details.

Naturally, as the makers of the world's best airflow to noise ratio fans, we had a duty to fulfill...to make the best low noise power supplies in the world! Our power supplies run quieter and offer stability thanks to some innovative technologies only SilenX incorporates.

Available in both standard ATX and SFX form factors and in a variety of power capacities, we got you covered no matter what you're running. Click on the links to the right to find out more details about the individual models.

the silenx advantage.

	Forward sweeping fan blade design increases static pressure compared to other silent fans and offers better airflow in areas where ventilation is restricted.
	Reduced motor size and conical shape allows for the largest blade surface area of any fan and improves aerodynamics compared to the cylindrical dead-spot of other silent fans.
	SilenX exclusive PowerPipeTM modular connector system available on certain models, allows for easy and clean installation of power connectors inside your system.

choosing the right power supply.

Use the following guide to choose the power supply that is right for you:

First and foremost, check which form factor your system uses. ATX is the standard PSU form factor for an overwhelming majority of the systems out there, and measures 140x150x86mm, which is approximately 5.5x5.9x3.4in. SFX power supplies are used on smaller and slimmer cases, such as those on HTPC systems and measure 120x125x63.5mm, or approximately 4.7x4.9x.2.5in.

Once you've determined the form factor, determine the wattage for your system requirements. Generally the higher the performance of your system, the more power you need. Figure around 250 watts for the highest end processors and motherboards as your base figure and about 100 watts for lower end systems.

For high end graphics cards, add about 80 watts, and about 40 watts for lower end models. Keep in mind if you're using SLi or CrossFire, double that figure!

Depending on the performance of your hard drives, add about 15 to 30 watts each. Higher RPM doesn't necessarily mean more power consumption, rather, it's the total inertial mass of the spindles, so if your hard drive has more spindles, those will naturally consume more power. 15K drives have smaller spindles than 7.2K drives and sometimes consume less power despite their incredibly high RPMs.

Optical drives can consume quite a bit of power when you're burning CDs or DVDs. Figure a good 30 watts per drive to give enough leeway.

Factor in another 30-50 watts for other peripheral devices, such as sound cards, TV tuners, USB devices and so forth.

As always, add a few more watts to take into account any future upgrades you might consider down the line, and make sure you have adequate ventilation in your system. Power supply fans are never designed to vent both the system and the power supply itself!