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FSP AURUM PT-1000FM PSU Review

Better known for its high-volume OEM manufacturing business, FSP has achieved appreciable success with its AURUM series of PC power supplies. Built around FSP’s proprietary controller, the AURUM series has a reputation amongst PC enthusiasts for being no-frills and fairly-priced; without compromise of efficiency, or reliability.

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Much of the AURUM series, however, are rated below the kilowatt mark. To cater to the high-end market, FSP’s AURUM PRO range faces stiff competition. The AURUM PT FM series is FSP’s latest answer for high-power output, enthusiast-oriented products. This is also the range from which the PT-1000FM – which is the object of this review – is derived. The prefix suggests “Platinum” 80 PLUS® performance specification, whereas the suffix indicates a “fully modular” cabling regime.

To achieve the required performance, FSP has chosen a LLC-resonant topology over the active-clamp one favoured in its AURUM power supplies. This is not unlike the decision exercised on the (earlier) AURUM PRO series of power supplies. The 1000W unit which we’ll be taking apart in this review represents the middle of the pack: 850W and 1200W versions are also available.

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FSP’s direction for the PT-1000FM is clearly stated on its packaging, namely that of modular cabling, Haswell compatibility, and its platinum-class efficiency. The back of the packaging includes the product specifications and some curves to describe performance under different conditions. The “7” logo indicates a sincere 7-year warranty period for the PT-1000FM.

Unboxing reveals a chassis baked with a textured finish, with arrow-shaped punched vents that are purported to improve ventilation. The 135mm hydraulic bearing fan from Power Logic is surrounded by a platinum shade trim ring to differentiate its efficiency class from “gold” units. Notable is the rearrangement of the output sockets to improve user-friendliness. The 24-pin harness includes sense wires to compensate for IR drop in the wiring.

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Taking the unit apart, we find full-fledged input filtering. The primary rectifier is heatsinked to cope with the output power ratings. A duet of 470uF Nippon Chemicon KMQ capacitors follow. The APFC module is built around the Infineon ICE2PCS02 PFC controller, and curiously, is surrounded by a foil shield. The LLC controller used is the popular CM6901.

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The use of two transformers in the design to generate two 12VDC rails, one of which is used for bucking down to 5V and 3.3V, is part of the secret to the PT-1000FM’s efficiency. Synchronous rectification is used for generating the 12V outputs, and Anpec APW7159 controllers are used on the DC-DC cards. A PS223H guardian is used to implement OCP, OVP, UVP and other fail-safe functions. For backward compatibility, a negative voltage VRM is present in the PT-1000FM. Other than the occasional Rubycon YXG, Nippon Chemicon capacitors dominate the output filters.

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To improve airflow in the unit, 10AWG wiring is used instead of paralleled thin-gauge wires. Much of the PCB solder mask is also removed to create low resistance busses.

The test system uses two GPUs and a 5960X, to load the unit under test at 300W (low-load) and 750W (high-load). The response obtained suggests stellar load regulation even at nearly 80% of rated power output.

High Load:
3v3

5v

12v

Low Load:
lo3v3

 

lo5v

lo12v

The tidy construction and costly materials that go into the PT-1000FM puts it in the flagship category of PC components, and the test results suggests that the build quality is commensurate with its performance. For those in the market for a high-power, high-efficiency power supply, the PT-1000FM will not disappoint.

[This article is translated from VR-Zone Chinese]

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TeamVR
http://vrzone.com
VR-Zone is a leading online technology news publication reporting on bleeding edge trends in PC and mobile gadgets, with in-depth reviews and commentaries.

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