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Case, Power Supply, Fan Reviews
  Product:     CoolJag JAC565C CPU Cooler  
  Price:     $68 (CAN) / $45 (U.S)
  Supplied By:     CoolJag
  Author:     Shennon
  Date:     July 11th, 2002
  Rating:     star star star star star star star star star

CoolJag JAC565C CPU Cooler
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CoolJag JAC565C CPU Cooler
Click image for larger view
 
The Skiving process will produce thinner fins in a high-density manner, as seen in the picture. This process gives the fins on one side of almost a mirror finish, while the other is rough. The advantage to the rough side is that it will increase the surface area for better heat dispersion.

CoolJag JAC565C CPU Cooler
Click image for larger view
CoolJag JAC565C CPU Cooler
Click image for larger view
 
The installation of the CoolJag JAC565C is a bit more involved than many of the P4 Socket 478 coolers on the market. It involves the removal of the motherboard’s stock retention base in favour of the supplied retention system. This new approach relies on a solid backing bracket and screws to secure it in place instead of plastic push pins. The added advantage the backing plate is that there is minimal deformation to the motherboard, unlike the stock heatsink retention system when used with the stock heatsink. To remove the stock system, simply push out the white nylon pins and squeeze the pins out. The supplied retention system is installed by placing the backing plate against the backside of the motherboard. The retention base is then screwed to the backing plate with the supplied screws.

CoolJag JAC565C CPU Cooler
Click image for larger view
CoolJag JAC565C CPU Cooler
Click image for larger view
 
As a comparison, I decided to test the CoolJac565C against the stock cooler which was supplied with my Pentium 4 system. The system consists of a Pentium 1.6a on an Asus P4B motherboard. For this review, I opted to replace the generic thermal compound with high performance Artic Silver 3. Temperature monitoring will be supplied by Motherboard Monitor 5.1.0.7 and recorded at idle and under load. SiSoftware Sandra Burn-in Utility will be used to put the CPU under load for ten cycles at normal priority. I also overclocked the processor to 2.1 gig and repeated performance tests in overclocked mode. With the exception of the load temperatures, there was a consistent drop in the readings. There would have been a greater difference between the two, but the stock cooler was not to stock specs and the thermal compound was changed from the traditional thermal tape to the superior Arctic Silver 3.
 
Conclusion:

The CoolJag JAC565C did managed to produce some respectable results as an overclockers recommended cooler. The retention system is superior to the stock and if for any reason you have to change the heatsink, most replacements will not adapt to it easily. The powerful 70mm fan may require more juice than most standard motherboards can supply, therefore one may want to rewire the power and ground to a molex connector and run directly from the power supply. The noise level generated by this configuration is extremely high, so if you sleep in the same room as your computer, a sound dampening solution may be required. In addition, there was not a fan grill supplied to protect straying fingers, as I believe we all have had little accidents with spinning blades. These negative points are very minor, but does offer some room to improve the heatsink to suit your own specific tastes. I would classify the CoolJag JAC565c as a mid-level to high performer; and rate this product a 8.5 out of 10. If you have any questions regarding this review be sure to visit the CoolJag website for more information or discuss them in our forums.

Thumbs Up! Pros:
  • Utilizes the latest Skiving technology
  • High performance 70mm fan
  • Ease of Installation
  • Copper construction
Thumbs Down! Cons:
  • Non-standard retention system
  • Loud fan
  • No protective fan grill included
  • Powerful fan may be too much for motherboard
  • Generic thermal compound included

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