OCZ StealthXStream2 600W review

OCZ bless us with 600 watts of 80Plus certified power and a noise-free voltage power supply

TODO alt text


  • Should be compatible with most standard PC cases
  • Matches the manufacturers' performance figures
  • Excellent standby efficiency
  • Very low voltage noise at 75% loads


  • Only comes with 13 connectors
  • Non-modular design

The OCZ StealthXStream2 600W is aimed at those of us with mainstream systems and modest gaming needs, but that still desire a quality power supply. It'll happily delivers power to multiple system components that include PCI-E graphics cards and SATA devices from four 12 volt rails as standard.

Under loading total efficiency for the OCZ StealthXStream2 600W put it second out of seven similarly classed power supplies, only losing out to the Antec TruePower 550W by the narrowest of margins.

However, it beat all competitors in the standby efficiency stakes, finishing an impressive first in its class.

Despite its 120mm fan, this PSU came in at the mid-range mark on decibel noise, when compared to similar power supplies like the Spire Blackmoon 650W at the louder end and the Xigmatek NRP 600W on the quieter side.

The fan – aided by additional air outlets on the supply – vented heat well, helping to keep the PC cooler on the inside than at the exhaust, and the PSU cables did not significantly heat up during the highest load tests.

In specific tests, the OCZ StealthXStream2 600W successfully met 100 per cent of the manufacturer's claimed performance figures, based on real-world scenarios for its 12 volt rails.

The tested rails were also all within the ATX specified tolerances and happily conformed to the standard. The OCZ StealthXStream2 600W produced an almost flat line on voltage noise at a 75 per cent load test, making it virtually jitter free, helping to provide a low level of electrical interference.

OCZ stealthxstream2

We found the build quality of the OCZ StealthXStream2 600W to be pleasingly generally robust, despite its uninspiring black casing and an internal black fan. It has bog-standard dimensions of 140 x 86 x 150mm, while the weight of the OCZ Stealth XStream2 600W is just 1.863kg. The manufacturers' stated AC power input is 100-240 V 9.5-4.5A 50-60Hz.

The OCZ Stealth XStream2 600W ships with 13 well selected output connectors; 1x ATX 20/24-pin connector, 1x CPU 4+4-pin connector, 1x PCI Express 6/8-pin connector, 1x PCI Express 6-pin connector, 3x SATA connectors, 5x 4-pin peripheral (MOLEX) connectors, and 1x floppy connector.

For a low-end power supply, the power performance was excellent. It could do with improvements to its noise levels, and an extra PCIe connector would definitely please us.

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Tech Specs

Product TypeATX12V & EPS12V Power Supply
Number of +12V Rails4
Product FamilyStealthXStream 2
Brand NameOCZ Storage Solutions
Form FactorInternal
Input Voltage110 V AC, 220 V AC
Output Power600 W
Output Voltage3.3 V DC, 5 V DC, 12 V DC, -12 V DC, 3.3 V DC @ 25 A, 5 V DC @ 25 A, 12 V DC @ 18 A, -12 V DC @ 800 mA, 5 V DC @ 3 A
Number of Fans1
Green CompliantYes
Green Compliance Certificate/Authority80 Plus
Height86 mm
Width150 mm
Depth140 mm
ManufacturerOCZ Storage Solutions, Inc.
Product ModelOCZ600SXS2-UN
Product NameStealthXStream 2 OCZ600SXS2-UN ATX12V & EPS12V Power Supply
Product LineStealthXStream 2
Manufacturer Part NumberOCZ600SXS2-UN
Manufacturer Website Addresshttp://www.ocztechnology.com
Marketing Information

StealthXStream 2 / 400W-600W / 80+ Certified / Standard ATX

StealthXStream 2 Series offers an excellent value for performance to accompany home, gaming, or enthusiast systems. The StealthXStream 2 is kept supremely cool with a large 120mm ball-bearing fan and features a standard ATX power supply form factor resulting in a compact footprint to accommodate virtually all computer towers. Offering excellent energy and cost savings, the series features high efficiency on all models with 80+ certifications, converting up to a full 85% of AC to DC power at typical loads.

The OCZ StealthXStream 2 provides Universal Input and Active PFC (Power Factor Correction) to effectively regulate input voltage across worldwide power grids and maintain an economical, yet stable supply of power. OCZ StealthXStream 2 power supplies come backed with an industry-leading three year OCZ PowerSwap Warranty for the ultimate peace of mind.

Limited Warranty3 Year