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Noisy Or Quiet: From 38 To 73 DB(A)

A Comparison of 34 Coolers for the AMD Athlon XP

The noise level of the tested fans varies according to the model, from an extremely quiet, barely audible 38 dB(A) (which can be compared to a loud whisper) up to an annoying 67 dB(A) (loud talking).

To compare the noise of the fans, you should go by the following rules of thumb: twice the volume is equivalent to an increase in the noise level of 10 dB(A); four times the volume is therefore equivalent to an increase in the noise level of 20 dB(A); differences of 1 dB are virtually inaudible, while differences of 3 dB(A) are clearly noticeable.

Please note that the measurements were taken at a constant ambient noise level of 34dB(A) with the housing opened, at a distance of approximately 35 centimeters from the fan wheel. Consequently, the levels will be considerably lower than our results when the housing is in place.

Hot Or Cold: Thermal Resistance Is Decisive

The thermal resistance is the decisive value in this test. It is the measure for the cooler's performance capacity . It is calculated from the processor's power loss ratings PV , the die temperature TD and the surrounding temperature TA , according to the following formula:

Rtherm =(TD -TA )/PV in °C/W

The die temperature is an operand only. Its value during the test is influenced to a great extent by the CPU's power loss rating and can vary greatly, even with similarly rated clock speeds. "Our" Athlon-XP 2400+ scored a maximum power loss of 57 Watts. According to the data sheet, however, the Athlon-XP 2400+ can devour up to 68 Watts. If you were to operate these two 2400+-CPUs using the same cooler, with a thermal resistance of, say, 0.5°C/W, the die temperature of the THG 2400+-CPU would be around 5.5°C cooler.

  1. 34 Alternatives To The AMD Boxed Cooler
  2. Theory: The Optimum Cooler
  3. Thermal Interface: Pad Or Paste
  4. Measure Like The Professionals: Measuring Temperature At The Die
  5. The Coolers In Depth
  6. MF018-021
  7. AVC Co. Ltd.: 112C81 And Z6M330 Frost
  8. AVC Z6M330
  9. Coolermaster CP5-7JD1B-0L & HAC-V81-X-Dream
  10. Variable Cooling Capacity: Coolermaster HAC-V81 X-Dream
  11. Cooljag JVC652A
  12. Fanner: Spire Cu King II (5E070B1H3G) & Falcon Rock (5F271B1M3)
  13. Athlon XP Under The Rock: Falcon Rock (5F271B1M3)
  14. Global Win Technology: Cooling Towers CAK4-86, CAK4-88T & TAK58
  15. Large, Heavy And Temperature-Regulated: CAK4-88T
  16. As Quiet As A Whisper And Simple To Mount: TAK58
  17. Inconspicuous But Effective: Neng Tyi's KNO2 And KNO1
  18. Lighter, Smaller And Weaker: KN01
  19. Pentalpha APSK0168-B, APSK0181-C & APSK0181-L
  20. The Performer: APSK0181-C
  21. The Quiet One: APSK0181-L
  22. Springspread/ Neolec Vento III & Unique2800
  23. Installation Guide In The Lid: Unique2800
  24. A German Quality Product: EKL 20704101059
  25. Variable Cooler Monster For Overclockers: Swiftech MCX462-U
  26. Very Loud And Very Powerful: MCX462-U+VANTEC Tornado
  27. Easy Upgrading: Taisol CGK760098 & CGK760172
  28. Good Performance And As Quiet As A Whisper: CGK760098
  29. New-Age Volcanoes: Thermaltake Volcano 9 & Volcano 7+
  30. Manual Or Automatic: Volcano 9+
  31. Battle Of The Titans: TTC-CU5 TB & TTC-D5T(F/CU35)
  32. Good Cooling Performance But Loud: TTC-D5T
  33. Unusually Bad But Extremely Quiet: TTC-D5 TB
  34. Innovative And Very Well-Performing: Vantec Aeroflow VA4-C7040
  35. Brand-New: Molex 37256-0005
  36. Regulated Or Not: Four Tiger Electronics
  37. Heavier, Quieter And With Better Cooling Performance: Miprocool II
  38. Lighter, Smaller, But With More Cooling Power: SDC38130BC
  39. Heavy But Zippy: Dragonfly-P2B
  40. Noisy Or Quiet: From 38 To 73 DB(A)
  41. Technical Data: 34 Coolers In Comparison
  42. Conclusion: Not Much Innovation In The Cooler Market
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