LM317T Voltage Regulator with Pass Transistor

powercolor HD4870 with Thermalright HR-03 GT and Noctua NF-B9 (92mm) Watch part 2 here : www.youtube.com In this video I'm reapplied the thermal paste using arcticsilver 5 (46-55°C), strangely, it perform worse than my previous Thermalright Chill Factor (44-52°C). The reason I'm using NF-B9 is for silent build. At 1600rpm NF-B9 produce 37.8 CFM airflow at 17.6db noise level, which is quite good. Depends on your build you could also use fan with faster RPM and airflow. You could also install 120mm fan to HR-03 GT, but you'll need to buy Thermalright 120mm fan clip. -Update 2008/7/15- *WARNING* : When installing HR-03 GT, make sure you install all the heat sink properly, including all *ALL* RAM and VRM (Voltage Regulator Module). In this vid I didn't install all (the one with Vitec printed on it, it gets extremely hot without heatsink). It could *PERMANENTLY* damage your card, since the HR-03 GT small heatsink itself will get hot without fan. Be sure to check your VRM temp after installing, not only your GPU temp. IMO, HR-03 GT cooling performance on the VRM isn't that good, yet no review site that cover this.



http://www.youtube.com/watch?v=Fz1gL5TiZfY&hl=en