OCZ ZX Series 850W Power Supply

Posted by on Monday, April 25, 2011 - 3:02pm

ocz zx 850The ZX series comes in three wattage levels beginning with our review sample's 850W, then jumping up to the 1000W and ending with the almighty 1250W. The entire series boast a single 12v rail with a minimum 70A, and enters the market as OCZ's top enthusiast model line. Geared at top end gamering and enthusiast systems, that are into multi-GPU rigs whether it’s SLI or Crossfire. Topping this bad boy off is that it is ultra quiet. Read on.

Introduction to the OCZ ZX Series 850W Power Supply

As of late we are seeing OCZ focus more on solid state storage devices. Rightfully so, as SSD drives are fast becoming popular as the prices rocket toward an affordable level. Besides memory, which are what most of us know OCZ for, they also produce their fair share of power supply models. Many of them under the reputable PC Power & Cooling label, but most are released under their own OCZ trademark. Today, we will be taking a look at a model from their newer the ZX line.

The ZX series comes in three wattage levels beginning with our review sample's 850W, then jumping up to the 1000W and ending with the almighty 1250W. The entire series boast a single 12v rail with a minimum 70A, and enters the market as OCZ's top enthusiast model line. Geared at top end gamering and enthusiast systems, that are into multi-GPU rigs whether it’s SLI or Crossfire. Topping this bad boy off is that it is ultra quiet. Read on.

OCZ’s take on the ZX Series

The ZX Series is the unsurpassed solution for driving today's Enthusiast and gaming systems. It has the ability to easily power both NVIDIA® SLI™ and ATI CrossFire™ modes, supporting even the most power hungry GPUs with multiple GPU configurations. Industrial-grade yet designed with enthusiasts, gamers and modders in mind, this PSU is stable, robust, and sports a sleek look and the most compact form factor of its class.

Kept ultra-cool with a load-controlled ultra quiet 140mm fan, the ZX Series was engineered to be the quietest PSU available and eliminate distracting noises from your PC. Highly efficient, featuring up to 92% efficiency at typical load and up to 89% at full load, this leading-edge power supply remains rock solid and powerful while retaining superior efficiency under load. The OCZ ZX Series provides universal Input and Active PFC (Power Factor Correction) to effectively regulate input voltage across worldwide power grids and maintain an economical, stable supply of power.

Backed with OCZ’s 5-year “power swap” warranty, the OCZ ZX Series PSU gives you the ultimate power and peace of mind to ensure the stability, low noise, optimized air flow, and efficiency of your gaming system.


Specifications

  • 850W Continuous power
  • Ultra quiet 140mm ball-bearing fan
  • +12VDC @ 70A Single Rail Design
  • SLI™ and CrossFire™ support
  • Fully modular cable management system
  • 150 x 175 x 86mm (W x L x H)
  • ATX12V v2.2 and EPS12V
  • 80-Plus Gold Certified
  • 92% Efficiency (Typical Load)
  • Overvoltage/Overcurrent/Short-Circuit protection
  • Active PFC
  • MTBF: 100,000 hours
  • 5 year warranty backed by OCZ's exclusive
    PowerSwap Warranty replacement program.

Closer look

All the models of the ZX line sport the same matte black paint job with gold highlights. Not flashy at all but the gold does stand out in a crowd.

To start off the tour we begin with the ultra quiet 140mm cooling fan. OCZ wanted this model to be high-end, but not sound like an aircraft taking off in the process. The huge fan is controlled via PWM, meaning onboard heat and load sensors determine how fast the fan will actually spin. The fan is also black and has seven blades, sitting underneath the grill that is screwed to the top panel.

Applied to the top of the unit is the specification sticker, which to be honest OCZ could have done a better job on in terms of appearance. A low profile metal plate or a gold and black sticker would have looked much better. But honestly one can't really do without this information on the PSU, so we take what we can get.

The rear of the unit is nothing special or anything we haven’t seen before. The typical honeycomb venting and power plug/switch resides in the lower left location. As subtle as it looks the rear of the PSU does offer some functionality as it increases the air flow of the unit.

The ZX is a fully modular unit meaning every single cable is detachable, including the main and AUX power cables in this case. Looking at the front of the unit we see a total of four 8-pin PCIe connections. Unlike many of the other 850 watt units out there this model can handle some very high-powered GPUs. The ZX also comes with seven cables for Molex and SATA connectors, but only five can be connected at any one time.

Cables

20/4 Pin ATX

4 Pin AUX

4+4 Pin AUX

4 Pin Molex

SATA

Floppy

6 Pin PCIe

6+2 Pin PCIe

OCZ ZX Series 850W

1

0

1

9

12

1

0

4


Test Hardware:
Motherboard: ASUS P8P67 Deluxe
Processor: Intel Core i5 2500K
Ram: Patriot Sector 5 1333 4GB (2x2GB) Dual Channel (9-9-9-24)
Video Card: Gigabyte GTX 550 Ti
HDD: Hitachi 1TB
Power: OCZ ZX 850W
Case: Open air
Cooling: Thermaltake Jing CPU

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 multi-meter. 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

At the 850W level the new OCZ ZX power supply will give you all the juice and stability you could want in a power supply. With 70A on that single 12V rail the ZX has plenty of available current to handle most multi-GPU gaming rigs. And in order to provide power to those video cards there are a total of four 6+2 pin PCIe power connectors, which could be a rarity with an 850 watt PSU.

Besides the power rating and support for a lot of video cards, the two other aspects of the power supply that users will love is the fact that it has been awards the 80PLUS Gold rating for efficiency. We found the unit to be extremely quiet for such a high-powered PSU. So not only will you be able to save a good chunk of change while gaming it up at high resolutions, but you won't have to worry about hearing the power supply trying too cool itself in the process

The OCZ ZX850W retails for about $170 at most online retailers making for a pretty decent value.

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