a zalman-clone called pentagram (semi flower design, available i alu an cu versions) is sold across europe, costs half the price of a zalman and delivers v nicely. it's been tested against a zalman and since it is identical (really) it has the same performance. when on min rpm it's inaudible, when on max - yes, quite loud but cooling is more than sufficient. mine is a gainward - love gainwards for quality and o/c, but they seem to have the gpu located slightly different from reference versions - be careful with that.