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Old 02-01-2013, 06:32 AM   #1
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Default PC Power & Cooling Silencer Mk III 750 W Power Supply Review

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Title: PC Power & Cooling Silencer Mk III 750 W Power Supply Review
URL: http://www.hardwaresecrets.com/artic...ly-Review/1722

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"The PC Power & Cooling Silencer Mk III power supply series has models ranging from 400 W to 1,200 W. Models from 400 W to 600 W have the 80 Plus Bronze certification, while the 750 W and 850 W models ..."

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Old 02-01-2013, 10:04 AM   #2
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Isn't this the primary inductor rather than a transformer???




I also noticed this pcb has the power design limits listed on the board. Is this unit also missing some components in the transient filtering section???

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Old 02-04-2013, 07:54 AM   #3
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Quote:
Originally Posted by Merman View Post
Isn't this the primary inductor rather than a transformer???
This is the coil from the active PFC circuit.

Quote:
Originally Posted by Merman View Post
I also noticed this pcb has the power design limits listed on the board. Is this unit also missing some components in the transient filtering section???
Missing the MOV, as stated in the review.
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Old 02-04-2013, 08:19 AM   #4
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Maybe I should have said any other components as it seems there are two empty spots there in the image.
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Old 02-05-2013, 09:29 AM   #5
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Ah, I see. Even though there are missing spots, the minimum required components are present (except for the MOV)...
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Old 03-06-2013, 07:24 AM   #6
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Default Something really stinks with this unit.

Thanks for the very detailed break down of the PSU. I ordered it from newegg and got it yesterday, but after reading your review, I want to return it. You don't have a review on this: SS-660XP, but any thoughts on that unit? I originally only bought enermax, but after the 2005/6 liberty issues i had (three psu's failed) I went to corsair then Seasonic. I usually only get the Seasonic [SeaSonic M12II 620] but after some recent bad reviews on the egg, I thought to try someone else. My mistake -- yes, 7 year warranty, which should have been a sign, as OCZ is facing bankruptcy, so the warranty whether 7 or 70 years is irrelevant, as they may not be around for long, and judging by your review, they wont and dont care even about the basic fundamentals of design. I mean, c'mon, temp sensor for fan, but not for temp overload shutdown? No MOV on TFS? No IC to be found to monitor the protections? Something really stinks with this unit.

Anyways, THANKS so much for the honest and in-depth detailed review of this unit.
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Old 03-06-2013, 09:05 AM   #7
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The newest and best models are the new km3 design/model. The xp2 is more or less the same. These are the best psu for the price on the market. The best performing are probably the top of the line Corsairs manufactured by Flectronics the (i) models. Though I understand there are some problems with these units too.

The new Corsair AX series are also the Seasonic km3.

Let me tell you my first Seasonic 860xp was DOA. Cost me $17 shipping to return it. It happens.



http://www.seasonicusa.com/NEW_X-ser...50-750-850.htm


http://www.seasonicusa.com/Platinum_Series_XP2.htm

http://www.hardwaresecrets.com/artic...ly-Review/1690

http://www.hardwaresecrets.com/artic...ly-Review/1695

http://www.hardwaresecrets.com/artic...ly-Review/1687
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Old 03-06-2013, 09:23 AM   #8
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I just spoke with someone is support on their end, and they did say they do have surge protection, but not using MOV, but they didn't elaborate nor could they tell me why no temp overload was included (to be fair, that's a business decision, not a question an engineer can answer.) I'm still kind of antsy about using this PSU and having it damage the components if they took shortcuts -- I mean, this isn't a cheapie PSU, I paid $150 for it. Anyways, I'll decide by today what to do -- so again, it could be a great product and I'm too paranoid about the situation, or it could be a short cut taken product....I just wish they would provide more details about protections instead of marketing like "industrial strength" gimmicks. Seasonic and others don't need to state that, it's a given.

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The newest and best models are the new km3 design/model. The xp2 is more or less the same.
Thanks on the reply -- I was looking at those too, but a lot of people are complaining about coil whine on these SS's on the egg. With your knowledge of PSU's, is it worth to just keep the MKIII 750 or RMA for a Seasonic or wait until the egg get's the MKIII 600 back in stock? I know the 600 MKIII is by Seasonic (I saw the HWS review on it) and it was given a great rating, and it's cheaper. My build is for a server, so no high end GPU, just 32GB ram, 4 HD's and an I7 2600 w/Gigabyte Z77X-UP4 TH board. I would have bought the 600 MKIII, but it was out of stock on the egg.

Also, would you know that given the ripple 3% deviation of this unit, could over time/usage pattern, the deviation become greater (no overclocking / over voltage)?
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Old 03-06-2013, 09:25 AM   #9
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You are too paranoid. This PSU is a good product but there are better as the conclusion states.

There ought to be a MOV in the transient filtering stage but it is not the end of the world. Get a good surge protector as they have MOVs too that also wear out.

http://www.hardwaresecrets.com/artic...uppressors/483

There is short circuit protection in the psu.

http://www.hardwaresecrets.com/artic...Review/1722/12
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Old 03-06-2013, 09:44 AM   #10
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I think i am too -- i think i'm just too overly protective of my hardware Sure, I do know MOVs wear out, so I was curious if they employed series technology (like zerosurge/brickwall/surgex) dumping surges into capacitors and slowly releasing it into the neutral (l-n, not ground.) And if you did do a direct plug into the wall, overtime, enough surges would render it useless, but I just thought it would be a nice to have in addition to a regular surge protector, addtl protection if the surge protector MOVs wear out without knowing they did or in case you had to do a direct wall connect without a surge protector.

Thanks -- sure, I read that about that protection, but I think like Gabe mentioned, it's curious why no temp overload when you have a temp sensor? And how are they monitoring the protections, Gabe found no circuit that does this: "We couldn't find any specific integrated circuit for monitoring the outputs and implementing the proper protections."

Thanks again, I do appreciate your time and help discussing this!

One quick note for anyone reading this, PC Power and Cooling support was quick to reach, so I'll give them very good credit for being able to contact someone in support, in the US and to be able to get answers pretty quickly -- no email tickets that vanish into the ether, but a real live person that can answer technical questions. I'm leaning on keeping this PSU and I hoping that PC Power AND Cooling / OCZ do stay in business and get over the financial troubles they have. It would be a big loss to all of us if we lose more technology companies like this and have less competition.

Last edited by adobepro; 03-06-2013 at 09:51 AM.
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