Thermal dynamics
To measure idle temperatures, a reading was taken after having Windows open on the desktop for 30 minutes. A reading under load was taken with Prime 95’s SmallFFt test running alongside 3DMark Fire Strike.
Here, it is important to note we used Ryzen Master to take our temperature readings for the 1700X. You also may have read that Ryzen 7 strangely reports the temperature to be 20 degrees higher than what it actually is, so that is also worth bearing in-mind.
That being said, the thermals are perfectly acceptable for an air-cooled system. The GPU's peak of 75 degrees shows it certainly benefited from the 2x 140mm intake fans which bring a good supply of fresh air into the chassis.
Acoustics
Acoustically, the Phoenix is far from loud. It is audible when the system is idling, but it does not seem like the case fans ramp up at all when stressed, so in my book, that is a victory.
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