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Heatsink USA1.8"Heatsink USA2.08"Heatsink USA3.5"Heatsink USA3.945"
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Cost per inch$0.66Cost per inch$0.32Cost per inch$1.15Cost per inch$3.27
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Weight LBS per inch0.1Weight LBS per inch0.04Weight LBS per inch0.15Weight LBS per inch0.4
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Fin spacing0.35Fin spacing0.185Fin spacing0.429Fin spacing0.4
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# of Fins6.00# of Fins12.00# of Fins8.00# of Fins10.00
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Fin Height0.95Fin Height0.36Fin Height0.75Fin Height2.50
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Riser height0.30Riser height0.10Riser height0.30Riser height0.38
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Width (across profile)1.80Width (across profile)2.08Width (across profile)3.50Width (across profile)3.95
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Length (fin length)6.00Length (fin length)6.00Length (fin length)6.00Length (fin length)6.00
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Perim15.60Perim13.09Perim19.60Perim58.64
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Surface Area in²94.68Surface Area in²78.95Surface Area in²119.70Surface Area in²354.80
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Surface Area cm²610.84Surface Area cm²509.34Surface Area cm²772.26Surface Area cm²2,289.02
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Weight total LBS0.60Weight total LBS0.24Weight total LBS0.90Weight total LBS2.40
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Cost total$3.96Cost total$1.92Cost total$6.90Cost total$19.62
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cm²/$154.25cm²/$265.28cm²/$111.92cm²/$116.67
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Watts of HEAT for passive cooling (120cm²)5.09Watts of HEAT for passive cooling (140cm²)3.64Watts of HEAT for passive cooling (120cm²)6.44Watts of HEAT for passive coolingN/A
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Watts of HEAT for active cooling (40cm²)15.27Watts of HEAT for active cooling (40cm²)12.73Watts of HEAT for active cooling (40cm²)19.31Watts of HEAT for active cooling (40cm²)57.23
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thin basepassive friendly
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very cheap surface areaexpensivetall thick fins
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OK for monosprovides good spreadextra thick base
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1.8 to 3.945
4.23 to 4.9
5.375 to 7.28
8.46 to 12