NEW PRODUCT SPEC SHEET
Model Number: K987
• Recommend for Intel® CPU as following
o Socket LGA1156, Core™ i5 Processor
Series up to 2.93GHz ; Core™ i7 Processors
o Socket LGA1366, Core™ i7 Processors
5500 Series up to 3.06GHz
o Socket LGA775, Intel® Core™2 Extreme Processor 2.93GHz ; Core™2 Quad
Processor up to 3.0GHz ; Core™2 Duo Desktop Processor up to 3.33GHz ; Pentium® D
Processor up to 3.6GHz ; Pentium® Processor for Desktop up to 2.93GHz ; Pentium® 4
Processors up to 3.80 GHz ; Pentium® 4 Processor Extreme Edition up to 3.73 GHz ;
Celeron® Processor up to 3.6GHz
I5-750 2.66GHz ; Xeon® Processor 3400
I7-900 Series 2.66GHz ; Xeon® Processor
• Active Cooler for 3U Server & Up
Overall Specification:
• Dimension: 106.0 x 106.0 x 72.6mm
• Weight: 500g
• Material: Aluminum Radial fin Heat Sink with Copper Inserted
• 9225 Round Fan Top-Down Blowing
I7-800 Series up to 2.93GHz
• Screw-on Retention are available for all Intel® Sockets
• Screw Sets Bag Included
• Finger Guard Protection
• Back Strip Sets / Plate are available for all Intel® Sockets
• TIG830SP Thermal Grease Syringe Included
Fan Specification:
• Dimension: Ø92.0 x 25.0 mm
• Bearing: Single-Ball
• Rated Voltage: 12V
• Rated Speed:
o At Duty Cycle 0~20%: 900 RPM
o At Duty Cycle 50%: 1700 RPM
o At Duty Cycle 100%: 2800 RPM
• Rated Input Power:
o At Duty Cycle 0~20%: 0.72 W
o At Duty Cycle 50%: 1.2 W
o At Duty Cycle 100%: 3.0 W
• Rated Airflow:
o At Duty Cycle 0~20%: 15.1 CFM
o At Duty Cycle 50%: 30.9 CFM
o At Duty Cycle 100%: 46.96 CFM
• Rated Static Pressure:
o At Duty Cycle 0~20%: 0.30 mm-H
o At Duty Cycle 50%: 1.55 mm-H
o At Duty Cycle 100%: 2.977 mm-H
O
2
O
2
O
2
• Rated Acoustical Noise:
o At Duty Cycle 0~20%: 14.0 dBA
o At Duty Cycle 50%: 19.0 dBA
o At Duty Cycle 100%: 29.30 dBA
• Lead Wire Pin Out:
o Pin#1-Black(-)
o Pin#2- Yellow(+)
o Pin#3- Green(Tachometer/ Signal Output)
o Pin#4- Blue (PWM)
Performance Chart, K987 Thermal Resistance & Noise VS. Cooling Fan Speed
0.33
0.331
29
0.31
Ther mal Resistance (°c/ w )
0.29
0.27
0.25
0.28
0.255
2500 2000 1500 1000
Fan S peed (RPM)
0.305
24
19
Noi se L evel (dBA)
14
R-th
Noise
2