Reviews - Super Flower Golden Silent 500W Fanless
Sample Provided by: Super Flower (By OklahomaWolf on Tue, Jun-21-2011)

Page 2 - Cold Testing

Ok, ok, I'll admit it. I've been watching entirely too much Walker: Texas Ranger lately. You know what that means, right? I pretty much have no choice but to complete this review by roundhouse kicking and karate chopping everything around me. I've already gotten my loading patterns programmed into my SunMoon SM-268, and let me tell you that's not an easy job when you're only letting yourself roundhouse kick the buttons. Especially since I missed them every single time and now have a big hole in the wall by the test bench. How did I solve this conundrum? Let's just say I have a fifth degree black belt in button pushing, too.

And I'll tell you this right now... I can take Chuck Norris in button pushing. See? I just button pushed my way to a whole sentence and you didn't even see it happen. I'm a button pushing ninja.

The SunMoon isn't the only thing in the lab, so I'll run down a list of the other stuff I'll be using: a Tektronix TDS-2012B, dual probe thermometer, multimeter, and a Rek RF9901 power meter.

Results from Superflower SF-500P14FG
STANDBY load tests
Test # +5VSB DC Watts/
AC Watts
P.F. Eff.
1 0.5A 2.54W/
0.355 73.6%
2 1.5A 7.52W/
0.505 75.4%
3 2.5A 12.3W/
0.561 74.1%

It looks like a gang of random thugs is approaching. I'd better get ready to roundhouse kick my way to justice. In the meantime, let's take a quick look at the above chart. As predicted, standby efficiency isn't a real big priority for Superflower, here. And why would it be? Wall draw in standby is so low, it's not that big a deal to increase efficiency here. These results are pretty typical.

Results from Superflower SF-500P14FG low load test
+3.3V +5V +12V 5VSB -12V DC Watts/
AC Watts
P.F. Eff.
10% 1A 1A 3A 0.5A 0.2A 50.2W/
0.955 83.1%
3.36V 5.16V 12.23V 5.05V -12.27V

Well, that was easy. I like it when a random group of tough guys comes up and lets me fight them off one at a time, easy as pie. It never seems to occur to them that it might go easier on them if they all rushed me at once. I blame the epic beard I drew on my face just now with magic marker. Of course, they probably couldn't rush me all at once until they all stopped laughing, either.

But as I look at the above table, I'm not laughing. I have a satisfied smile going on below this cowboy hat instead. The higher the 80 Plus certification level, the more efficient these things usually are at the 10% load level. That said, this unit isn't quite as good here as many 80 Plus Gold units I've looked at. However, this is also a 500 watt model. The efficiency slide below 20% is likely steeper than a larger capacity Gold unit would be.

Results from Superflower SF-500P14FG COLD load tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
Eff. P.F. Top/
Progressive load tests
1 1A 1A 7A 99.1W/
89.1% 0.984 21°C/
3.35V 5.16V 12.23V
2 2A 2A 14A 195.4W/
90.9% 0.983 22°C/
3.35V 5.15V 12.21V
3 3A 3A 20A 279.2W/
91.1% 0.984 24°C/
3.34V 5.14V 12.19V
4 4A 4A 27A 374.8W/
90.8% 0.987 25°C/
3.33V 5.13V


5 5A 5A 36.5A 500.0W/
90.0% 0.990 31°C/
3.32V 5.11V 12.14V
CL1 12A 12A 1A 118.4W/
87.4% 0.990 33°C/
3.33V 5.10V 12.22V
CL2 0A 0A 41.5A 508.4W/
90.4% 0.990 35°C/
3.33V 5.13V 12.13V

On to the main series of load tests, and there are some interesting things to talk about. Other than the fact I just typed up almost a page full of text without you or Chuck Norris seeing what I was up to. Told you I was good.

One of the interesting things of note are in the efficiency results. At first glance, this unit does not pass Platinum. But, at second glance, you will find that if you take into account the 1% error tolerance of my power meter, it does indeed pass Platinum. So, this unit has successfully defended itself against one of my roundhouse kicks.

Another such kick was dodged by the power readings. Like every single other time I've seen this platform, the voltage regulation is doing some roundhouse kicking of its own. Look at the 3.3V rail. That's inside 1% regulation, even in the crossload tests. Look at the 5V rail. Almost as good, just outside 1% if you include the crossload tests. And the 12V rail is no exception to the rule, again inside 1%. This is a very very impressive unit so far.

Now, since this is a fanless design, I've changed the label on the temperature column just this once to show where the thermal probes were. One was on the big top heatsink, the other was at what would normally be the exhaust grille. Even so, with all the power I was sucking out of this unit, the highest temperature I got was thirty-five degrees. Very nice.

I'll meet you on the next page. I need to go consult with my Uncle Ray to make sure I'm doing right by the Spirits.

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