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Thread: Antec Edge Series 650 W review @ TechPowerUp

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    quest for silence is offline Silencer & heathen relic of a human (™ by OW)
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    Default Antec Edge Series 650 W review @ TechPowerUp

    It has been a while since Antec's last mid-capacity PSU line, and we were happy to see them delve back into such a popular category. The EDGE family currently only consists of three members with capacities ranging from 550 W to 750 W, and although their maximum power output puts them in the mid-capacity category, their prices are high enough to classify them as units of the higher end. These aren't budget units, and given their features, we didn't expect them to be. We will put the EDGE unit with 650 W to the test and expect it to perform well because it is based on a Seasonic platform we have come across before.

    The EDG650, like all EDGE units, features a fully modular cabling design, Gold-certified efficiency, and a fancy LED fan. We aren't huge supporters of such marketing gimmicks as the LED fan, but also aren't in the representative majority which has some companies add these in order to make their PSU offering more appealing. And while Antec, oddly enough, doesn't mention it on their packaging, this is a Fluid Dynamic Bearing (FDB) fan. The only downside its increased cost, its bearing is superior to sleeve- and ball-bearings in both noise output and lifetime expectancy. As the fan plays a key role in ensuring longevity and reliability, it is also the second most important component to a PSU with Japanese capacitors that last a long time.
    http://www.techpowerup.com/reviews/Antec/EDG650/1.html

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    Tator Tot (11-29-2014)

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    Hey crmaris, it'll sound a bit nitpicky but...

    The unit uses catchy golden heatsinks and an LLC resonant converter to increase efficiency in its primary side and two DC-DC converters with a semi-synchronous design for the rectification of the main rails in its secondary side.
    I would probably change that sentence to something like:

    This unit uses a gold painted heatsink to catch the eye. The primary side features a LLC resonant converter to increase efficiency with two DC-DC converters in a semi-synchronous design for the rectification of the main rails on its secondary side.
    Mostly to disassociate the heatsink from actually being gold, or having anything to do with increased efficiency. It also helps breakup what was a somewhat lengthy statement.

    I would also add note to the positives section at the end, that the fan has an LED on/off switch. A definite bonus to many that do run case lighting.

    Just some thoughts man, excellent review as always.

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    Fan profile actually looks similar to XTR.

    Looks like it doesn't have an advantage over XFX unit in that area, and those two are interchangeable as recommendations.

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    A semi-synchronous rectification scheme with two PSMN2R6-40YS fets and two SBR10U45 Schottky diodes which rectify the +12V rail is used in the secondary side. Antec avoided using nothing but mosfets in an attempt to lower the production cost; however, doing so had an impact on efficiency.
    Incorrect. These schottky diodes increase efficiency.
    It's been a hard day's night and I've been working like a dog.

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    Not sure what you mean? Synchronous rectification (using mosfets) is generally more efficient than Schottky diodes, not less.

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    Quote Originally Posted by CM Phaedrus View Post
    Not sure what you mean? Synchronous rectification (using mosfets) is generally more efficient than Schottky diodes, not less.
    In a SR circuit there's a Dead Time in every cycle when neither of the SR-MOSFETs conduct. Normally the body-diode of the MOSFET, which is slow and has a relatively high forward voltage, conducts. A schottky diode in parallel with it reduces the switching and conducting loss of this body-diode, because schottky diode is faster and has lower forward voltage than the body-diode.
    It's been a hard day's night and I've been working like a dog.

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    Jon Gerow (12-16-2014), McSteel (12-16-2014), quest for silence (12-16-2014)

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    do you have data to back this up? Not that I don't trust your knowledge you but it is hard to swallow that semi-SR is more efficient that full SR. If it was like this then why the most efficient PSUs nowadays use SR and not semi-SR.

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    What Travis said refers to this particular platform. And, of course, any other that is similar enough. Dead time duration and efficiency impact are dependent on the switching frequency and the general topology of the PSU.
    Careful what you wish for... You just might get it.

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    Yes but where did he get the info and to be more specific the switching frequencies etc of this platform. You have to have inside information to know them (or to measure them in the lab)

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