Seasonic X-Series 560W
by Martin Kaffei on March 22, 2011 4:00 PM EST- Posted in
- Cases/Cooling/PSUs
- Seasonic
- PSUs
- 80Plus Gold
- 560W
- X-Series
Noise, Efficiency, and Power Factor
| Sound Pressure Level | |
| Load | dB(A) |
| 10% | 0 |
| 20% | 0 |
| 50% | 18 |
| 80% | 23 |
| 100% | 30 |
| 110% | 32 |
There is no noise during low loads since the fan doesn't rotate until the PSU is putting out more than ~112W. If you select appropriate components elsewhere, you can actually use this to create a silent system for low to moderate loads, and you won't have to worry about burning anything out at higher loads. In addition, the RPMs are tolerable up to 50% load. Beyond that point, this PSU is no more silent than competing solutions, but we should keep in mind that most GPUs are louder while gaming so the results are fine. If you want to get uncompromising silence at all loads you can buy the X-460FL, but if silence is the goal you won't want to run higher-end GPUs.
Efficiency and PFC
| 115VAC, 60Hz | ||
| Load | Efficiency | PFC |
| 10% | 82% | 0.975 |
| 20% | 87% | 0.990 |
| 50% | 91% | 0.993 |
| 80% | 91% | 0.995 |
| 100% | 90% | 0.996 |
| 110% | 89% | 0.997 |
This is basically an 850W PSU that doesn't always run the fan. We can see that the efficiency is a bit low at 10% load, but 80 Plus doesn't worry about anything below 20%. The efficiency also drops off slightly at higher loads, but it does meet or exceed the 80 Plus Gold requirements (87/90/87% effeciency at 20/50/100% loads). We are also very happy with the high PFC at all loads, though this is no surprise for the American 115VAC power grid; Europeans and others on 230VAC will have to accept lower PFC but get slightly higher efficiency in return.
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bryanb - Tuesday, March 22, 2011 - link
To the comment about velcro straps: this model comes with 3 velcro straps with a Seasonic logo on them.I have three of these PSU's running from a low wattage router (brazos) to a high wattage desktop (4 core phenom.) One of the PSU's i received was DOA. The Seasonic RMA process is a single html page on their website that unfortunately does not yet include the serial numbers for this particular model in the java script validation logic. Therefore all RMA's have to be emailed and approved manually, which took over a week for the first response. Luckily for me, the NewEgg RMA process is much better than the Seasonic RMA process and within a few days I got a working replacement via NewEgg.
DLimmer - Tuesday, March 22, 2011 - link
First off, Excellent review.I greatly value your expertise, and picked up an Antec TP-650 based off your http://www.anandtech.com/show/3985/three-550w-psus... review.
Minor editing changes:
<first page>
Even most of the S12II and M12II models (which they don't generally offer as review samples) are getting awards all **other** the world for providing high quality in a mainstream market segment.
...all **over** the world...
<last page, second paragraph>
**Stargin** with the connectors, Seasonic shows an instinctive feeling for different...
**Starting**...
I appreciate your reviews and have used them when making purchases on more than one occasion. Thanks!
Martin Kaffei - Tuesday, March 22, 2011 - link
Done, thanks a lot.Drag0nFire - Tuesday, March 22, 2011 - link
Dear Editor,I remember seeing a power supply review in the past that had a diagram of the length of each cable. Such a diagram would be very helpful in the future for making purchasing decisions, especially for those of us with cases where the power supply is far away!
Otherwise, great review! Keep them coming!
--J
vol7ron - Tuesday, March 22, 2011 - link
Martin, could you do some testing of Titanium-Standard PSUs... specifically around the 1kW mark. There's only T-Standard available at NewEgg, which I think is around 500Watts, but if you could contact the vendors and get the 1kW versions - that would be nice.Your readers appreciate when you all analyze products that aren't/won't be available at NewEgg - me especially :)
Folterknecht - Tuesday, March 22, 2011 - link
Hi!In the past, if I remember correctly, the numbers for 230V were included in your reviews here Martin, not only 115V for the american net. Why did you change that? I know this is an american site, but the audience is international ... .
Gruß aus Deutschland
Folterknecht
Martin Kaffei - Wednesday, March 23, 2011 - link
It would be no problem to add these measurements next time.With this I just have more work and I didn't know, that 230VAC results are interesting for some readers here. Good to know.
Grüße zurück.
MrSpadge - Friday, March 25, 2011 - link
Agreed!Nach ein Gruß aus Deutschland ;)
deadlockedworld - Tuesday, March 22, 2011 - link
Reviews like this are why this site is more credible than many of its competitors.DanNeely - Tuesday, March 22, 2011 - link
maybe, but nothing is more fun than reading OklahomaWolf tearing into a cheap piece of junk.