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POWER SUPPLY UNITS

2theMax GPX750 PSU Review
By: Rich Smith
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  • Rating: 5 stars5 stars5 stars5 stars5 stars / 10
    2006-10-11

    Table of Contents:
  • 2theMax GPX750 PSU Review
  • Features and Specifications
  • Where's the beef?!
  • Wires and Inside the PSU
  • Testing and Conclusion

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    2theMax GPX750 PSU Review - Testing and Conclusion


    (Page 5 of 5 )

    No review of a PSU would be complete without testing the unit.  Here are the specs for my test rig:

    • AMD Athlon 64 3700+
    • Patriot Dual Channel 2GB DDR500
    • Biostar NF4ST-A9 Mainboard
    • Sapphire X800 PCIe Video
    • 3x Maxtor 7400rpm 120GB IDE HD
    • Pioneer Dual Layer DVD+RW/-RW

    And here is how I simulated idle and load conditions for my tests:

    For idle conditions:

    • Booted and running Windows XP Pro
    • Sitting idle at desktop

    For load conditions:

    • Booted and running Windows XP Pro
    • Zipping files from DVD onto HD
    • Zipping files between two HDs
    • Listening to MP3s with Winamp
    • Playing Unreal Tournament

    I used my digital multimeter to take measurements for each rail at idle and load conditions. Here's What I found:

     

    +5V

    +12V1

    +12V2

    +12V3

    +12V4

    +3.3V

    Spec

    5V

    12V

    12V

    12V

    12V

    3.3V

    Idle

    4.98V

    11.93V

    11.95V

    11.95V

    11.96V

    3.4V

    Load

    4.91V

    11.87V

    11.91V

    11.92V

    11.88V

    3.3V

    As you can see, the voltage dropped a small amount while under load. While these numbers are still high enough to run your system, the power fluctuation may be too much for your tastes. I've seen better, but I've also seen much worse.

    As far as silence, how quiet can this PSU really be with a fan so big? Yes, it kept the PSU nice and cool, but I consistently heard a loud hum the whole time the thing was running. A little light music canceled this out, of course.

    Also, I was unable to find pricing for this unit here in the US, so I don't know how this PSU competes in terms of pricing.

    So, as always, here are my pros and cons for this item:

    PROS:

    • 750W - nice power
    • 4 separate 12v rails
    • Modular PSU
    • Serious cooling ability
    • Well constructed
    • Will meet most power needs

    CONS:

    • A little noisy (big fan)
    • Power fluctuations may deter picky users

    Based on the above, as well as my testing, I give this PSU a rating of 8 out of 10, and Dev Hardware's Recommended Product Award. This PSU delivers strong power and stays extremely cool. Had the power stuck a little closer to spec, and the fan been a little quieter (did you see the SIZE of that fan?!), it definitely would have earned a higher rating.

    I'd like to thank 2theMax for sending us their GPX750 PSU for review.  If you have any questions about this PSU, or any of 2theMax's other products, visit their website at http://www.2themax.com/english/2tm_eng_indexpage.html.


    DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.
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