AFAIK, when your components are running hot, they cause more errors, so commands have to be resent. This will either make your computer act slower, or crash it.

During heavy CPU or USB loads, my new K8V emits a loud but almost inaudibly pitched whining noise from the MOSFET/Power Regulation area. I've contacted Asus tech support, and they say that it's EMI due to improper grounding, does this sound right to you? I can hear it even over the fairly noise stoc...

Are these really effective?

I'll be running a Vantec Stealth at 7V in my TP 430w, would the additional of the gaskets do me any good, either on the fan directly or around the whole PSU?