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#Post#: 6--------------------------------------------------
Seasonic G Series 550 W review
By: Lion_Heart Date: October 16, 2012, 10:55 pm
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We would like to thank Seasonic for supplying the review sample.
Such hard times demand a good understanding of the market, and
Seasonic apparently hit a jackpot with their new G series that
consists of budget oriented PSUs promising high performance and
efficiency with a five year warranty. The fresh G series
consists of four members with capacities ranging from 360 W to
650 W. All feature Gold capacity, a single +12V rail,
ball-bearing fans, and high-temperature-rating electrolytic
capacitors. All are based on modern platforms. Every G series
PSU, with the exception of the smallest one, also utilizes a
semi-modular cabling design with flat modular cables.
It is, without any doubt, very nice to see top-notch OEMs like
Seasonic offering higher-end platforms for user-friendly prices.
The capacities of the G series units may look low to some users,
but hardly any system actually needs more than a 500-600W PSU.
Just take a look at the power consumption page of one of
W1zzard's reviews and check how much power a modern graphics
card, without any doubt the most energy consuming component in a
system, eats. That is, if you think a system actually requires a
stronger PSU.
"The stronger, the better" rule doesn't really apply to PSUs.
The best option is to get a PSU strong enough to handle your
system's power consumption. That way you will have the best
possible efficiency at typical loads. Besides, the money you
will save on electricity will also protect the environment by
lowering your energy consumption and carbon footprint. It is
better to get yourself a low to middle capacity PSU that matches
your system if you are not a hard-core overclocker with three to
four graphics cards under the hood.
Specifications
Seasonic SSR-550RM Features & Specs
Max. DC Output
PFC
Efficiency
Operating temperature
Protections
Under Voltage Protection
Over Current Protection
Over Power Protection
Over Temperature Protection
Short Circuit Protection
Cooling
Dimensions
Weight
Compliance
Warranty
Price at time of review (exc. VAT)
This PSU's efficiency is Gold, its capacity is medium, and it
is, as the ATX spec recommends, able to operate at 50°C. All
available protection features for desktop PSUs, including the
essential Over Temperature Protection (OTP), are present inside
the G-550.
The fan that cools down the unit has a 120mm diameter and is
equipped with ball-bearings for increased lifespan. The G-550
has normal dimensions for its capacity and will easily fit in
every chassis that takes ATX PSUs. Finally, the provided
warranty is set at five years, which is a pretty long period.
The G-550, although it is considered cheap for a Gold Seasonic
PSU, still meets some strong competition from, mainly, Rosewill
Capstone units because of its price-tag.
Total Max. Power
There is only one +12V rail that can output almost the unit's
full power, which is really convenient for contemporary systems
that draw most power from this rail. The minor rails are set at
100 W max combined, which is a sufficient power level for a
medium capacity PSU. The 5VSB rail can deliver the standard 2.5
A; the minimum current output we meet in today's PSUs at this
rail.
Cables & Connectors, Power Distribution
Native Cables
ATX connector (540mm)
4+4 pin EPS12V/ATX12V (540mm)
Modular Cables
6+2 pin PCIe (600mm )
SATA (390mm+110mm+110mm+110mm)
SATA (300mm+110mm)
4 pin Molex (410mm+125mm+125mm)
4 pin Molex (305mm+125mm)
FDD adapter (+110mm)
The main downside of the G-550 is the existence of only two PCIe
connectors which greatly restricts the PSU's usability. We think
that Seasonic should provide the G-550 with four PCIe connectors
in order to be able to support two GPUs with dual-power
connectors each. On the other hand, they probably didn't want to
create internal competition with their X-560 unit that features
two PCIe connectors as well. Since the PCIe cables are modular,
the addition of two more connectors is a relatively easy process
that would only increase the cost of the PSU slightly while, at
the same time, highly increasing its usability. The unit does,
thankfully, come with enough SATA and peripheral connectors for
its capacity.
As the above table shows, there are only two native cables. The
EPS cable is relatively short and could cause trouble in a
large, full-tower chassis, but a large chassis is usually
intended for high-end systems with lots of components, and the
G-550 wouldn't suit such a system even if it had a longer EPS
cable. The SATA and peripheral cables come in two sets. One has
more connectors with a longer distance up to the first
connector, and one has fewer connectors on a shorter cable. This
is very convenient and will make cable-management tasks easier.
Finally, all connectors use 18AWG gauges which is, according to
the ATX spec, the minimum requirement for the primary rails.
We do not have anything to comment on about its power
distribution because this PSU feature a single +12 V rail.
#Post#: 175--------------------------------------------------
Re: Seasonic G Series 550 W review
By: Sanjay Date: April 19, 2013, 12:43 am
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It looks like very good PSU. Although Seasonic is a very good
brand.
One question I have only 4 pin CPU power supply in my mother
board.
Can i use this one?
My question is because of it have 4+4 pin CPU power supply.
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