This is why i sent you the like to the aero 4, not the aero 4 lite, the true aero 4 has a pure copper heatsink and that makes all the difference. i run a 3.0 p4, and my aero 4 works like a dream, right now my cpu is at 33c/91f thats about 10 degrees F higher then room temp. also in a previous post you said you found a cool LIKE the aero 4. if this is the case you should have gotten the real thing

Yeah, unfortunately the Aero-4 (nor its equivalents) was not available, only the lite version could be found here (the one I mentioned that was like the Aero-4 actually had a mixed Copper-Aluminum heatsink, and actually performed worse than the Aero-4 lite). One of the nasty quirks about living here in the Philippines - not everything you want is available (it was hard enough looking for a good NVIDIA card - they're so rare here nowadays). I was lucky the Volcano 7+ itself was available here at all. Would you believe when I went to one store and asked a clerk for a good heatsink/fan for the P4 3.0GHz he tried to sell me the STOCK P4 FAN/HEATSINK!?

Well I just did something crazy that actually had some improvements in my PC's cooling. Some time ago I got the Globalwin CAK4-88T, which has a similar copper heatsink to the Thermaltake Volcano 7+ but sports a bigger yet quieter fan (it's as big as a conventional chassis fan, but spins much faster). Its performance was just as good if not better than the Volcano, but definitely less noisy. Then one time out of curiosity I took the CAK4-88T apart (removed the fan, then the special funnel that not only adapts the fan to the smaller sized assembly but also funnels air to the heatsink) and looked at the assembly carefully, and discovered that the screw holes where the funnel goes into can actually accomodate the top half of the Aero-4 (i.e. the blower fan and its shroud). So I did an experiment and installed the Aero-4's blower onto the Globalwin assembly in place of the original Fan and Funnel, then put the GW's original fan on the fan mount of my PC case's side panel (the side panel that you remove to access the inside of the PC has a mounting point for a chassis fan, which blows air almost directly onto the CPU from the outside). The result? Even better cooling! The Prescott's idle temp dips as low as 43C (previously it was around 48C with the original Globalwin), whereas the highest temperature reached so far on high load was just 52C (from a max load temp of 60C)! And the whole setup runs pretty quiet.
 
Guess it pays to experiment sometimes.

Yes it does
 
It also shows just how much cooling you can give to a Prescott CPU if you have a chassis with an Air Guide/Duct on the side panel.
 
All the latest Aopen chassis have this and the guide/duct is adjustable to varying hieghts of heatsink/fans being used. My only complaint was not providing a standard 80mm/8cm mounting hole alignment to augment the guide/duct with more forced air onto the hetsink

Well I just did one more stunt to improve the cooling of my system by modding the case a bit. My PC case actually has provision for up to 4 chassis fans (one is the already mentioned side panel mount [intake], another is at the bottom of the front bezel [intake], and the other two are at the back of the case just beneath the Power Supply and alongside the rear I/O ports [exhaust]), all in use. Turns out each of the two fan mounts on the rear had a series of slats covering them (kinda like blinds partially closed) restricting airflow coming out of the case and thus reducing the cooling effectiveness. What I did was take a pair of wire cutters and just ripped all those slats off, leaving a big hole on each those fan mounts almost big enough to see the whole fan, but then to protect the fans from cutting someone's fingers, I put a standard circular fan grille on each (the kind that gets screwed on to the chassis fans themselves). Now my PC cools even better - lowest temperature my Prescott CPU achieved thus far is 40C.