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Square copper heatsink with black radial blower fan, 84 by 84 by 28 millimetres, pack of 36

CoolJag

CoolJag DEN-7 1U radial blower heatsink LGA1155/1156 36pcs laptop replacement part

SKU CH-8DNC-GX6EK MPN DEN-7

A 1U radial blower heatsink for Intel Xeon 3400 Series and Core i7, i5, i3 LGA1155/1156 sockets, supplied in a pack of 36 new units

  • 36-piece pack supplies spare coolers for multiple systems
  • Copper base and Shin-Etsu pad transfer heat from Xeon 3400 and Core i7/i5/i3 CPUs
  • 1U radial blower fits 84 mm square server layouts
  • Dual ball-bearing fan runs 1000 to 5500 rpm with PWM control
  • Airflow scales 1.93 to 11.83 CFM at 18 to 51 dBA

36-piece radial blower heatsink pack

This pack contains thirty-six new CoolJag DEN-7 radial blower heatsinks, each built for Intel Xeon 3400 Series and Core i7, i5, i3 processors using LGA 1156, 1155 or 1150 sockets. The copper base measures 84 mm by 84 mm with a 28 mm stack height and weighs 382 grams. A Shin-Etsu PCS-TC-11 thermal pad is pre-applied, and the integrated 75 mm PWM fan runs on 12 V via a 4-pin connector.

Repair shops and bulk system integrators

The pack suits repair shops and integrators who service multiple compatible workstations or servers and want a single SKU for repeated CPU cooler replacements. It is not for buyers who need only one unit, who require a different socket or mounting pattern, or who need a cooler rated for higher thermal loads than this 1U design provides.

1U radial blower with 5500 rpm peak

The defining specification is the 1U radial blower that spins from 1000 to 5500 rpm, delivering 1.93 to 11.83 CFM and 0.38 to 20.66 mmH₂O static pressure while drawing 1.2 to 9.6 W. This airflow envelope determines whether the cooler fits the thermal and acoustic limits of the target chassis.

Highlights

  • 36-piece pack supplies spare coolers for multiple systems
  • Copper base and Shin-Etsu pad transfer heat from Xeon 3400 and Core i7/i5/i3 CPUs
  • 1U radial blower fits 84 mm square server layouts
  • Dual ball-bearing fan runs 1000 to 5500 rpm with PWM control
  • Airflow scales 1.93 to 11.83 CFM at 18 to 51 dBA

Specifications

BrandCooljag
ModelDEN-7

Questions about this item

What does the 5500 rpm top speed mean when the heatsink is installed in a 1U server?

At 5500 rpm the 75 mm dual-ball-bearing blower moves up to 11.83 CFM and generates 20.66 mmH2O static pressure, enough to push air through the copper fin stack in a 28 mm tall 1U chassis.

How does the 4-pin PWM connector control the fan in practice?

The 4-pin header carries 12 V power, ground, a tachometer signal and a PWM line, letting the motherboard vary speed between 1000 and 5500 rpm based on CPU temperature.

Will the 84 mm square base fit my LGA1155 narrow-ILM motherboard?

The heatsink measures 84 mm by 84 mm and mounts on the standard 75 mm hole pattern used by Intel Xeon 3400 series and Core i7, i5, i3 sockets 1156, 1155 and 1150.

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