS-900HP 900w PSU



To put it simply, the Seasonic X900 is a wolf in sheep's clothing. Managing to keep the size of the X900 to not much bigger than your average ATX PSU, Seasonic have ensured that the X900 will work in a wide range of PC enclosures from spacious towers down to compact lanboxes.

This combined with the extremely impressive efficiency figures of almost 85% and minimal voltage fluctuation across each of the X900's rails shows Seasonic's dedication to not only manufacturing power supply's with excellent performance, but consideration for the environment and of course your energy bills too!

Currently priced at just under £130 over at Aqua-PC's and Scan, the X900 is at an amazingly good price point that can currently only be matched by lower wattage units from other manufacturers.

AquaPC's Recommended Retailer

The Good
• Very good voltage stability on all rails.
• Extremely high efficiency of almost 85% reported by our equipment.
• Dimensions not much larger than a standard ATX PSU.
• Very competitive pricing for a 900w unit.
• Silent up to and beyond 50% load.
• 4x PCI-E cables and support for the latest 8-Pin PCI-E standard.

The Mediocre
• 80mm fan gets a tad noisy at 100% load.

The Bad
• Nothing to report.

In recognition of these excellent qualities I need to congratulate Seasonic for managing to obtain Overclock3D's "Best In Class" award. This award signifies that the Seasonic X900 900w PSU is considered by Overclock3D to be the best all-round power supply in the 900w and above classification for the month of September, 2007.

Best In Class Award
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Most Recent Comments

26-09-2007, 12:25:32

Quality review as always mate, and what an excellent performer. I'll have the stability and efficiency over other blingy high-powered units any day. Keep up the good work Quote

26-09-2007, 12:25:34

Mr. Smith
Almost 85% efficiency is very impressive.

Shame about the noisy fan, had they placed 2 fans in the unit - one intake, one exhaust - then the fans would not have had to reach full throttle like a single one does...

Quality PSU.Quote

26-09-2007, 12:30:25

Agreed, but you look at the load required (776w) to get it to be audible. Many probably wouldn't even get it to break a sweat.Quote

26-09-2007, 12:36:13

Mr. Smith

I did overlook that rather important detail... Probably why pcp&p is silent - never breaks a sweat, not even benching!

This seems like another PSU for life Quote

26-09-2007, 12:53:21

Yeah it's a very good PSU for sure. As you've pointed out, its unlikely most people will ever hear this unit at full throttle, because it needs some serious load for that to happen.

Of course, if you was hell bent on making it total silent, you could always swap out the fan with a SilenX or something. Not that I'd advise anyone to fiddle inside a PSU Quote

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