Seasonic Snow Silent 750 W Review 17

Seasonic Snow Silent 750 W Review

Packaging, Contents & Exterior »

Specifications

Seasonic Snow Silent-750
Features & Specs
Max. DC Output750 W
PFC
Active PFC
Efficiency
80 Plus Platinum
Modular
Yes (fully)
Intel Haswell Ready
Yes
Operating temperature
0°C ~ 50°C
Protections
Over Voltage Protection
Under Voltage Protection
Over Power Protection
Over Temperature Protection
Short Circuit Protection
Cooling
120 mm Fluid Dynamic Bearing Fan
(HA1225M12F-Z)
Semi-passive operation
Yes (Selectable)
Dimensions
150 mm (W) x 86 mm (H) x 170 mm (D)
Weight
1.9 kg
Compliance
ATX12V v2.4, EPS 2.92
Warranty
7 years
Price at time of review
(excl. VAT)
$179.90
Efficiency meets 80 PLUS Platinum requirements, and the PSU can deliver its full power continuously at up to 50°C. All protection features but Over Current Protection (OCP) are present, and a 120 mm FDB fan keeps the unit cool. There is an option for a semi-passive operation that doesn't employ the fan at light-medium loads under normal operating temperatures should you want to keep noise at a minimum. The PSU is also a bit larger than normal for its category, and at seven years, the warranty is very long. Currently, only EVGA offers a longer warranty for their high-end products.

Seasonic Snow Silent-750 Power Specs
Rail3.3V5V12V5VSB-12V
Max. Power25A25A62A3A0.5A
125W744W15W6W
Total Max. Power750W
As per usual for a modern PSU, the +12V rail can deliver the unit's full power alone. At 125 W combined maximum power output, the minor rails are pretty strong, and with 3 A maximum current output, the 5VSB rail is strong enough for a 750 W PSU.

Cables & Connectors, Power Distribution

Modular Cables
DescriptionCable CountConnector Count (Total)
ATX connector 20+4 pin (610mm)11
4+4 pin EPS12V (660mm)11
6+2 pin PCIe (610mm)44
SATA (400mm+110mm+110mm+110mm)28
SATA (300mm+110mm)12
4 pin Molex (400mm+120mm+120mm)13
4 pin Molex (300mm+120mm)12
FDD Adapter (+110mm)11
Some high-end 750 W PSUs offer six PCIe connectors; however, we believe four to be enough for such a medium capacity unit so long as there are also two EPS connectors. More PCIe connectors can actually lead to problems if users connect three high-end VGAs to a 750 W PSU since even such a high-end unit wouldn't be able to cope with the load. There are an adequate number of SATA and 4-pin peripheral connectors, and an FDD adapter has also been included for those who still use such connectivity.

All connectors are installed on pretty long cables, and the distance between SATA and peripheral connectors is good, although some might want the peripheral connectors to be a little further apart. All connectors use 18AWG gauges, which is as ATX spec recommends.

Since this PSU features a single +12V rail, we do not have anything to comment on when it comes to its power distribution.
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