OCZ ZS 650W Power Supply

Posted by on Wednesday, August 24, 2011 - 8:00am

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.

Introduction to the OCZ ZS 650W Power Supply

The 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.

OCZ’s take on the ZS Series Power Supplies

The OCZ ZS Series PSU is an affordable solution for driving today's value-oriented gaming systems, and can power both NVIDIA® SLI™ and ATI CrossFireX™ modes with an array of connectors. With the ideal combination of stability and sleek design, ZS is designed with gamers and modders in mind, sporting a compact form factor for compatibility with a range of case designs.

Available in 550W to 750W configuration and backed with OCZ’s 3-year Power Swap warranty, the ZS Series PSU gives you peace of mind to ensure stability, low noise, and efficiency of your home gaming system.


Specifications

  • 550W, 650W, and 750W Configurations
  • Single +12V Rail
  • Continuous output rated at 40°C
  • 150 x 160 x 86mm (W x L x H)
  • ATX12V v2.2 and EPS12V
  • Non-Modular
  • High Efficiency: 85% at typical load, meets 80+ Bronze standards
  • Overvoltage/Overcurrent/Short-Circuit protection
  • Active PFC
  • MTBF:100,000 hours
  • 135mm temperature and load controlled double ball-bearing fan
  • 3 year warranty backed by OCZ's exclusive
    PowerSwap Warranty replacement program.

Closer look

The ZS 650W is a non modular power supply. The unit has a nice semi-flat finish, with your typical black color. The combination of blue and gray that line the sides of the unit adds a nice cosmetic touch to it. I would say the ZS would look good in an all black case with an ASUS blue and gray motherboard. Just a thought for those that like to have things match inside the case.

The sticker on the ZS graces both sides of the unit. No matter how the unit is mounted, the top of the case or the bottom, the sticker faces upward and readable. The sticker states the series name and the wattage of the unit.

In order to keep heat in control, OCZ deployed a 135mm cooling fan that is load and temperature controlled. The fan is an eleven blade model and if you are looking for something quiet, this model is not extreme-quiet but well within a tolerable level. In a gaming machine though, you will hear other components over this power supply.

The specification sticker is attached to the top of the power supply. The numbers are pretty respectable especially the single 12v rail which has a total of 46A. Combined with the wattage, the ZS650W should be enough power to push a dual-GPU system with moderate gaming cards. [Editor's Note: While I agree, it's worth pointing out that the ZS 650W and 550W models only come with a single 6pin and 6+2pin PCIe power. So if you do want to run with a second card you will have to settle for two Molex to PCIe adapters, but if you are buying a new PSU it's best to just get one that suits your needs from the get go. Something to keep in mind.] 

Cable Connections

20/4 Pin ATX

4+4 Pin AUX

4 Pin Molex

SATA

6 Pin PCIe

6+2 Pin PCIe

   

OCZ ZS650W

1

1

4

8

1

1

   
  • 1 x 20+4-pin ATX
  • 1 x 4+4-pin ESP/12V CPU
  • 1 x 6-pin PCI-E
  • 1 x 6+2-pin PCI-E
  • 4 x 4-pin Peripheral
  • 8 x 5-pin SATA

 


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

Results

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.


Conclusion

We found the OCZ ZS650 to be more than an adequate power supply. At 650 watts and providing 46 amps on the single 12v rail, it should be enough to power a very high end GPU or a couple of less powerful cards. Power and OCZ’s reliability is one thing but we have to take in account looks as well. It has to have enough connections for your needs, but is also nice to have a good looking power supply to go along with a new build. Take a look at any forum that has a thread on PC build or galleries, almost every system’s PSU match the motherboard as well as the rest of the build. The ZS series will be a good match for systems that uses a color scheme similar to an ASUS mid-range P67/Z68 lineup, with ASRock boards being a fairly good match as well. OCZ does a good job of putting together a well built, solid performing power supply. And to top it off, its backed by a three year warranty.

Newegg has the ZS650 currently priced at $89.99 not including the 10% off promo code.

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