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Well, this is no ordinary heatsink fan combo my mod happy friend. Hot on the heals of their Extreme Volcano 12 comes this: The Thermaltake Silent Boost A1889, and Thermaltake themselves boast a few hefty claims. Let's see if those claims hold water. </p> <p align="center"><a href="atruereview/silentboost/1.jpg"><img src="atruereview/silentboost/1th.jpg" alt="Thermaltake Silent Boost Heatsink, A1889" border="0" width="166" height="250"></a><br> <font size="-1">Click on image for larger picture</font> </p> <p align="left"><strong>Packaging:</strong></p> <p align="left">Thermaltake's Silent Boost is secured in a blister package. The fan arrived in perfect condition. There were no dents, dings, or scratches.</p> <p><strong>Specifications:</strong></p> <p>Manufacturer rated specs for the Silent Boost as listed on Thermaltake's web site <a href="http://www.thermaltake.com/coolers/volcano/rs/a1889a.htm">www.thermaltake.com</a>. </p> <ul><li>Fan Dimensions: 80x80x25 mm (hydro wave bearing)</li> <li>Heatsink Dimensions: 82x70x49 mm</li> <li>Voltage:Rated = 12v / Start = 7v </li> <li>Material: Copper </li> <li>Max Air Flow: 27.5 CFM </li> <li>Noise: 21 dBA </li> <li>Rated Fan Speed:2450 RPM +/- 10%</li> </ul> <p align="left"><b>First Look</b>:</p> <p align="left"> Sprung from it's retail pack, this is what's included: the hsf, some silicone based thermal compound, and a foldout instructional pamphlet.</p> <p align="center"><a href="atruereview/silentboost/2.jpg"><img src="atruereview/silentboost/2th.jpg" alt="Thermaltake Silent Boost Heatsink, A1889" border="0" width="250" height="164"></a><br> <font size="-1">Click on image for larger picture</font> </p> <p align="left">Upon closer inspection you can see how Thermaltake is going about making the Silent Boost fan quiet. Thermaltake is using a unique frame design that pulls air in from multiple directions which they claim reduces relative noise. The fan is a Panaflo FBL08A12M, hydro wave bearing fan, rated at 28dBA, though TT rates it at 21dBA. How does this work? Slits in the side of the fan allow air to flow into the fan and counters the vortices on the tip of the blades. Tip vortices are a major source of noise in axial fans. Removing the vortices can reduce noise from 4 to 8 dB on a typical fan.</p> <p>To power the Panaflo fan a typical three pin ATX power connector is used. </p> <p align="center"><a href="atruereview/silentboost/3.jpg"><img src="atruereview/silentboost/3th.jpg" alt="Thermaltake Silent Boost Heatsink, A1889" border="0" width="250" height="215"></a><br> <font size="-1">Click on image for larger picture</font></p> <p align="left">The heatsink made of solid copper and machined very nicely. From my experience, I'd say better than most, though not quite a mirror finish. Noticing the etched Thermaltake URL on the bottom of the sink, I wonder how much that actually adds to the overall cost. </p> <p align="left">The fins of the heatsink are thin and straight with a solder joint at the base that is virtually nonexistent. Thin fins provide less surface area for air molecules to collide with resulting in more air flow.</p> <p align="left">To my surprise, a typical (tiny) 3 point clip is used to attach this behemoth to your zif socket. </p> <p align="center"><a href="atruereview/silentboost/4.jpg"><img src="atruereview/silentboost/4th.jpg" alt="Thermaltake Silent Boost Heatsink, A1889" border="0" width="250" height="157"></a><br> <font size="-1">Click on image for larger picture</font></p> <p align="left">Speaking of behemoth, this hsf weighs in at a massive 1 lb 1.7 oz. That's gargantuan when compared to the stock heatsink. </p> <p align="center"><a href="atruereview/silentboost/5.jpg"><img src="atruereview/silentboost/5th.jpg" alt="Thermaltake Silent Boost Heatsink, A1889" border="0" width="237" height="250"></a><br> <font size="-1">Click on image for larger picture</font></p> <p align="left">The stock AMD heatsink, with a copper bottom, weighing in at a paltry 10.5 ounces, uses a nearly identical (tiny) 3 point mounting clip! </p> <p align="center"><a href="atruereview/silentboost/6.jpg"><img src="atruereview/silentboost/6th.jpg" alt="Thermaltake Silent Boost Heatsink, A1889" border="0" width="250" height="234"></a><br> <font size="-1">Click on image for larger picture</font></p> <p align="right"><a href="atruereview/silentboost/silentboost.php"></a> <a href="silentboost/silentboost.php">Next (Testing & Conclusion)</a></p> </div> </td> </tr> </table> </div> <div id="footer" class="clr"> <div class="rk-1"> <div class="rk-2"> <div id="the-footer"> <script type="text/javascript"> var gaJsHost = (("https:" == document.location.protocol) ? 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