Like the others have said. The "best" is the Swiftech 462A.
Personally, I'd venture to say that with temps as high as you're getting something is wrong with the mounting, paste, or thermistor.
First thing I'd do is take off that heatsink and lap it (use fine grit sandpaper) til it is smooth as glass. Then put some thermal paste. (Arctic Silver is nice, but some Radio Shack thermal paste works fine.) You just want enough to make contact with the entire core. Optimally, a proper application of thermal paste should be almost transluscent.
Carefully, remount the heatsink and plug in the fan to the proper header on the motherboard. If you're still getting temps in the 80's I'd carefully feel the side of the heatsink. At 80 degrees celsius the heasink should be extremely hot. If it is just warm to the touch there's a problem with the temps your motherboard is reporting.
If indeed the heatsink is burning hot; I'd recommend something like an Alpha PAL 6035, PEP 66T, or Globalwin FOP-32. (Don't get that Delta 38 fan) It is an unnecessarily annoying fan. A lot of people love it. I guess the buzzing sound gives them the impression the premium they paid for it is worth it.
Once again. Lap the heatsink and apply thermal paste. If you're still getting high temps, there's something wrong with your setup. As even under piss poor conditions any one of the aforementioned heatsinks should keep a 1.2 GHz Tbird under 50 degrees celsius.
m0r_pheus (Mar 15, 2001 04:42 p.m.):
I just bought a socket a 1.2GHZ t-bird, and it is running at 80C under load "I know that that is terrible"so I need help picking out the best, I already have some picked out, I just can't decide, also I need to pick a kick *** thermal paste, I was thinking Arctic Silver, but I am open for suggestions
Pleeessseee Help!!!