XFX SPEEDSTER MERC 308 Radeon RX 6600 XT Black Review

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Power and Temperature

To test the power and temperature we perform a manual run-through in Cyberpunk 2077 at “Ultra” settings for real-world in-game data.  We use GPUz sensor data to record the results.  We report on the GPUz sensor data for “Board Power” and “GPU Chip Power” when available for our Wattage data. 

XFX SPEEDSTER MERC 308 Radeon RX 6600 XT Black GPU Chip Power Draw Graph

The data above is taken from GPU-Z GPU Chip Power Draw Sensor Data result.  The AMD video cards do not report GPU Board Power.  In GPU Chip Power Draw only, the XFX MERC 308 RX 6600 XT Black requires less power than the GeForce RTX 3060 Ti, and much less than the Radeon RX 5700 XT.  It’s a huge power improvement compared to the Radeon RX 5700 XT, of which it performs on par or slightly better than.  This is a huge efficiency improvement.  Compared to the Radeon RX 5600 XT, it does require more power, but not a lot more.

XFX SPEEDSTER MERC 308 Radeon RX 6600 XT Black GPU Temperature Graph

The XFX MERC 308 RX 6600 XT Black uses a custom XFX Ghost Thermal Cooling solution.  It does an excellent job keeping this GPU cool at 72c and only 1200RPM fan speed, for a quiet operation while gaming.  It never reached temperatures high enough for the fan speed to engage beyond 36% fan speed.  This runs cooler than the XFX Radeon RX 5600 XT video card, Radeon RX 5700, and Radeon RX 5700 XT which ran the hottest.  Interestingly, the GeForce RTX 3060 Ti Founders Edition, which was much faster in performance, does remain slightly cooler on the GPU compared to the XFX RX 6600 XT.

Brent Justicehttps://www.thefpsreview.com
Former managing editor of GPUs at HardOCP for 18 years, Brent Justice has been reviewing computer components since the late 90s, educated in the art and method of the computer hardware review, he brings experience, knowledge, and hands-on testing with a gamer-oriented and hardware enthusiast perspective. You can follow him on Twitter - @Brent_Justice You can sub to his YouTube channel - Justice Gaming https://www.youtube.com/c/JusticeGamingChannel You can check out his computer builds on KIT - @BrentJustice https://kit.co/BrentJustice

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