Review Index:

Ultra X3 1,000W EE Modular Power Supply Review

Manufacturer: Ultra Products

Introduction and Features

Ultra Products has a well-earned reputation with PC enthusiasts for providing a full range of aftermarket components and accessories.  Ultra continues to expand their PC power supply line and we have their new X3 1,000W power supply in for review.  The Ultra X3 combines features from both the high-efficiency X-Pro EE 600W and the workstation/server class X-Finity 800W power supplies that we reviewed earlier this year.   The X3 features 1kW output capacity, Active PFC, high efficiency, quiet operation, and it is backed by Ultra's Lifetime Warranty.  <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />



Ultra X3 1,000W Energy Efficient Modular Power Supply — <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Main Features


  • 1,000 Watts maximum combined output

  • Meets ATX 12V v2.2 and ATX v2.2 specifications

  • Single, high-capacity +12V output (up to 70A, 840W)

  • Quiet 135mm, variable speed cooling fan

  • High efficiency operation (85% at typical load)

  • Black-chrome finished enclosure

  • Modular FlexForce cables

  • (4) 6-pin PCI-E and (2) 8-pin PCI-E cable/connectors

  • Active PFC with universal AC input

  • Lifetime warranty (with registration)

The Ultra X3 comes securely packed inside a big red box along with a large assortment of modular FlexForce cables, a heavy duty power cord, mounting screws, and a printed User's Manual. 





Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective's power supply test bench can place a precise 2,000 watt DC load on the PSU under test.  Each power supply is tested under controlled, real-world conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage.  Our current suite of tests includes:


  • DC Load Regulation

  • DC Line Regulation

  • DC Cross-load (unbalanced load)

  • AC Ripple and Noise

  • Power Factor

  • Efficiency

  • Differential Temperature

  • Noise

  • Size and Weight


The Ultra X3 1,000W power supply was evaluated on both features and performance.  A full range of equipment was used to test the power supply under controlled load conditions. 


  • (2) CSI3710A Programmable DC load (+3.3V and +5V ouputs)

  • (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)

  • FLUKE 87-III True RMS digital multimeter (Accuracy ±0.05%)

  • Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)

  • Hitachi V-650F 60 MHz dual trace oscilloscope (Accuracy ±3%)

  • Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC

  • FLUKE  52-II digital thermometer (Accuracy ±0.3ºC/0.5ºF)

  • Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)

  • AccuLab V1-10kg digital balance (Accuracy ±1g)

  • Custom Lian Li PC60 enclosure to simulate real-world operating conditions




Video News

No comments posted yet.

Post new comment

The content of this field is kept private and will not be shown publicly.
  • Lines and paragraphs break automatically.
  • Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <blockquote><p><br>
  • Web page addresses and e-mail addresses turn into links automatically.

More information about formatting options

This question is for testing whether you are a human visitor and to prevent automated spam submissions.