instead of the 2 120mm's at the front, i put 1 on top and 1 on the bottom and found it had no more noise than any other PC.
granted, i had seen (heard?) quieter units but it was by no means loud.
i only had it for a few hours while it was being built and tested and haven't been back to see it since but if you do find the noise level unacceptable, good, quiet fans that do 7dB's, and 700 RPM are about $30.
swapping the fan would not put me off that case, it looks pretty cool fully setup.
Many thanks mta for your reply. Coming from a convential desk top to a Testbed type enviroment I am expecting some increase in fan noise levels, I'll just turn the volume up, however I have taken your comments on board re 7dBA fans.
I have ordered the case with optional 200mm fan for the top and 2 x 80mm fans for the rear.
Only time will tell if these optional fans coupled with the standard 2 x 120mm fans and the PSU fan cause me to chase down some 7dBA's
mta and those interested in the following: re fan noise from the HAF XB CoolMaster Test bench case.
Have been running this test bench case now for 2 weeks and one can definately hear the fans - 3 x 120mm, 2 x 80mm plus 1 x 120mm power supply fan, one would expect to hear them however, the sound generated is not objectionable to me, It reminds me of a typical small Server noise.
Most of the noise appears to come from the "standard" 2 x 120mm case fans shipped with the CoolMaster Case and I am sure they are only "el-cheapo's", so If necessary I shall replace them with a couple of Enermax Twister Bearing Silence 120mm PWM Fan http://www.pccasegear.com/index.php?main_page=product_info&cPath=9_510&products_id=17040 @ 500RPM they run about 8dBA
Unfortunately I was not able to use/install the 200mm "top" case fan as here in Aus. my supplier I use does not offer the HAF XB case with the optional gauze top that one can fit a 200mm fan. My top is a solid "see through" top so I now have a spare 200mm fan.