Reviews - PC Power & Cooling Silencer 910W
Sample Provided by: PC Power & Cooling (By OklahomaWolf on Sat, Jul-04-2009)

Page 3 -

Now it's time to get serious. My hot box is a creation of my own insane devising - a modified ATX case that gets all the heat output from the SunMoon crammed into it. First, it has a duct running from the 268 up into it - this duct has a 120mm howler at each end. As if that wasn't enough, the box is placed directly on top of the 268 as well. Thus, this hot box of mine gets not only forced air heating but convective heating as well. As a result, this thing can reach ambient temperatures of sixty degrees or better.

Now, I won't be letting the Silencer get quite that hot. The hot box temperature depends on how much load I have on the 268, and I'm offloading some of that to the aforementioned supplementary 12V load. Additionally, I have an 80mm exhaust fan in the box that will be running too. Oh don't worry, it'll still get plenty hot. It just won't get turkey roasting hot.

Results from PC P&C Silencer 910W HOT load tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
Eff. Intake/
Exhaust
Simulated system load tests
Test
1
2A 2A 14A 196W/
230W
85.2% 26°C/
28°C
3.38V 5.13V 12.25V
Test
2
4A 4A 26A 359W/
410W
87.6% 32°C/
35°C
3.38V 5.12V 12.22V
Test
3
5A 5A 40A 538W/
609W
88.3% 38°C/
42°C
3.37V 5.12V 12.19V
Test
4
7A 7A 54A 728W/
823W
88.5% 40°C/
46°C
3.36V 5.11V 12.16V
Test
5
9A 9A 68A 918W/
1073W
85.6% 46°C/
60°C
3.36V 5.10V 12.13V
Test
CL1
18A 18A 2A 184W/
228W
80.7% 37°C/
42°C
3.35V 5.08V 12.24V
Test
CL2
1A 1A 74A 914W/
1056W
86.6% 44°C/
57°C
3.37V 5.13V 12.13V

Do you want the good news or the bad news first? I said DO YOU WANT THE... oh, sorry, I forgot to shut the unit down. Yes, folks, that fan made itself known. By test four, it was ear-blastingly loud. I'm not even joking. Six 120mm fans and an 80mm fan in the same general area, and all of them combined were quieter than that 80mm fan in the Silencer. It got really loud. I do believe this unit is in contention with that GlacialPower 550W I once tested for the title of "loudest power supply I've ever tested." Seriously. Air gap? High efficiency? Clearly neither of those two items are helping much at all in this case.

That said, PC Power and Cooling brought the awesome sauce to the picnic again, for the voltage regulation is now tighter than it was cold. And in temperatures exceeding the rated spec, too. All major rails came down with onepercentitis and took an ambulance ride to Rock Solid Memorial Hospital, and stayed there until I was done testing. Yes, friends, this unit was so gosh darn stable it was sick. Your ears might not be able to stand being in the same room with it at high loads and high temperatures, but at least your computer will be stable.

Oscilloscope Measurements - PC P&C Silencer 910W
Test #
+3.3V
+5V
+12V
Test
1
Test
2
Test
3
Test
4
Test
5
Test
CL1
Test
CL2

Is it just me, or is the awesome sauce turning out to be a limitless supply? Good golly - PC Power and Cooling sure took my challenge seriously in the Signature 850W review, because not one rail exceeded 20mV of ripple or noise at any time. Sure, there have been a couple units to best this unit on the 12V side, like the "is it even turned on" sweetness in the Antec Signatures and CP-850, but the Signatures didn't beat this unit on the 5V and 3.3V side of things and even the CP-850 is barely in the same league.

Conversely, the Corsair HX850 can beat this unit by a hair on the 3.3V and 5V side, but not the 12V side. It's really hard to call a winner in a contest of awesome when it gets this close. You folks would do well with any of these mentioned units.



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