High performance 14cm fan with S-FLOW blades supplying 30% more airflow than a standard fan at the same speed. Supporting fully automatic PWM speed control, the VIPER-R uses custom design
PWM IC that integrates Soft Switching Commutation (SSC)
technology, provides smooth silent operation.

The Viper fan creates more focused airflow providing blind-spot cooling, which makes it an ideal solution for a case or heatsink fan. HDB (Hydro Dynamic) bearings extend fan life and further enhance noise reduction. Killer Viper yellow colour makes this fan distinctive and unique.

14cm fan blade on 12cm fitting makes it a ideal solution for those who wants more airflow to the heatsink.

Note: This fan measures 145mm but fits on normal 120mm Fan mount patterns!

*Super silent VIPER 14cm fan

• 14cm fan blade on 12cm fan fitting
• S-FLOW fan blade design delivers 30% higher airflow
• PWM with SSC technology provides smooth silent operation
• Hydro Dynamic Bearing extends fan life up to 50,000 hours

Dimension:	145 X 145 X 25mm
Bearing:	HDB (Hydro Dynamic Bearing)
Speed:	600-1600 RPM
Max airflow:	109.55 CFM
Sound level:	7-21.7 dB(A)
Max static air pressure:	2.91 mm-H2O
Rated voltage:	12V
Connector:	PWM-4pin
Product code:	AK-FN073

04-09-2013
Reviewer: Will (2)
Yes this fan does have 100+cfm but the noise level aka db is nowhere near its stated 21db its more like 29-34db. I am using it as a heatsink fan so it might be slightly louder then if you used it as a case fan but still was louder then i expected it to be. If you want a quiet 140mm fan chose the Blue Vortex 140mm its 66cfm at 15-16db.

03-21-2013
Reviewer: Josh (3)
I am preparing a move from my current *TERRIBLE* acrylic case into a CaseLabs S3 Mercury, and I am going to air cool the CPU first, but being as the mITX platforms leave baically NO room for high-quality coolers, I had to go with a smaller than desired Zalman for that task. I have other fans for intake purposes, but I wanted something beefy for exhaust... HOLY DANCING MOSES, this thing moves some serious air. I have this on a rear exhaust port, plugged into a PWM header on a splitter, and managed with Speedfan. Excelent folume, and while I usually run with the case wall open in this rig, I will append more data when I have the new setup going, where the case will be closed 24/7. Also of note; the blades are EXTREMELY strong and thick, IMO an excellent selling point. I dislike thin, weak fan blades, and these are not. A++ product!!!

03-21-2013
Reviewer: Josh (3)
I am preparing a move from my current *TERRIBLE* acrylic case into a CaseLabs S3 Mercury, and I am going to air cool the CPU first, but being as the mITX platforms leave baically NO room for high-quality coolers, I had to go with a smaller than desired Zalman for that task. I have other fans for intake purposes, but I wanted something beefy for exhaust... HOLY DANCING MOSES, this thing moves some serious air. I have this on a rear exhaust port, plugged into a PWM header on a splitter, and managed with Speedfan. Excelent folume, and while I usually run with the case wall open in this rig, I will append more data when I have the new setup going, where the case will be closed 24/7. Also of note; the blades are EXTREMELY strong and thick, IMO an excellent selling point. I dislike thin, weak fan blades, and these are not. A++ product!!!