Super Flower Amazon 650W Power Supply
by Christoph Katzer on October 16, 2008 3:00 AM EST- Posted in
- Cases/Cooling/PSUs
Temperatures, Fan Speed, and Acoustics
Both heatsinks remain very cool relative to what we normally see. During testing they stay under 50°C and only surpass that temperature when we exceed the maximum 650W power rating. The heatsink and exhaust temperatures are very close, which shows that the power supply is doing a good job of getting rid of excess heat. The Super Flower 650W achieves one of the best temperature results we've seen to date, likely helped by the 140mm fan.
The fan speed remains at its minimum 600 RPM up until 80% load. With a large fan size and good heatsinks, temperatures are low enough that the fan simply doesn't need to spin any faster. At maximum load and with a warmer ambient temperature the fan begins turning faster, but it still doesn't reach very high RPMs. A quick calculation of fan area indicates the 140mm fan should move at least 36% more air than a 120mm fan, so even though the fan speed is much slower than what we normally see it should be sufficient.
A major advantage of having a large fan spinning at lower RPMs is reduced noise levels, which we see in the above graph. In fact, outside of fanless power supplies, this is the quietest power supply we have ever heard -- or not heard in this case. It stays at an incredible 18dB(A) up to 550W, at which point additional loads increase the noise level by 1dB(A). The fan makes no noise that we could detect, and there wasn't any ticking (something we've noticed with some other low RPM fans). Whatever else we might say, the 140mm fan with ceramic bearings certainly impresses.
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Christoph Katzer - Thursday, October 16, 2008 - link
I think it's actually interesting what companies can do. It might not be helpful to find a new PSU for your setup, I know, at least not for now. It's showing however what the companies are capable of.InvertMe - Thursday, October 16, 2008 - link
"Super Flower says that we did not the unit we received should be representative of stock units,"Just letting you know. :)
strikeback03 - Thursday, October 16, 2008 - link
"(Ed: The English grammar on the packaging could also use some work.)"Other then the slogan ("Always Accompany With You") I didn't see anything that odd. The Cooler Master Centurion 5 box, for example, is much more interesting.
Looked like there were some burn marks or something like that on parts of the heatsinks? Is that a varnish spray or something?
JarredWalton - Thursday, October 16, 2008 - link
Regarding grammar, I was thinking more of the packaging, not the PSU label. You can see what I mean in this image:http://images.anandtech.com/galleries/248/08.jpg">http://images.anandtech.com/galleries/248/08.jpg
Is it terrible? No, but there are lots of little things. "Support Intel Core 2..." instead of "Supports". "More than 2000 times ON/OFF test." "PCI-E 6pin and 8(6+2)pin Connector Satisfy High-end Graphic Card Requirement." (...connectors support high-end graphics cards" would be better.) Just a guess, but I'm sure their manual has some interesting wording as well. Never mind the company name of Super Flower, which sounds like something from the 60s. :-)
strikeback03 - Thursday, October 16, 2008 - link
Could also be the name of a Chinese take-out place, they tend to follow a form like that.Sure, the label isn't great, but compared to some of the boxes and manuals I have seen before it is quite clear. As you said, their manual might prove more interesting.
Christoph Katzer - Thursday, October 16, 2008 - link
Was actually kind of scratched like they fell on the floor ;)InvertMe - Thursday, October 16, 2008 - link
That's what we call durablity testing.InvertMe - Thursday, October 16, 2008 - link
durability >< going to get some more coffee.juniorMen - Tuesday, March 22, 2022 - link
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