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Silverstone SST-ST75ZF 750W Power Supply Review

While Intel and AMD and frantically working to keep power usage down of their recent and upcoming CPUs, we see video card taking the top power gobbling spot, two high end ATI X1900 cards in Crossfire will bring most modest power supplies to their knees. You need a sufficiently powerful unit if you plan to overclock your system, this Silverstone 750W PSU is silent and powerful, but is it enough? Let?s find out

Author	piotke
Editor	jmke
Date	2006-07-17
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Seven hundred and fifty watts, that?s the total amount of power this unit can deliver, Silverstone has partnered with Etasis to bring a silent, powerful and affordable PSU to the masses. But I hear you say: with Intel releasing Core 2 and Pentium D ?power guzzlers? leaving the scene, do we even needs such high rated PSU in our systems?

While you are correct that on the CPU front we are being given a break, it?s now the video cards which take the top spot, with multi GPU configurations and high power chips like the ones on ATI?s X1900 series the need for a powerful PSU is still here. And once you start overclocking the total power consumed might be quite an eye opener.

Silverstone ST75ZF ?Zeus? 750W Power Supply

Madshrimps (c)

(Photo from Silverstone site - our box was in sligthly less presentable state)

The Zeus 750W unit from Silverstone boasts promising specifications, is quite light weight, features only a single 80mm low-noise fan and comes painted in black.

Max. DC Output

750W continuous at 50?C & 90V
( 950W continuous at 25?C & 90V with OCP removed* )

Load Range

	+3.3V	+5V	+12V1	+12V2	+12V3	+12V4	+5VSB	-12V	-5V
Max.(Amps)	24A	30A	18A	18A	18A	18A	3.0A	0.5A	/
Peak (Amps)	/	/	22A	22A	22A	22A	/	/	/
Min.(Amps)	1.5A	1.0A	0.8A	0.8A	0.5A	0.5A	0.1	0	/
Range(%)	+/-5%	+/-5%	+/-5%	+/-5%	+/-5%	+/-5%	+/-5%	+/-10%	/
Ripple (mVp-p)	50mV	50mV	120mV	120mV	120mV	120mV	50mV	120mV	/

combined+3.3 , +5V

180W

combined +12V

60A/720W

Four separate 12v lines might not be the ideal configuration but they can be combined using the series of connectors included with the Zeus PSU.

Input Voltage	90V ~ 264V (Auto Range)
Input Frequency Range	47Hz ~ 63Hz
PFC	Active PFC (? 0.95 at nominal input voltage.)
Efficiency	>80%
MTBF	100,000 hours at 25?C, full load
Operating temperature	0 ~ 50?C
Protection	Over Current Protection, Over Voltage Protection, Short Circuit Protection, No Load Operation Under voltage protection

Color	black (lead-free paint)
Cooling System	1x 80mm ball bearing fan
Noise Level	24 dBA minimum
Weight	2.9 kg
Dimension	150 mm (W) x 86 mm (H) x 180 mm (D)

Rated at minimum 24dBA it?s most promising, we?ll have to find out if the maximum rating is not 60dBA (let?s hope not).

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More reviews in this category can be found below:

CoolerMaster 600, OCZ 600 and Zalman 660W PSU roundup
CoolerMaster updates the UCP900 to version 4: 80+ GOLD!
No-name brand PSUs vs Known Brands: MAD testing
PC Power & Cooling TURBO-COOL 1KW-SR PSU Review
FSP and Silverstone PSU Compared in Crossfire Stress Test
FSP ZEN400 400Watt Passive Cooled Power Supply Review
OCZ ProXstream 1000W Review - kW power to the people
HuntKey HK500-13BP 500W Power Supply Review
Silverstone Zeus ST85ZF 850W Power Supply Review
Spire RocKeteer IV 600W SLI Ready Power Supply Review

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