Vent
I for one have seen and tried the vent you linked to. To me and in my opinion, the claims are overated. Yes the product works, but it's definately not for overclocking. This is just my opinion, and observations after actually using one with an AMD 2500+ set to 3200 specs. It may be fine for an occasional game or some intense surfing and what not, but do not look at it as an overclockers deliverance, it's not. If you working on a system in a work environment,for a client, that is where I may use it, but it is not the overclocking answer. I may sound opinated and I probably am, but this is not an area you shoud visit unless you want to sell it to some one else.
Sincerely, Please flame me if you must, Satchmo