OCZ ZS Series 650 W 3

OCZ ZS Series 650 W

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OCZ ZS 650W Features & Specs
Max. DC Output650W
Efficiency80 Plus Bronze
Operating temperature10°C - 40°C
ProtectionsOver Voltage Protection
Under Voltage Protection
Over Current Protection
Short Circuit Protection
Cooling 135 mm load controlled double ball-bearing Fan
Dimensions150 mm (W) x 86 mm (H) x 160 mm (D)
Weight2.0 kg
ComplianceATX12V v2.2, EPS 2.91
Warranty3 years
Price at time of review$89.99

The PSU's continuous output power is rated only up to 40°C so we will have to test it at lower than 50°C to avoid dramatic situations, since Over Temperature Protection (OTP) is absent. The warranty is three years, a decent period for a PSU of this price tag, however Corsair in the similar priced TX 650 V2 offers five years. The price is a little higher than we expected and renders the unit more expensive even compared to the aforementioned Corsair TX 650 V2 which uses a newer platform. At the time of the review there was a very good deal for the ZS 650W with a $25 mail in rebate which lowers the price to $64.99. A very good deal for an 650W branded PSU, but as you already know, mail-in rebates are not permanently active so we have to judge the unit according to its official price.

OCZ ZS 650W Power Specs
Max. Power22A22A46A3A0.3A
Total Max. Power650W

There is only one +12V rail which can deliver about 100W less than the unit's max capacity, something highly expected since the PSU does not utilize DC-DC converters for the minor rails generation.

Cables & Connectors, Power Distribution

Native Cables
ATX connector (500 mm)20+4 pin
4+4 pin EPS12V (665 mm)1
6+2 pin PCIe (600 mm)1
6 pin PCIe (600 mm)1
4 pin Molex (610 mm+85 mm+85 mm+85 mm)4
SATA (390 mm+85 mm+85 mm+85 mm)4
SATA (720 mm+85 mm+85 mm+85 mm)4

All cables are quite long, except for the 24 pin ATX cable. There two PCIe connectors and strangely only one of them is 6+2 pin. Normally both should have 6+2 pins and not only one of them. Also as you can see from the table above, the PSU isn't equipped with FDD connectors, neither peripheral to FDD adaptors. Either way this isn't a big loss since nowadays floppy disk drives have disappeared. What troubled us the most regarding the cabling design of ZS 650W is the very short distance among SATA and peripheral connectors, which is way shorter than the recommended by ATX spec length (150 mm). Also OCZ did not bother to sleeve the wires between SATA and peripheral connectors.
All connectors use 18 AWG wires, which is the recommended by ATX gauge.

Since this PSU features a single +12V rail we do not have anything to comment about its power distribution.
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