Queiting the CASE with Capet , Will it work good?

[Myself and I]

Well i read somewhere that some guy put carpet glued to the sides of his case to quiet his fans. I am running 3 80mm 2 92mm blow holes and 1 80mm and 1 92mm from the psu. My cpu fan will be at least 80mm running 4000+rpm

I am currently building the case
which i have pics of it
http://www.coolerstar.com/noname32.html

'The psu is a enermax 431
The heatsink will be a alpha pal 8045 with a high speed delta.
I havent bought the mobo yet or cpu but i did hook up the fans with the psu and let me tell you this thing is pulling some serious air on the mobo and in the case,
The 2 92mm fans are cooling the pci slots and mobo .
do you think i should put carpet on this case to help the noise or will that keep the heat from disapating from the outside?
Thanks

[Warlord2]

I would just put all the fans at 7v and see what happens

the carpit thing is realy only good for high pitch fans like the delta 38 so it realy wouldnt do you any good in this case