Best Sound Absorbing Foam?

Hi all,
I am a BOINC user on my Alienware Aurora. As such, my GPU and CPU are often running at 99%, so my computer makes a lot of noise. This site seems to have a lot of cool items: http://www.performance-pcs.com/catalog/index.php?main_page=index&cPath=60_485_486
Can anyone recommend a foam system to me? Thanks!

Change your fans... for a cost of $4.95 to $21.95, you can replace nearly any fan. Then make sure you have a low-noise power supply (Antec, Seasonic, FSP Group, Corsair). Then consider a change in your CPU fan. Those three changes are the best way to drop your sound to where it is no longer considered noise.
I cannot recommend a foam system that is not troublesome. Most foam products harden under heat found in a case, and pretty soon, you are enjoying more noise than you can stand.