Seasonic
SSR-550RM (G-550)
Packaging and accessories
The packaging and accessories of this model
are similar, so we do not need to describe them again.
The
fabric bag is to store the unused power cables in.
The unique thing is added to the design of
this 550W model: there is a fabric bag to store the unused power cables in.
Exterior style
The
product image
We can identify the only external
difference from the low-end model: the connectors for the cables. However, if
two PSUs are laid next to each other, the 500W model seems slightly longer (160
instead of 140 mm).
There is a screw at the bottom panel,
whereas the SSR-360GP model does not have.
Circuit design
Circuit
design
Generally, the interior design is similar
to the one of low-end model above. The SSR-550RM features with PFC, which is
very useful and voltage regulation is based on DC-DC controllers.
However, the placement of components on the
main PCB is another matter.
Circuit
board PCB
The components which are considered
individually are different, similar to the DC-DC converter card. There is no
doubt because the power strips work in mcws higher in this model.
PCB
design
Since the PSU’s front panel is now
positioned by the connectors for the cables, so the controller chips have to
move to two small daughter cards.
One of them contains a PS223 supervisor. It
is used in many PSUs from different brands and different prices.
The remaining daughter card carries a
connected half-bridge LLC converter Infineon ICE2HS01G LLC along with a PFC
controller 3PCS01.
The
structure of the product
As in the low-end model, there is a Hitachi
AIC capacitor at the input and the electrolytic capacitors from Rubycon
elsewhere.
The
capacitors and cables
The output capacitors are manufactured by
United Chemi-Con.
Cables and connectors
SSR-550RM is equipped with cables and
connectors as below:
·
A mainboard cable with a 24-pin connector (54
cm)
·
A CPU cable with 4 +4- pin connector (54 cm)
·
Two connectors for graphics card cables
·
Four connecting ports for peripheral power
cables
Coming with the
PSU are:
·
Two graphics card cables with one 6+2-pin
connector on each (60 cm)
·
One cable with three PATA power connectors
(40+13+12 cm)
·
One cable with two PATA power connectors (31+12
cm)
·
One cable with four SATA power connectors
(40+12+12+12 cm)
·
One cable with two SATA power connectors (30+12
cm)
·
One adapter from a PATA power connector to a
floppy-drive plug (10 cm)
The choice of
connectors depends on the number of PSU’s wattage but the CPU power cable is
too short. It has the same length as in the low-end model above (the difference
is allowed in the measurements of the manufacturer: both PSUs have a CPU power
cable with the length of 550 mm and with a tolerance of -15/+30 mm), but the
SSR-550RM is used in a large system case where the 550mm cable will not be long
enough to be shielded inside the mainboard.
Technical specifications
Power management
·
Rated Power, W: 550
·
AC input voltage, V: 90-264
·
AC input frequency, Hz: 50-60
·
Combined power (+3.3 V), W: 100
·
Combined power (+12 V), W: 540
·
Combined power (+5 V), W: 100
·
Combined power (-12V), W: 3.6
·
Combined power (+5 VSB), W: 12.5
·
Max output current (+3.3 V), A: 20
·
Max output current (+5 V), A: 45
·
Max output current (-12V), A: 0.3
·
Max output current (+5 VSB), A: 2.5Max output
current (+5Vsb), A: 2.5
Cooling system
·
Diameter, fan, mm: 120
Connection
·
Number of SATA power connectors: 6
·
Peripheral power connectors (Molex) (4 feet): 2
·
PCI PCI Express power connectors (6 feet): 1
Product size
·
Width, mm: 160
·
Depth, mm: 150
·
Height, mm: 86
Certificate,
80 PLUS certification
·
80 PLUS Gold
The technical
specs are in accordance with those of low-end models and meet today’s
standards. The SSR-550RM can make the most of its power through +12V rail while
the capacity is to simultaneously combine the +3.3V and +5V rails is only at
100 watts.
The standby power source can load up to
2.5A, as a characteristic of the mid-range PSUs.
Similar to the previous models, the
SSR-550RM comes with the 80 PLUS Gold standard.
