The company we know today as Sky Hawk Computer Group is one of the earliest subsidiaries of San Hawk Technic Co., Ltd., (San Hawk) established in 1992. San Hawk of Taipei began producing PC chassis, shortly thereafter Sky Hawk Computer and Eagle Lord Development Limited located in Belgium and Hong Kong respectively were incorporated into the company. In 1996 Sky Hawk entered the US market and in 2000 began working extensively with aluminum as a fabrication material. By 2004 Sky Hawk had introduced their echoQ mini bare-bone PC (reviewed by HotHardware) part of their IMC series. It was at that time they made available their Triple Rail PSU with Audio Standby. Currently San Hawk production facilities include a 63,000-square meter plant in Shenzhen employing 2,350 people, including 99 QC technicians, 30 R&D engineers and 35 manager/technicians. Today we test the Power One GM670SC.



We tested Sky Hawk's Power One GM620SC which held its rails well and 7-months later that unit still works flawlessly despite our tearing it apart to resolve an issue around its multiple 12V rails meeting Form Factor ATX12V Power Supply Design Guide v.2.2 specifications. Onto cosmetics, once again comparing the GM670Sc to the GM620SC I preferred the brushed metal powder coat of the latter in comparison to the "flat" powder coat of the GM670SC seen below.



Specifications for the GM670SC seem to follow the same basic formula as other Power One units in the GM-SC series. The primary difference being an increase in power; classifying the GM670SC as the most powerful model in that line.



The "Audio Standby" feature which allows CD/VCD/DVD play-back without having to boot into the operating System requires an optical drive equipped with front panel play/pause/stop/eject buttons. This feature wasn't received well by Reviewers whom labeled it a "gimmick." To make matters worse early GM-SC series PSUs were shipped with cabling for this feature which was of inadequate length. That congenital defect has been cured, however; despite reviewer caveats this feature was troublesome Sky Hawk has stood behind Audio Standby. Yet as if by force majeure this review will find a use for the Audio Standby molex that’s bound to peak the interest of more then a few PC-enthusiasts.



As is evident in the photo the GM670SC offers a total of five modular outlets. Two of these supplies SATA drives with two Serial ATA connectors each for a total of four. The 6-pin connectors for PCI-ex graphic cards use a single cable with two connectors allowing SLI configurations.



One major change made to the steel chassis GM620SC is probably more significant then any other, its increased fan size at 120mm. As PC-owners we are in a constant struggle with an indefatigable adversary, heat. Sky Hawk's temperature controlled fans have been incorporated into most models, in our test unit the fan is activated once the internal temperature reaches 40C/104F. This formula satisfies both the Silent PC devotees, while ensuring sensitive electronics will last a lifetime.



Despite the unpopularity of the Audio Standby feature, Sky Hawk power supplies have much to offer and have fared well.

With the cover opened to reveal the fan lets look deeper into the topology and parts spec for this PSU ->