Soyo Raptor SYPS400 PSU

Soyo Raptor SYPS400 PSU - Page 1


Soyo Raptor SY-PS400 Adjustable PSU Review
Not Your Father's PSU

By: Jeff Bouton
January 6th, 2004

When someone is getting ready to build their new dream machine, the power supply is often overlooked. Generally people focus on the performance side of the equation, getting the fastest CPU, hard drive and Memory they can afford, along with a high quality motherboard to tie it all together. They may even go as far as to purchase a new case, with power supply included, but typically these power supplies are the cheapest available to keep the overall cost of the case down. A simple way to see this is to take an ordinary power supply and compare its weight to a high quality, after market model. Generally, the basic PSU is very light, with lighter duty components, while the higher end model will have more "guts" to ensure proper performance under extreme loads with a cleaner signal. This will result in added weight, which is often a sign of quality in Power Supplies.  So while the Power Supply is not as sexy as the other key components of a system, it should be regarded as equally important as the CPU, Memory or Hard Drive.  If there are any power issues, it can have an adverse affect on all of the system's components, causing instability or component failure.

Today we will take a look at the Soyo Raptor SY-PS400 Adjustable PSU.  This is a high-end power supply that offers a solid 400 watts of power and some advanced features not previously seen before.  Let's take a look.

Features of the Soyo Raptor SY-PS400 Adjustable PSU
Something Different

Form Factor

Front Panel

5 1/4" drive bay control panel with display 7-segment LED, over voltage indicator, and two front panel USB ports.
Alternate color face plate available.

Power Supply

Leakage Current: <0.75mA @ 250 VAC
Rise Time: 0.1mS~20mS
Hold Time: >17mS (max. load)
Short Protection: All outputs
Over Current Protection (OCP): <240VA
TTL/CMOS compatible on delay 100 to 500mS, off delap 1mS min.

Input Range: 90~135/180~265VAC (slide switch)
Frequency Range: 47~64Hz
Efficiency: >68% @ max. load, Norminal line

Health Monitoring Description
Operation Temperature: 10 degree C~50 degree C
Storage Temperature: -20 degree C~+60 degree C
Storage Altitude: Sea level to 50,000 ft
Operation & Storage Humidity: 10%~95% RH
Operating Altitude: 10,000 ft
MTBF: >100,000 hrs at max load, 115 VAC and 25 degree C ambient conditions

Dimension Description

6" x 3.3" x 5.5" (W x H x D)
FCC Part 15 Class B CISPER 22 Class B

The Soyo Raptor comes with the typical components found with most PSUs as well as a few other items that makes it stand out as a unique package.  Along with a main PSU unit, the Raptor comes with a 5 1/4" control unit that mounts in a standard drive bay.  An extra face plate is included to toggle the control box color from white to black.  The cabling of the main PSU unit includes two proprietary connections for the control unit, which supply information to the LED voltage indicators and allow the unit to adjust the voltage.  Additional cabling is provided to power the unit and connect the control unit's two USB ports to headers available on the motherboard.  We did find the USB cables to be a bit short, especially if the control unit is mounted on an upper drive bay.  Typically, a motherboard's USB headers favor the lower edge of the board and this wiring should have been designed with more length to give more flexibility to the control unit's placement.  A User's Guide is provided for the PSU, but is more of a technical guide than a user's manual and will prove to be unhelpful in guiding the novice on how to install the unit and connect the PSU to the control box properly.  Nonetheless, within a few moments of getting acquainted with the complete package, the user with some experience in building their own machines should figure it out quickly.

The main PSU body came equipped with a large 120mm fan which keeps the unit cool and draws heat away from the CPU, if mounted within proximity of the CPU socket area.  The speed of the fan is throttled by a thermal speed control, adjusting the rotation speed, as the unit's temperature rises and falls.  Overall, the unit was quiet, with occasional increases in audible fan noise, heard under load. The control unit comes configured to run at the default 3.35V and 5V settings.  The 3.35V output can be adjusted from run from 3.35V to 3.60V in .05V increments, while the 5V output can be adjusted from 5V to 5.5V in .10V increments.  This adjustability can be useful in a system that is under heavy load due to overclocking or an abundance of internal components.  If the system is drawn down due to excessive load, the dials can be adjusted to increase voltage output to compensate for the draw.  If the voltage is increased too high, an overload light will appear to let the user know that the voltage is running excessively high.


Basic Testing and Final Thoughts


Tags:  Raptor, PSU, S4, ps4, Tor, AP

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