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Variable Cooling Capacity: Coolermaster HAC-V81 X-Dream

A Comparison of 34 Coolers for the AMD Athlon XP
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With its X-Dream, Coolermaster has embarked on a new course. Based on the motto "high performance, but only where necessary," this model was equipped with an adjustable ventilator that can be controlled via a potentiometer.

The potentiometer can be screwed onto the slot plate that comes with the cooler and can be inserted into an unoccupied PCI slot. Depending on the potentiometer setting and the power requirement, the ventilator rotates at speeds of between 2800 and 4500 rpm. The noise level varies accordingly, between 49 dB(A) and 65dB(A).

Inserted into the base of the aluminum heat sink is a solid copper core that serves to conduct away the heat as quickly as possible from the hot region above the die towards the heat sink. Depending on the ventilator speed, the thermal resistance of the X-Dream varies between 0.46 °C/W and 0.37 °C/W. The maximum die temperature of the Athlon XP 2400+ CPU used in the test stood at 50° Celsius at the lowest. At the lowest possible ventilator speed, temperatures of 55° Celsius were achieved.

Also worth mentioning is the ergonomic triple clip of the VAC-81, which makes it possible to install the unit easily without the use of tools. Those who opt for the VAC-81 should check beforehand whether there is sufficient space around the processor socket. Measuring 80 x 84 x 84 millimeters, this cooler counts among the more bulky candidates.

Summary
  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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