I'm curious about these PSU. Please help...

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dongbin2696

Honorable
Jul 1, 2013
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CORSAIR CX Series CX750 750W
COOLER MASTER GX 650W
SeaSonic M12II 620 Bronze 620W
CORSAIR Gaming Series GS700 700W
Those PSU are about the same price ($1 difference in my place)
I guess it's really hard to tell your experience with each of these PSU so please tell me
1-Why Consair CPU offer much higher Wattage and Seasonic offer lower Wattage at the same price?
I know about the effciency %, but take SeaSonic M12II for example. It says up to 87% of efficiency. Does that means I will get like 540W out of 620W? While the Cooler Master GX 650W has the max output 750W. The Seasonic is the most expensive one and get lots of positive review.
2-What's your favorite Brand.
 
Solution
ko888
If you're looking for Haswell compatibility the GS700 is the only one in your list that has it since it uses the more modern DC-to-DC converters to generate the minor rails.

The Seasonic M12II Bronze 620 is based on an older group regulated design that doesn't support Haswell's C6/C7 sleep states. You would need to go up to the M12II Bronze 650W model for Haswell compatibility since this one uses the more modern DC-to-DC converters to generate the minor rails.

If you're thinking of carrying the PSU forward for a future build then it may be something you may want to consider.
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Onus

Onus

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Jan 27, 2006
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The Seasonic is a vastly superior unit.
The CM GX650 was summarized by HardOCP as a "polished turd in a box;" upon reading the entire review, it is not the worst from this company, which dishonestly labels many of its PSUs according to numerous competent technical reviews.
All of the Corsair CX units are made by CWT. The non-modular ones (such as the one you listed) include some inferior Samxon capacitors that do not like heat and are known to fail early. Fine in light-duty office builds, I would not use one in a gamer. The GS units are also made by CWT, and offhand I do not remember what capacitors they use.
 
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Quaddro

Quaddro

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Sep 1, 2010
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Corsair:
I'm not the fan of cx series fx corsair, because it is the lowest grade of their PSU. Lowest grade means lowest quality of component.
i have a 2 cx430 for my computers and it's fail in one and half years.
About Gaming series, well, i have no experience with this series, but if i would take corsair PSU, i will take only HX and TX series as their high end PSU.

Coolermaster:
Well, as known as CrapMaster..except silentpro series, all of their psu is crap..I will not take coolermaster GX series

Seasonic:
Well known brand, and it's modular.
Not the best PSU for 600 watt range, but it's very durable.
You'll not dissapointed with this PSU.
Get this one..;)

Okay, Let's see the question..
1. Why Consair CPU offer much higher Wattage and Seasonic offer lower Wattage at the same price?
a. Because seasonic is a modular PSU..Modular always pricier than PSU with conventional cable..and Seasonic M12II 620 have a higher quality component than corsair CX series, and make it have a higher price.
b. Up to 87% is the peak efficiency, usually at 40-50% maximum power. when you push your bronze psu to deliver their maximum power, you'll just get around 82-84% efficiency.

2. My favorite brand..?
SuperFlower.. :D
 
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Tabris DarkPeace

Tabris DarkPeace

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Jul 3, 2013
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While I am a Seasonic fan, the Corsairs gets my vote for value there.

You don't sound like the type that needs the extra durability of the M12.
- I run the SeaSonic S12-II (from memory) and it does have lower spec internals than the M12, but not to the point where it affects it's rating. (Heck they can probably do 800 watts DC for brief periods).
- It's not just modular, the wiring is rated to a much higher spec than the S12; they're both over-engineered for safety though.

The Seasonic can output far more than what they rate it for btw, and the 87% efficiency in this case means it would only draw 504 watts at the outlet to provide 438ish watts (DC) internally. (And I doubt your planned system build is going to require 440 watts DC anyway).

They're all good PSUs (except for the COOLER MASTER) and none would disappoint.

HardOCP and Johnny Guru run some highly respected PSU reviews, so check out those two sites (I lean more towards Johnny Guru PSU reviews, only just) to help make up your mind.

- http://www.jonnyguru.com/modules.php?name=NDReviews

ED: OK, Maybe the CORSAIR GAMING SERIES 700W isn't quite up to par, but it's not likely to fail, is it?
 
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ko888

ko888

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Feb 18, 2009
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If you're looking for Haswell compatibility the GS700 is the only one in your list that has it since it uses the more modern DC-to-DC converters to generate the minor rails.

The Seasonic M12II Bronze 620 is based on an older group regulated design that doesn't support Haswell's C6/C7 sleep states. You would need to go up to the M12II Bronze 650W model for Haswell compatibility since this one uses the more modern DC-to-DC converters to generate the minor rails.

If you're thinking of carrying the PSU forward for a future build then it may be something you may want to consider.
 
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