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Sunbeamtech Rheosmart 6 Fan Controller Review

nVidia_Freak    -   January 20, 2011
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Testing:

Testing Setup:

  • Processor: Phenom II x6 1055T @ 245x14
  • CPU Cooling: Noctua NH-C12P-SE14
  • CPU Fan(s): Noctua NF-P14
  • Motherboard: Gigabyte GA-890FXA-UD5
  • Memory: 2x2GB G.SKILL F3 PC3 12800 9-9-9-25 2T @ 1632
  • Video Card(s): XFX HD5870 1GB @ 900/1250 + BFG 8800GT (PhysX)
  • Power Supply: XFX BE 850w
  • Soundcard: ESI Juli@
  • Optical Drive: NEC ND-3550A
  • Hard Drive: Seagate Barracuda 7200.12 750GB
  • OS: Windows 7 Ultimate x64

Construction:

The Rheosmart 6's overall construction is adequate, however, the force needed to turn the control knobs is not consistent. The middle two knobs require the least force and the outer two require the most. Despite the inconsistent feel of the knobs, they function well enough and allow for very fine adjustments. The mode buttons underneath the knobs feel somewhat loose, though they are firm when pressed and don't stick. The LEDs are always on, but, they aren't an annoyance. They provide enough light so as to be able to see them without looking at them directly, and, they produce enough light to illuminate the tops of the knobs, so they're easy to find in the dark.

Functionality:

All the knobs have an approximate 270° turning radius, which, when in manual mode, varies the voltage supplied to the selected fan. Voltage ranges from 0v (off) at full left, and 12v (full power) at full right. Although the box and manual state otherwise, using the automatic Smart Cooling System with the supplied PWM cable connected does not vary any of the fans' speed based on temperature. Instead, automatic mode runs the selected fan(s) at the maximum 12v power. This isn't a particularly huge deal since all six of the connected fans can be manually adjusted, however, it's no good if you're looking to set it and forget it. The only fan that correlates speed and temperature is the CPU cooling fan. This is very useful for anyone that has a 3-pin fan on their CPU heatsink.

Using the Rheosmart 6 and the supplied PWM cable connected to the CPU_FAN header will adjust the CPU fan speed based on temperature. With the previously mentioned testing setup idle temperature was approximately 29°c and the heatsink fan rotated at 650RPM. Under load at 48°c the Rheosmart 6 increased the voltage supplied to the fan and thus its speed to approximately 900RPM. It's a very useful feature, but it's also unfortunate that this is the only situation where the Smart Cooling System works.




  1. Introduction & Closer Look
  2. Closer Look Continued
  3. Specifications & Features
  4. Installation
  5. Testing
  6. Conclusion
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