OCZ ZS 650W Power Supply

OCZ ZS650The ZS series of power supplies from OCZ were just released this year. The series comes in three different wattage ratings of 550W, 650W and 750W. Today, we will be taking a closer look at the 650 watt model. The ZS 650 is a single 12 volt rail model that boasts an 85% efficiency rating. Lets see how well it stacks up against the other heavy hitters that have come across the test bench.

Test Hardware:
Motherboard: ASUS P8P67 Deluxe
Processor: Intel Core i5 2500K @ 4.5GHz @ 1.35v
Ram: Patriot Sector 5 1333 8GB (2x4GB) Dual Channel (9-9-9-24)
Video Card: Dual Radeon HD 5870
HDD: Hitachi 1TB
Power: OCZ ZS650W
Case: Open air
Cooling: Thermaltake FrioOCK


We know that testing a power supply on a loaded system is not the very best way to do so, but you can not overlook real world testing. Other sites have methods that use thousands of dollars in equipment to provide them greater detail. We have a trusty digital multimeter. Those sites and the methods they use should be the true means of determining how good a power supply really is; however, we feel that showing you how it performs under real world conditions is also a valid measure of its performance.

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