Seasonic X-650 review at Jonnyguru

PSUs: The source of DC power for all components in the PC & often a big noise source.

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netmask254
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Seasonic X-650 review at Jonnyguru

Post by netmask254 » Sun Oct 11, 2009 8:53 pm

http://www.jonnyguru.com/modules.php?na ... 2&reid=169

During testing, seems like the fan is off until 300W, it's very amazing though they are using an open-box testing.

lm
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Post by lm » Mon Oct 12, 2009 9:38 am

DC/AC/efficiency/loss

62.4W/70.3W/88.8%/7.9W
134W/148W/90.5%/14W

It is THE most efficient PC PSU you can get by FAR. And silent for most SPCR-style systems during all operation, and for most other systems as well at least during idle.

Basically it looks like the king of all PSUs. Just can't afford one (nor do I need to replace another quality PSU for years anyway).

JVM
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Re: Seasonic X-650 review at Jonnyguru

Post by JVM » Tue Oct 13, 2009 10:15 am

netmask254 wrote:http://www.jonnyguru.com/modules.php?na ... 2&reid=169

During testing, seems like the fan is off until 300W, it's very amazing though they are using an open-box testing.
"Now, the company also told us temperature will determine the fan speed, so the fan may not turn off in a particularly cramped or poorly ventilated system."

http://techreport.com/discussions.x/17025

Oklahoma Wolf
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Re: Seasonic X-650 review at Jonnyguru

Post by Oklahoma Wolf » Tue Oct 13, 2009 2:34 pm

netmask254 wrote:though they are using an open-box testing.
Did you read page 3? That's not an open box ;)

lm
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Re: Seasonic X-650 review at Jonnyguru

Post by lm » Tue Oct 13, 2009 2:56 pm

JVM wrote: "Now, the company also told us temperature will determine the fan speed, so the fan may not turn off in a particularly cramped or poorly ventilated system."
However it's likely most of these are going into P182-type cases where they have their own thermal zone.

JVM
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Re: Seasonic X-650 review at Jonnyguru

Post by JVM » Tue Oct 13, 2009 3:15 pm

lm wrote:
JVM wrote: "Now, the company also told us temperature will determine the fan speed, so the fan may not turn off in a particularly cramped or poorly ventilated system."
However it's likely most of these are going into P182-type cases where they have their own thermal zone.
I doubt it. Many have read the reviews and more will read them and people will want it, regardless of what kind of case they have--as long as it fits. 8)

Meato
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Post by Meato » Tue Oct 13, 2009 3:19 pm

@Okie Wolf

It was entertaining if nothing else. Thanks for the read.
no TV and no beer make Wolfie something something
20th Treehouse of Horror is coming up!

netmask254
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Re: Seasonic X-650 review at Jonnyguru

Post by netmask254 » Tue Oct 13, 2009 9:28 pm

JVM wrote:
netmask254 wrote:http://www.jonnyguru.com/modules.php?na ... 2&reid=169

During testing, seems like the fan is off until 300W, it's very amazing though they are using an open-box testing.
"Now, the company also told us temperature will determine the fan speed, so the fan may not turn off in a particularly cramped or poorly ventilated system."

http://techreport.com/discussions.x/17025
I believe so, but think they have set a relatively high threshold to start up the fan, which is benefitial from their high efficiency.

For me, it's very interested on the temperature-noise profile after fan is turned on (wait for SPCR's review in future possibly). Otherwise, Antec's P18X or other cases who place the PSU at bottom and breath external air directly (e.g. Silverstone Raven2 & FT02) would be a good emulation of open-box.

Olle P
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Post by Olle P » Fri Oct 16, 2009 6:31 am

Reviewed now also by Hardware Secrets that have PSUs as something of a speciality.
Top results all the way! (Noise levels not commented, other than that the fan is off while the PSU is somewhat cool.)

Cheers
Olle

Oklahoma Wolf
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Post by Oklahoma Wolf » Fri Oct 16, 2009 8:25 am

Olle P wrote:Noise levels not commented, other than that the fan is off while the PSU is somewhat cool.
He's using the same load tester I am... those things get insanely loud. There's no way to do a noise level analysis with those things in the same room :(

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Post by frostedflakes » Fri Oct 16, 2009 8:31 am

I don't know what tester SPCR uses, but I think theirs gets pretty loud as well. IIRC they have the fan on it wired to a switch so they can shut it off for brief periods of time during the testing to take noise measurements.

Oklahoma Wolf
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Post by Oklahoma Wolf » Fri Oct 16, 2009 11:05 am

frostedflakes wrote:wired to a switch so they can shut it off for brief periods of time during the testing to take noise measurements.
The SM-268 wouldn't respond well to that... trust me. I speak from experience when I say replacing MOSFETs in there is no fun :(

Ksanderash
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Post by Ksanderash » Fri Oct 16, 2009 11:18 am

There is a relay on the pcb. I bet it disconnects the high voltage circuitry from AC main to avoid unwanted energy waste when standby.

Oklahoma Wolf
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Post by Oklahoma Wolf » Fri Oct 16, 2009 5:35 pm

Ksanderash wrote:There is a relay on the pcb. I bet it disconnects the high voltage circuitry from AC main to avoid unwanted energy waste when standby.
Nope, it's used to manage inrush current by shorting the NTC thermistors once the unit is powered up. If it disconnected the mains, you'd get no standby power.

Ksanderash
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Post by Ksanderash » Sat Oct 17, 2009 6:19 am

Oklahoma Wolf
If it disconnected the mains, you'd get no standby power.
And if the standby module is connected directly to AC main, bypassing relay? ;) This schematic solution can be viewed in Antec Signature SG-850. Maybe it isn't the case, but that is how high energy economy can be succeeded.

Image
(brown coloured component on the left-hand side)

My cheap InWin 30$ PSU draws about 14W AC in standby itself. The motherboard adds only 1.5W being connected by ATX24.

Oklahoma Wolf
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Post by Oklahoma Wolf » Sat Oct 17, 2009 10:00 am

That isn't the case in this unit, or in the Signature either IIRC.

EsaT
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Post by EsaT » Sat Oct 17, 2009 11:31 am

Oklahoma Wolf wrote:
frostedflakes wrote:wired to a switch so they can shut it off for brief periods of time during the testing to take noise measurements.
The SM-268 wouldn't respond well to that... trust me. I speak from experience when I say replacing MOSFETs in there is no fun :(
Yeah... like "unplugging" heatsink from CPU/GPU under full load...

And even just disabling active part of cooling would increase temperature very fast...
Everyone can easily check how fast CPU core temperatures rise when heat output rises from idle to full. Sudden dramatic decrease of cooling power would do the same.

Ksanderash
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Post by Ksanderash » Sun Oct 18, 2009 3:25 pm

Oklahoma Wolf
That isn't the case in this unit, or in the Signature either IIRC.
So this source is mistaken? I thought Oleg Artamonov is enough honoured person concerning electronics, and PC PSUs especially, to do such mistakes :?

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