OCZ ModStream 520W PSU Review



A 500 watt power supply is not for running at 500 watts all the time… it’s for 400 watts normal usage with peaks of 500 supplying stable power. 520 watts may be overkill for some people, but most users keep their power supplies through several PC upgrade life cycles and should consider their PSU a long term investment. Unfortunately the unit is not perfect, but a few features would definately push it over the top. Since the unit boats a modular design, it would be nice to see the motherboard connectors as seperate cables, as not everyone has an ATX12 motherboard right now. Also, many modders would like to see a UV reactive window in different colors (like the X-connect). One last wish would be to include the adjustable rails and dual +12V rails present in OCZ’s popular PowerStream units. These additional features would definately land this unit a perfect score, as the quality is top notch.

Quality 10
Design/Looks 9
Value 9
Features 8
Performance 10
Innovation 9
Noise 9
Average 9

It is far less trouble to buy a quality power supply from the start than to troubleshoot system instability. The OCZ modstream delivers quality performance similar to much more expensive units (like PC Power & Cooling) for much less, and has the modular features that keep your system tidy. The unit is future ready and has killer looks. Summing up all the aspects of this product yield a 9 out of 10 rating and the OCmodshop seal of approval.

  • Stable power with strong voltages and little fluctuation
  • Looks good
  • EMI shielding
  • Virtually noiseless
  • Flexible connectivity
  • ATX12 compliant (native SATA, PCIe, and ATX12 motherboard connectors)
  • Excellent build quality
  • Modular design (use only what cables you need)
  • One of the best warranties in the business


  • No adjustable voltage regulation
  • Motherboard connectors not completely modular


Alan is a web architect, stand-up comedian, and your friendly neighborhood Grammar Nazi. You can stalk him on the Interwebs via Google+, Facebook and follow his ass on Twitter @ocmodshop.