Rosewill Tachyon 750W Power Supply Review

Installation & Testing
Installing the Tachyon 750 is very easy. We had no issues getting it installed in our Cooler Master Cosmos II case. With such a large case it was easy to hide extra cables and since this unit is modular you use only the cables you need.

Rosewill Tachyon 750W Power Supply Review Rosewill Tachyon 750W Power Supply Review

We will be testing the Tachyon 750W in our Intel X79 system, which is comprised of the following components.

Processor: Intel Core i7-4960X Extreme Edition
Motherboard: ASUS P9X79 Pro
Video Card: NVIDIA GeForce GTX 680
Memory: 16GB Kingston 10th Anniversary
Power: Rosewill Tachyon 750W
Storage: 750GB SATA Drive
Cooling: Noctua NH-U12S
Case: Cooler Master Cosmos II with 5 fans

We will be using OCCT to test this power supply. Initial spot check on the 3.3V, 5V and 12V rails were 3.36V, 5.12V and 12.19V respectively. We will be running OCCT’s power supply test for 1 hour to stress test the power supply. Below are the results.


2013-09-18-16h58-Voltage-+3.3 V


2013-09-18-16h58-Voltage-+5 V


2013-09-18-16h58-Voltage-+12 V

All of the rails did show “ripple”, but the 3V rail was the most solid. Even so all rails stayed within the 5% voltage regulation that we like to see, actually all rails were under 1% exepct for the 3.3V rail, which is really good. For those interested the voltage regulation on the 3.3V, 5V and 12V rails were 1.48%, 0.78% and 0.82% respectively. Good to see the 12V rail perform so well.

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