Power

SilenX 14 dBA 400W PSU

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With a name like SilenX you'd figure has to be quiet, right? Quiet as in like a tomb? How about like the quietest 80mm fan I've ever heard -- that still moves air? Or the most massive heatsinks seen on a fan-cooled 400W PSU with full Active PFC and universal AC input voltage? SPCR Forum members discovered the SilenX PSU, and now we share it with the world in a thorough review.

Fanless Power Supply: Marko's Homebrew

Do-It-Yourself Systems | Power
It was a bit of a tossup whether Marko's great project piece should go in the System section or the PSU section; in the end, we decided to put it in both. He first wrote about it as Quix in the SPCR forums, but now you can get the whole 9 yards in Marko's article about a DIY Fanless PSU PC.

Verax 300W PSU

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Verax, a German company whose main claim to fame is its unique fan, offers the F300PPFC-80KP, yet another modded Fortron PSU in the tradition of Q-Technology, Zalman, PC Power & Cooling and Nexus. Does its special fan make this PSU truly special? Find out in another comprehensive SPCR PSU review -- now with Power Factor measurements.

Antec True380S (Sonata) PSU

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Antec, the biggest case & PSU brand in the US, moves towards quiet computing with the new Sonata case and True 380S power supply. Piano black finish, noise-reduced PSU, 120mm case fan, unique case flow, grommets for HDD mounting -- how do they all add up? A 2-for-1 review: Antec Sonata Case / PSU and Antec True 380S PSU ...

Review: HighPower HPC-300-102 PSU

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This non-descript PSU from High Power (Sirtec) was apparently ranked #2 for low noise in a roundup of 18 competitors by CT Magazine in Germany earlier this year. How does the HPC-300-102 fare on the SPCR test bench?

Antec TrueControl 550 PSU

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The as-yet unreleased Antec TrueControl 550 is a perfect PSU for overclockers obsessed with control and a need for very high power. It has every control tool you can think of and the ability to deliver huge amounts of tightly voltage-regulated power. Is it a good choice for the quiet computing enthusiast? Read our comprehensive review.

Nexus NX-3000 PSU

Power
From the people who brought you Q-Technology comes a new PSU called the Nexus NX-3000. The new model is claimed to be 5(!!) dBA quieter than the quietest fan-equipped ATX/PS2 power supplies. Yet with high efficiency and fan intelligence, it is supposed to stay cool with good airflow under high loads. We agree. It's the quietest fan-cooled PSU we've encountered to date, and it delivers power with aplomb.

Vantec's "Stealth" 420W Power Supply

Power
Heatsink maker Vantec branched out with their new line of high power "Stealth" power supplies recently. We put their 420W model, the VAN-420A, through its paces with all 3 of its fan blazing. An unfortunate accident with our new PSU Load Tester addition to our test bench blew up one sample but did not set any blazes. Read the Vantec 420A PSU review here.

Q-Technology QT-02300 Power Supply

Power
Long considered the quietest PSU on the market, Q-Technology has now discontinued their original 230W model and offers 250, 300, 400 and 460W models. We examine one of their 300W models. Does it continue the Q-Technology tradition? How does it compare with quiet PSU models from other manufacturers?

Zalman ZM300A-APF PSU

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A new PSU from Zalman, now with Active PFC, wire fan grill, bigger heatsinks, higher efficiency and lower noise, all at the same price as the old PSU. We put the ZM300A-APF through its paces on the test bench and it emerges smelling like roses.

Seasonic SS-300FS Active PFC PSU

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This well-established company enters the North American market with a line of quality power supply units that boasts an intelligent fan controller they call S2FC. Our review of Seasonic's 300W ATX model. It's pretty quiet. :)

A $5 DIY Power Meter

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Consumer electricity monitors work fine to measure power consumption, but they cost upwards of US$100. It's also more than we need. Our electronics advisor Tommy Yee suggested building one really cheaply. With our shoestring budget, that sounded much better. My super simple power meter took half an hour and $5 of parts. A very useful tool.

Fanless (or Not) with TKPower 300 & VIA C3

Do-It-Yourself Systems | Power
Partly a review of the TK Power 300 power supply and partly a DIY quiet computer project, John Coyle's quiet computer project utilizes many components and techniques discussed in Silent PC Review: the above-mentioned PSU, VIA C3 processor, quiet Seagate Barracuda IV hard drive, Zalman fan mounts, Panaflo 80mm fans, variable fan speed contro, drive decoupling by suspension, etc. A worthy first article!

Run a Power Supply without a Fan?

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This is a question often asked but rarely answered. In this exploratory article, we present temperatures of an Enermax PSU's heatsink with and without fan, under a defined and measured load, in different positions. Following where the questions lead brings us to some surprising answers!

Quieting the Enermax & other thermistor fan PSUs

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The Enermax EG-365P-VE is a popular example of a thermistor-controlled, dual fan PSU. Despite the promise of whisper, its performance in the noise arena is ordinary, and it usually becomes one of the 3 core noise sources in a typical PC. This hands-on article shows how to reduce its noise output so that it is just a whisper, barely audible from even just a couple of feet away. The basic methodology can likely be applied to any PSU with a thermistor-controlled fan that is too noisy. But be careful of high voltages!
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