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PC Power & Cooling Silencer Mk III 1200-Watt 80 PLUS Platinum Power Supply Review - Test Results and Final Thoughts

PC Power & Cooling does a great job of providing great performance without emptying the wallet with the new Silencer Mk III 1200W power supply.

| 80 PLUS Platinum PSUs in Cases, Cooling & PSU | Posted: Oct 12, 2012 7:09 am
TweakTown Rating: 92%Manufacturer: PC Power & Cooling

Test Results

 

Our load tests utilize a couple of FAST ATE active load testers and a variety of other equipment such as an oscilloscope, power conditioner, temperature probe and a power consumption meter. You can read more about our standard testing approach here.

 

The tests performed are based around six conceivable setups that are out there and progressively load down the PSU up to the power supply's limits or 1000W, whichever comes first. Since our test equipment's limits are lower than that of the PC Power & Cooling Silencer Mk III 1200W power supply, we can only test it to 1000W.

 

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The above tests represent typical loads that we have measured from various systems and are meant to give a rough idea of where your computer might fall in line with our tests. Please keep in mind that each system is different and actual loads can vary greatly even with similar hardware.

 

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Let's start by taking a look at the voltages to see how well this unit did during testing. Starting with the 12V rail, we see 2% regulation from start to finish with a total drop of .12V. The 5V rail managed to stay within 2% of specification with a total drop of .07V from start to finish. Moving towards the 3.3V rail, we see that regulation was again within 2% of specification with a total voltage drop of .05V.

 

DC Output quality for the Silencer Mk III 1200W was excellent and well within specification. During Test 1, we saw 13mV of noise on our scope. When we increased the loads in Test 3, the ripple climbed to 18mV at a little under half load. During Test 6 under a load of 1000W, the oscilloscope showed a maximum of 28mv on noise on the 12Vrail.

 

The PC Power & Cooling Silencer Mk III 1200W is rated for 80 PLUS Platinum efficiency. This means that the power supply must perform at 90%/92%/89% efficiency at 20%/50%/100% loads respectively. As you can see, the Silencer Mk III 1200W passed on our bench and wasn't close to failing at any point.

 

 

Final Thoughts

 

At 1200W the Silencer Mk III 1200W is the highest wattage Silencer series power supply to come to market. As such, we expected not only lots of power, but quality throughout with great performance. As the results above show, the unit does not disappoint on either of these. Voltage regulation is fantastic from start to finish with all rails at 2% across the board. DC output quality is just as fantastic as noise seen on the 12V rail is under 30mV at 1000W. Let's not forget about the efficiency of the unit either as Platinum efficiency at 1200W isn't an easy task. There are very few Platinum rated power supplies available above 1000W, but OCZ is now on the list.

 

There are some minor issues with the unit, but nothing that will be a deal breaker to most. The relatively low combined output of the minor rails will limit some heavy overclockers, but shouldn't have any impact on those who run everything at stock speeds. What still shocks us the most though is the lack of Over Temperature Protection within the unit. It confuses us even more since temperature is already being monitored in order to control the fan speed.

 

All of that aside, there are two really strong points that the Silencer Mk III 1200W has going for it. One of which is the seven year warranty. It is great to see the warranty stepped up for the 1200W model as it is going to be a power supply you keep around for quite some time. The other is the price tag of $299.

 

This makes it the cheapest 80 Plus Platinum rated power supply in the 1200W and above category and that's something to brag about.

 

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