This $5.99 Thermaltake Ducting Mod lowered by CPU temps by 2 degrees centigrade under both load and idle. My friend installed it on his T-bred and got the same results.
http://www.newegg.com/app/ViewProdu...999-118&catalog=151&manufactory=BROWSE&depa=1
I have an Alpha PAL8942 with a Sunon 80mm fan on my P4 1.6A @ 2.4Ghz. It didn't fit on my HSF exactly at first because the long Alpha fan screws go all the way into the base of the HSF and account for the 80mm fan. I didn't want to cut the screws in case I wanted to remove the ducting mod later. So, I took an old 80mm fan and used a dremel to cut the guts out of it. Then I mounted the ducting mod on the hollowed out fan using the long Alpha screws. Next, I mounted the Sunon 80mm fan on the ducting mod.
For only $5.99, I thought it did really well. Especially considering that in some HSF reviews the difference between some affordable HSFs and more expensive ones is about 2 degrees but the price difference can be much greater than $5.99.
http://www.newegg.com/app/ViewProdu...999-118&catalog=151&manufactory=BROWSE&depa=1
I have an Alpha PAL8942 with a Sunon 80mm fan on my P4 1.6A @ 2.4Ghz. It didn't fit on my HSF exactly at first because the long Alpha fan screws go all the way into the base of the HSF and account for the 80mm fan. I didn't want to cut the screws in case I wanted to remove the ducting mod later. So, I took an old 80mm fan and used a dremel to cut the guts out of it. Then I mounted the ducting mod on the hollowed out fan using the long Alpha screws. Next, I mounted the Sunon 80mm fan on the ducting mod.
For only $5.99, I thought it did really well. Especially considering that in some HSF reviews the difference between some affordable HSFs and more expensive ones is about 2 degrees but the price difference can be much greater than $5.99.