In the absence of high end load testing equipment, HTL will conduct a real world test and load the power supply using components that can often be found in a recent gaming system and try to produce a ~80-100% load when under OCCT. Some components might be overclocked to achieve a ~80-100% load. All components are tested inside a case and room temperature was kept at 25C for the duration of the tests. The +12V, +5V and +3.3V will be measured using a digital multimeter and the total system load will be measured in Watts using a digital power meter. For additional heavy gaming system loading scenarios, 3DMark 11 will also be used as a benchmark.

Test System:

System Specifications

  • Processor: Intel Core i7-3930K @ 4.6GHz
  • Motherboard: MSI X79-GD65(8D)
  • CPU Heatsink: Phanteks PH-TC14PE
  • Heatsink Paste: Noctua NT-H1
  • Memory: 4x4GB G.Skill Ares 2133MHz DDR3
  • Video Cards: NVIDIA GTX 590, ASUS GTX 670 DirectCU II
  • Hard Drive: Seagate Barracuda 500GB
  • Power Supply: LEPA G1000
  • Optical Drive: LG Blu-Ray
  • Case: NZXT Switch 810
  • Operating System: Windows 7 Professional 64-bit



  • OCCT x 30 Minutes
  • 3DMark 11
  • Readings taken with motherboard sensors and a digital multimeter