Need quieter fan for SVC Golden Gate 40! ! !

[WJB05]

I bought a couple of SVC Golden Gate 40s in August and only got around to installing one of them in Nov. They came with Y.S. Tech model NFD126025BB-2F fans that are terribly loude! I am using this heatsink\fan combination on Athlon 1600XP+ processors on Epox 8KHA+ boards. I do not plant to overclock excessively - can someone recommend a quiteter fan to use on the Golden Gate 40? Thanks