Originally posted by: sm8000
Does that work on Socket A? All thre XP-90 models listed on Thermalright's website say socket 478/754/939/940
True. But Thermalright did make a couple of similar heat sinks for Socket A, with the name SI-97 for one of them, if you locate one still available for sale. I used a couple of Vantec Aeroflow TMD devices with good success. Quiet, but very efficient. There is no center hub for the fan motor, so the air is well distributed. The fan blades are driven from their tips. Neither cheap, nor expensive, and generally still well distributed in the marketplace.
P.S. That same (MassCool) aluminum heat sink you tried, with the name Falcon something (Falcon Rock), and another similar one as Whisper whatever (Whisper Rock), is sold by Speeze, and by Spire. I don't think much of either one, but I got several for $5 each some years back, and used them on XP 2200 to 2400 level, non-Overclocked CPUs. They were quieter than the stock AMD retail coolers, but not a bit better at cooling, in spite of larger fans.