However, just switched my Alpha 6035 for an Alpha PEP66 and (using arctic silver) lowered my core temps from an average of 109 to 114F to 102 to 107F.
BTW - I am running a duron 800 oc'd to 1 gig on an abit kt7-Raid MB. The fit of the pep 66 is tight - but very workable- just mount the shroud and fan to point the other way towards the fron of your case and you'll clear the capacitors (you gotta assempble the alpha's anyhow- very simple procedure).
Worth mentioning also is this - prior cpu temp ranges of 109-114F were with the sides off my old case ! With the side on the cpu temps averaged about 5 degreees F higher.
My new case is an antec 830 sx with four fans- sweet case !
The alpha pep66 is a little noisier- but overall, my system is quieter than before because the antec case ps is quieter than my old sparkle unit.
I Just replaced my Alpha 6035 with a Globawin FOP 38, it lowered my 1.2ghz t-bird's temps from 53C to 43C, the Alpha's with the delta fans are great but expensive. I paid $25 for my FOP 38, I just visited www.coolerchips.comfrom a link posted earlier, their only $22 there, oh well you live and learn