Moving on to the bottom of the Silent Boost RX K8, we get a better look at the copper base and the fins.
As for the copper base, it's a nice thick slab that's polished and is relatively smooth with almost no discernable marks.
Again Thermaltake's mounting clip is top notch. The clip provides an easy method of installation, without the need for any tools such as a screwdriver.
To calculate the idle temperatures, I gave the computer 15 minutes on its own before writing the temperature down.
Next, using Sandra burn in wizard I allowed it to run 30 minutes and recorded the readings.
We will be comparing the Silent Boost RX K8 to a stock heatsink, The Thermaltake Big Typhoon, and the Zalman CNPS 7000B Cu.
From the results we see the Silent Boost RX K8 performs much better than a stock heatsink. Although against the Typhoon it lagged behind, and the numbers compared to the Zalman are very close.
The thing to remember here is a hit in performance is pretty much part of the trade off to get a quieter operating heatsink/fan combo. The Silent Boost RX K8 is a really quiet operating heatsink/fan combo with better than average cooling.
If you're more concerned with a quiet system than overclocking, the Silent Boost RX K8 is for you. If you're an overclocker, you might want to consider Thermaltake's Big Typhoon instead.
Pros:
-Quiet Fan
-Easy install clip
-Copper base
-80mm and 90mm fan compatibility
-Fits on AMD socket 939/754 Opteron, Athlon (64 and 64FX) and Sempron processors.
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