Introduction

We would like to thank Seasonic for supplying the review sample.



Seasonic is considered a key players when it comes to PSUs, and many of their offerings are among the best money can buy today, which makes Seasonic PSUs especially popular among enthusiast users. However, until their Snow Silent 1050 W unit, Seasonic didn't have anything capable of meeting the low noise levels of other competing high capacity offers (e.g. Super Flower) because Seasonic insists on using 120 mm fans with their high-end PSUs, which results in annoyingly noisy PSUs since smaller fans have to spin faster than larger fans to provide enough airflow. The release of the Silent Snow 1050 W PSU proved that a 120 mm FDB fan and a semi-passive operation can combine to offer a quiet experience if a relaxed fan profile is used, which put Seasonic back on track with the competition. However, since most users don't need units capable of more than 1 kW, Seasonic now also offers a Snow Silent 750 W unit, and we are definitely happy to see lower capacity units being introduced to the line.

The Snow Silent 750 W shares many similarities with its big brother, including its white paint job, Platinum efficiency, and silent operation. The Snow Silent-750 also uses a slower FDB fan and is smaller than the Snow Silent-1050, and both Snow Silent units have the same efficiency rating (80 PLUS Platinum). The lower capacity of the unit we are taking a look at today means that its fan has to handle less heat, which allowed Seasonic to use a quieter, slower fan. For some of you, a quiet PSU isn't a matter of immense importance; however, there those who throttle their system components noise output through, for example, a custom-cooling solutions, which would make a quiet PSU a must.

Specifications

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.

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

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.

Packaging

The only difference the capacity description in the top-right corner on the front, the box design is basically the same as for the Snow Silent-1050. The 80 PLUS badge is right next to a small photo of the PSU, and the silver line on front is exactly the same as those featured on the PSU's sides.


The specifications table is on one of two sides. The other comes with the Platinum efficiency badge and a photo of the unit with its modular panel exposed.


In the top-right corner, at the packaging's top side, are two icons for the unit's ErP and Intel Haswell compatibility. A multilingual features description has been put on the bottom.


You will find some useful information, including several paragraphs that cover the PSU's main features and a graph with the fan's speed curve in semi-passive and normal mode, on the back of the box.

Contents

The unit is protected by packing foam and comes inside a nice cloth bag with Seasonic's logo on it.


The bundle is rich and includes two sets of Velcro straps, several zip-ties, a set of screws, a case badge, and the modular cables.


Seasonic not only provides a user's manual as there is also a piece of paper to inform users of the fact that power hungry VGAs should use two PCIe cables with one connector each instead of a cable with two PCIe connectors. However. you don't have to worry about it since this PSU only comes with PCIe cables with one connector.