Among the many traits shared by recent CPU heatsinks, one of the most apparent has been their size. Some of the heatsinks that stand at a forefront for size has been the Thermaltake Beetle (CL-P0086), Coolink BAT1VS, Prime Cooler Hypercool III+ & Hypercool 4+, and Arctic Cooling Freezer 7. In order to comply with 2U chassis specifications, the heatsink remains a mere 68mm tall with a side mounted intake fan. This fan is a simple 60mm fan with 3-pin wire. Unfortunately, this wire lacks the fourth wire for PWM. Although the entire CoolJag HSF base is composed of copper C1020, as with the fins, the frame is aluminum. On the opposite side of the heatsink, the 27 copper fins are clearly visible.
As with the CoolJag JAC84MC, the standard LGA775 Socket T pushpin mounting method wasn’t used. Instead, CoolJag has opted for using these pushpin-mounting holes but using a metal retention plate on the back of the motherboard to support the heatsink. On the bottom of the heatsink, is the large copper base. The base didn’t appear to be in the best condition possible, but did appear to be quite flat. The overall surface was almost mirror-like, as demonstrated with our traditional golf ball reflection experiment.
Although the CoolJag JAC84MC and JAC16EC mount identically, their motherboard retention plate is slightly different. The key difference between the two mounting plates is the use of a double-sided tape. This tape used on the JAC16EC retention plate is to keep the frame in place even while the heatsink isn’t directly attached. This double-sided tape may prove to be useful when swapping processors or changing thermal paste without having to remove the motherboard from the chassis in order to re-align the retention plate with the four push-pin mounting holes. After the frame was aligned in position, we installed the CoolJag CPU cooler without any problems. The heatsink remained clear of any motherboard obstructions due to its 2U low-profile design. Our only grip about the installation process was the use of a 3-pin fan connector rather than 4-pin support.