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The Asus ROG Strix 750 might be based on the new Seasonic Focus Plus Gold platform, but it has several significant differences, with the most notable being the larger heat sinks, which allow for a much more relaxed fan speed profile, and the double ball-bearing fan, which has increased tolerance for high operating temperatures. Indeed, the massive heat sinks, along with the larger PCB required to host them, make a difference, and the ROG Strix 750 is among the most silent power supplies in this wattage category. Nevertheless, it cannot claim the title from the Corsair RM750x, which scores a notably lower overall noise output level, achieving a LAMBDA-A+ rating in the Cybenetics scale.
The major disadvantage of the ROG Strix 750 is the stiff price. It costs notably more than the competing units, including the Corsair RM750x, which achieves higher overall performance and features and even quieter operation, the Seasonic Focus GX-750, and the Fractal Design ION+ 760P.
If you don't mind paying more to get this power supply, you will be left highly satisfied by its performance and the silent operation. Moreover, it is the only PSU in this category offering a double ball-bearing fan, which is suitable for operation under harsh conditions (i.e., higher than 40 degrees Celsius operating temperatures).
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Disclaimer: Aris Mpitziopoulos is Tom's Hardware's PSU reviewer. He is also the Chief Testing Engineer of Cybenetics and developed the Cybenetics certification methodologies apart from his role on Tom's Hardware. Neither Tom's Hardware nor its parent company, Future PLC, are financially involved with Cybenetics. Aris does not perform the actual certifications for Cybenetics.
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