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Seventeam Z-FORCE 700W Modular Power Supply Review
User Rating: / 1
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Written by Munk   
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http://t3.gstatic.com/images?q=tbn:JxCLLByDTrX_CM:http://www.selwynelectronics.co.uk/images/logos/seventeam_logo.jpgThe key to a solid systems foundation is in the quality of the power being distributed through it. There are a number of top level OEM companies like FSP and Top Power that pretty much build the majority of the power supplies on the market currently. Seventeam is new to the US market but their power supplies are not; some SilverStone PSU’s were actually manufactured by Seventeam. Seventeam has been around for a number of years but we are just starting to see them creep into the US market and with power supplies boast Japanese capacitors I am sure they will be warmly welcomed to the power hungry westerners. Let’s take a look at the Seventeam Z-FORCE 700W Modular Power Supply and see if it has what it takes for your next build:

 

Provided by: Seventeam

Price: TBA

Closer Look:

 

 

 

 

 

Specifications and Features:

ST-700PSD Feature
 

●    Conforms to ATX 12V V2.2 specification
●    Full range voltage: 90-264Vac
●    Active PFC (Power Factor Correction) > 0.99
●    High Standard compatibility: Support SLI VGA card
                                            Support Multi-Core CPU
●    Dual independent +12V rails, provide powerful output Voltage
●    High Efficiency >88%
●    135mm ultra silent fan delivers efficient air flow
●    Comb-shaped heat sink made from highly conductive metal:
       low drag delivers better heat dissipation.

●    Uses LLC Resonant Circuit), DC-DC and SR (Synchronous Rectifying) circuit construction
●    Solid Capacitors and 100% Japanese-made Capacitors for maximum reliability and stability
●    Protection:OCP、OVP、UVP、OPP、SCP


              

     

   

 
 

 

 
 
 
Spec.
 
 

Model No

ST-700PSD

Output Wattage

700W

PFC

Active PFC

Efficiency

85 % FULL LOADING

Noise Level

 

P. G. signal

100-500 ms

Hold-up Time

14ms at 25

Weight

2.2 KG

Color

Black

Fan

Single 135 mm DC Fan

Dimension

163mm (L) x 150mm(W) x 86mm(H)

Protection

OCPOVPUVPOPPShort Circuit Protection

 

INPUT

Input Voltage

90-264 VAC

Input Frequency

50 ~ 60 Hz

MTBF

100,000 hrs minimum (at 25 )

Input Current

10-5A 

 

OUTPUT

 

Voltage

+5V

+12V1

+12V2

-12V

+3.3V

+5Vsb

MIN

1

1

1

0.0

0.5

0.1

NOM

12.5

15

15

0.25

12.5

1.25

MAX

25

30

30

0.5

25

2.5

Units

AMPS

AMPS

AMPS

AMPS

AMPS

AMPS

               

 

                      Note1)  The maximum continuous total DC output power shall not exceed 700 Watts.

                                2) The maximum continuous combined load on +5V and +3.3V outputs shall not exceed 150 Watts

                                3) The maximum continuous combined load on +12V1 and +12V2 outputs shall not exceed 650W.
                   4) The maximum continuous combined load on +5V, +3.3V and +12V1, +12V2 outputs shall not exceed 685 Watts.

Environment

Operation Temperature

to 50

Storage Temperature

-40 to 70

Operation Humidity

20% to 85%, non-condensing

Storage Humidity

10% to 95%, non-condensing

 

 

Testing Rig:

Testing:

In order to test the power supply we will be putting it up against other PSU’s in its class. I will be running both a load and idle test on all the power supplies and recording the data. The comparison power supplies will be a Cooler Master GS 750W, Thermaltake 650W and a Coolmax USA ZP 750W.

 

Load Idle:

Voltages

Z- Force 700W

Thermaltake

ZP 750W Silent

CM 750W

 

Idle

Load

Idle

Load

Idle

Load

Idle

Load

+3.3

3.3

3.3

3.31

3.31

2.54

2.75

3.4

3.4

+5

5

5

4.95

4.95

5.05

5.05

5.1

5.1

+12

12.04

12.04

12.67

12.67

12.35

12.35

12.25

12.25

Conclusion:

 The overall performance from the Seventeam Z-FORCE 700W Modular Power Supply was very impressive. Usually you will see a fluctuation between load and idle voltages on power supplies of lesser quality. The Coolmax USA PSU’s were the cheapest PSU’s of the bunch and they showed their true nature when we looked at the 3.3 rail voltages. Although under voltage won’t destroy components overall performance will be affected especially when you need the extra boost for overclocking. Japanese capacitors make voltage regulation much cleaner and solid which in turn makes all your rails maintain rock solid voltages which means no loss of voltage during taxing OC sessions or gaming.

Would I recommend this product? Although I must say my personal choices for power supply companies are Thermaltake, CoolerMaster, and Mushkin; the people at Seventeam made me cave I am now running one of my test rigs with a Seventeam PSU and I couldn’t be happier. The Z-Force PSU is rock solid and very well designed if you are looking for something new in the North American PSU world, then you have to check out Seventeams impressive lineup.

Pros:

  • 80 Plus Silver Certified 
  • Japanese Capacitors
  • Rock Solid Voltages
  • 2 Dedicated 12v Rails
  • Silent
  • Great Design
  • Modular
Cons:
  • Could use More Molex Connectors


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