my sis uses that on her rig, she sez its a bit like a jet engine when you take the lid off the case, but it does the job. If you asked me, i'd go for the cheaper ones like FOP38 or WBK38, they are not as loud but they perform pretty much the same as Dragon Orb 3, as well as being lighter... 
According to Anandtech's Article: Socket A Cooler Roundup the Alpha PAL8045 is the best, albeit it is also the noisiest...
According to Anandtech's Article: Socket A Cooler Roundup the Alpha PAL8045 is the best, albeit it is also the noisiest...