OCZ ModXStream 780W Power Supply
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Post-installation, the computer started up without any problems. Along with a blue LED that will light up any window-mounted case, the power supply includes what OCZ labels on the case as “noise killer technology,” a part of the effort by component manufacturers to keep PCs running as quietly as possible. I can state with pleasure that while the power supply’s 120mm fan isn’t completely silent, it’s certainly less obtrusive than the already minimal sound of the stock cooler sitting on top of my CPU. In other words, OCZ has itself a very quiet power supply. The reduced number of cables certainly makes for a cleaner case and I’ve noticed lower ambient case temperatures as well, which are both big pluses.

The ModXStream features an interior blue LED that lights up when the power supply is on.


Stress Testing
To test the power supply’s ability to provide power to components under stressful situations (like when running a game), I opened up the NVIDIA control panel and ran a full system stability test for 30 minutes. The test, which stresses the CPU, RAM, GPU, PCI-E bus and hard disk by running a 3D graphics loop, is pretty good analog of a gaming situation and also indirectly tests the stability of the power supply as it supplies power to the computer’s various components.

Another view of the modular ports. From left to right: three ATA ports, two SATA ports and one PCI-E port.


The specs of the testing rig:
  • Processor: Intel Core2 Duo e6400 Processor
  • Memory: 2 GB of Crucial DDR2 PC2-8500 Ballistix Tracer Dual Channel RAM
  • Video Card: XFX GeForce 8800 Ultra ExTreme
  • Motherboard: XFX XFX nForce 680i LT SLI Motherboard
  • Hard Drive: Hitachi Deskstar 7K1000 1 TB Hard Drive
  • Optical Drive: Pioneer DVD-115 DVD Drive
  • OS: Windows Vista
  • Testing Software: NVIDIA System Stability Test