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-   -   Seasonic G Series 550W Power Supply Review (http://www.jonnyguru.com/forums/showthread.php?t=9588)

Tazz 11-26-2012 07:23 AM

Seasonic G Series 550W Power Supply Review
 
Quote:

Not too long ago, we had a look at our first Seasonic G Series unit. Weighing in at 360 watts, it was yet another amazing power supply from what is arguably the company to beat these days when it comes to fantatic performing units. Now, I've got the 550 watt version on my bench. We're going to see if Seasonic's winning streak continues.
http://www.jonnyguru.com/modules.php...Story&reid=323

ssshjp 11-26-2012 07:53 AM

Cool review.

Tight minor rails helped with keeping average Vdrop within 1.5% then 0.5 point saved.

Original Sin 11-26-2012 08:04 AM

Fun write up.. though you scored it too high imo (10 for performance without perfect 12v regulation and 9 for quality despite the mess on the underside of the PCB). :)

mdk777 11-26-2012 10:01 AM

10 on value seems high also.

$105 normal price...good but not a 10 in my book. :D

CAPSTONE-550-M 550W has been under $85 every day since launch

At current sale price the Seasonic is a 10, but not at list.

allikat 11-26-2012 12:43 PM

Quote:

Originally Posted by Original Sin (Post 93991)
Fun write up.. though you scored it too high imo (10 for performance without perfect 12v regulation and 9 for quality despite the mess on the underside of the PCB). :)

The unit didn't drop enough of a mess on regulation to qualify for the point loss, and he pulled a half point off for the solder blob, and another half point off for the scratch. If he was any harsher on build quality, some of the units he's done in the past would be retrospectively downgraded to sub-zero point scores.

I do think the value score needs to drop a half point however, it's a competitive price, but not one that blows everything else out of the market.

c_hegge 11-26-2012 03:51 PM

Nice review as usual. About the fan - I wouldn't worry about it. ADDA usually make decent ball bearing fans. I've seen a few ADDA sleeve bearing fans seize up, though.

deimos3428 11-26-2012 04:19 PM

Neat unit. I think you scored it well enough, but I gotta ask: how does two 9's plus two 10's equal 9.6?

Oklahoma Wolf 11-26-2012 04:37 PM

Performance category carries a greater weight (40%) in the final score than the others.

Tator Tot 11-26-2012 04:38 PM

Quote:

Originally Posted by deimos3428 (Post 94000)
Neat unit. I think you scored it well enough, but I gotta ask: how does two 9's plus two 10's equal 9.6?

Weighting.

Performance = 40% of score
Functionality = 20% of score
Value = 20% of score
Build Quality = 20% of score

McSteel 11-26-2012 05:00 PM

To further explain, the score is equal to ((Performance x 40) + (Functionality x 20) + (Build Quality x 20) + (Value x 20))/100.

In this case ((10 x 40) + (9 x 20) + (10 x 20) + (9 x 20))/100 = 960/100 = 9.6

Tator Tot 11-26-2012 05:01 PM

That was far too straight faced for an OklahomaWolf review score.

You've gotta divide by moose at some point.

Oklahoma Wolf 11-26-2012 05:14 PM

Wait until next week. The gutless wonder's up to bat. Well... it was, anyway :D

Tator Tot 11-26-2012 05:16 PM

Quote:

Originally Posted by Oklahoma Wolf (Post 94005)
Wait until next week. The gutless wonder's up to bat. Well... it was, anyway :D

Meanwhile at Wolf Labs Inc Co LTD

http://www.ptb.de/cms/fileadmin/inte...1/nh3_lang.gif

rafal_iB_PL 11-26-2012 05:23 PM

Quote:

Originally Posted by c_hegge (Post 93999)
Nice review as usual. About the fan - I wouldn't worry about it. ADDA usually make decent ball bearing fans. I've seen a few ADDA sleeve bearing fans seize up, though.

Generally BB longevity isn't much of an issue. Potentially making some bearing noise @very low rpm, when fan should otherwise be pretty much inaudible OTOH may be one.

allikat 11-26-2012 06:14 PM

Quote:

Originally Posted by Tator Tot (Post 94004)
That was far too straight faced for an OklahomaWolf review score.

You've gotta divide by moose at some point.

It's the standard Canadian equation of:
Moose/SnowyDitch+ (Tim'sCoffee - winningcup)

Original Sin 11-26-2012 09:10 PM

Quote:

Originally Posted by allikat (Post 93996)
The unit didn't drop enough of a mess on regulation to qualify for the point loss, and he pulled a half point off for the solder blob, and another half point off for the scratch. If he was any harsher on build quality, some of the units he's done in the past would be retrospectively downgraded to sub-zero point scores.

I could agree but I still find the PCB underside very ugly (though probably penalized enough), and for the 10 on performance, while justifiable I still think a PSU worthy of a perfect score needs to return perfect 12v regulation (before anything else), and this didn't.

lacrits 11-27-2012 07:40 AM

Having just cleared Gold rating with maximum error tolrance, mediocre low level efficiency and the regulation.. That combined should knock off half a point on the performance.. I think it's a great product in all, but it doesn't deserve a top score in performance since it's not performing "tops".


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