Introduction

We would like to thank In Win for supplying the review sample.

In Win is one of the few companies out there that has the knowledge and the facilities to build some of their PSU offerings themselves, instead of buying a ready platform from one of the usual OEMs (FSP, Seasonic, Delta etc.), making the GreenMe series an in-house product. We are pretty sure that this is the main reason behind the attractive price of all GreenMe units.

The GreenMe PSUs come with another added bonus, besides being made by In Win. For every unit sold, In Win is committed to donate $1 to the WWF (World Wide Fund for Nature) organization. The donation to the WWF is the reason they named their series GreenMe in the first place, since a Bronze efficiency PSU isn’t considered friendly to the environment, at least if compared to Gold and Platinum efficiency units. Nevertheless, in an attempt to increase the eco-friendly profile of the GreenMe units, In Win ships them in a box that is composed of fully recycled materials.

The new GreenMe units come in three versions, with 550 W, 650 W and 750 W capacity. We will test the 650 W capacity unit in this review. Like all GreenMe series PSUs, the GreenMe 650 features a white paint-job that helps it stand out from the crowd of dark colored PSUs, utilizes a non-modular cabling system and, although it has a low efficiency rating for today standards, still uses DC-DC converters for the generation of the minor rails. The last feature provides an efficiency boost and the ability to deliver its full power on the +12V rail alone, which, in this case, consists of four virtual rails.

Specifications

Efficiency is only Bronze, but we shouldn't expect more for such a price. The unit's maximum operating temperature is restricted to 40°C. Protection features include all the basic ones except for OTP (Over Temperature Protection) which is, in our humble opinion, essential in a PSU. The PSU is pretty short, something that will greatly help during its installation. The warranty of this unit is three years long, enough for a PSU of this price category.


There are four +12V rais with 25 A max current output each. The good thing here is that the unit's maximum power can be delivered by the +12V alone if need be, something convenient in a contemporary system because it would draw most power from this rail. The minor rails can deliver up to 120 W combined, which is a sufficient power level for every application, and the 5VSB rail is a little stronger than average.

Cables & Connectors, Power Distribution

The ATX and EPS cables are quite short with 50 cm. At least another 5-10 cm are needed for trouble-free installation in any chassis. Also, the number of PCIe connectors is too small for the capacity of the unit. A 650 W PSU should have at least four PCIe connectors to support two VGAs with dual-power sockets each. A couple more SATA and peripheral connectors would also boost the unit's usability. At least the distance amongst all connectors is adequate.
Regarding gauges size, all connectors use 18AWG wires, which are the minimum required according to ATX spec.


Power distribution is good since the EPS connector is separated from the PCIe ones, and the latter are fed by different +12V rails.

Packaging

The PSU comes in a plain carton box which is, according to In Win, 100% recyclable. We find the series description, along with the unit's capacity, on the front. We meet the 80 Plus Bronze and three year warranty badge near the left top-corner. On the bottom, we find some interesting info about the unit including the DC-DC converters it utilizes, the Japanese bulk (or hold-up) capacitor, and the strict voltage regulation, which is, at a stated 5%, just within the normal range of the ATX spec and nothing extraordinary.


On the sides of the box, we get the PSU's weight and learn that this product was designed to protect the environment: a heavy statement for a Bronze PSU that dissipates much more energy and heat than a Gold or Platinum efficiency PSU.


At the rear of the box, we get a brief features description along with the power specifications table.