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Power Supply Unit Huntkey GS550 Review

Huntkey Enterprise Group is a comparatively new player in the global PSU market. However, its products are already well-known to the mainstream customers in different corners of the world. GS series is the one to compete with an army of items from acclaimed manufacturers, featuring so far only two models: GS450 and GS550. Giving names to the models, Huntkey applied a popular marketing approach, where the figure index in the codename exceeds actual wattage index of the unit. Thus, GS550 model is estimated actually for 450 W power. What other surprises are hidden in this model? Let’s find out.

Key Specifications

Power supply unit Huntkey GS550 is housed in a solid case, made of a thick dark-gray steel with a wiry ventilation grid. All basic specifications are marked on the sticker, so that the user can easily integrate it within the system. The +12VDC rail is claimed to provide 384 W power at 32 A current. The interrelation of power on this rail with an overall efficiency makes up 0.85; this vindicates that the model belongs to the budgetary market solution.

Sockets and Connectors

Being a product of lower-end segment, GS550 can’t offer rich connectivity facilities. Huntkey equips the model with minimum cords to meet the demands of entry-level PC systems. Thereby, the overall list of available sockets and connectors looks the following way:
— Main power socket (24-pin) with one demountable connector;
— SATA socket (15-pin) with three connectors on two wires;
— PCI Express 2.0 VGA power socket (8-pin) with one connector;
— SSI processor socket (8-pin) with one demountable connector;
— PCI Express 1.0 VGA power socket (6-pin) with one connector;
— Peripheral socket (4-pin) with three connectors;
— 12V power socket (4-pin) with no connectors;
— Floppy drive socket (4-pin) with one connector.

Internal Framework

Power supply from Huntkey can boast the implementation of a brand platform. All system components are set without skewness, where wiry crowbar switches are absent. It should be noted that, unlike the majority of low-end PSUs, this unit accommodates all necessary capacitors and input filter chokes. There is even Active PFC, based on CM6800 controller, whereas standby power source is based on TNY277PN controller. Voltage regulation is realized according to a group approach: one choke is allotted to +12 V and +5 V rails, while the second one – to +3.3 V rail.

Cooling System

The incorporation of stack heatsinks is probably the key hallmark of GS550. Instead of traditional press molding works, the manufacturer employs the heatsinks with curved aluminum plates and fin parts with frequent finning. Thermal contact is secured due to a dedicated thermal compound and hold-down bolts. The most solid heatsink is located in the low-voltage part of the PCB; it contains seven power semiconductors that rectify voltage from secondary transformer. Huntkey GS550 comes with 120 mm Xinruilian RDH1225S fan, based on slide bearing. Its maximal rotation speed achieves 2400 RPM at 12 V voltage.

Performance

Testing results show that this power supply unit is able to achieve more than 80% efficiency in the power range of 200 W-400 W. The maximal recorded efficiency index equals to 80.8% at 300 W loading. This index steps down with the reduction of loading: on 50 W power conditions the unit performs at 74.5%, on 37 W – at 71%. The most optimal usage range — from 50 W to 300 W.
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  • 02 August 2013, 18:21
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