High performance 12cm fan with S-FLOW blades supplying 30% more airflow than a standard fan at the same speed. The greater performance combined with PWM automatic speed control allows the fan noise to be kept to a minimum.

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 enhances noise reduction. Killer Viper yellow color makes this fan distinctive and unique.

Note : Cable comes factory sleeved black, other colors are available in the options below.

• High performance 12cm fan in killer VIPER yellow colour
• S-FLOW fan blade design delivers 30% higher airflow
• Super silent with PWM auto speed control
• Hydro Dynamic Bearing extends fan life up to 50,000 hours

Application:	PC case or heatsink fan
Dimension:	120 X 120 X 25mm
Fan speed:	600 -1900 RPM
Max airflow:	83.63 CFM (141.75 m3/h)
Max static air pressure:	2.98 mm H2O
Noise level:	6.9 -28.9 dB(A)
Current rating:	0.17A
Voltage rating:	12V DC
Bearing:	HDB (Hydro Dynamic)
Fan life expectancy:	50,000 hours
Connector:	4pin PWM
Product code:	AK-FN059

09-15-2014
Reviewer: Ned C. (13)
So the title says it all. My build is black and yellow themed and this was the major yellow color in the case aside from the tubing. The fans are good looking and you can barely hear anything unless it is at full-bore, at which point you probably have surround sound on anyways and you''re just itching to get that headshot.

06-25-2014
Reviewer: Zippy (5)
What else is there to say? Priced right, high cfm, good static pressure, pwm controlled, low power draw, hydro bearing, relatively quiet. Have 5 of these installed into a small Matx tower case cooling 3 ex120 rads. Do a fantastic job. Highly recommended!

03-14-2014
Reviewer: Vinny D (3)
I have never purchased an Akasa fan before and lately fan noise has been getting on my nerves. I was previously using a bunch of Scythe F-SLEX Model-"G" FDB 120mm fans and they are quiet too but I needed to get yellow fans to match my color scheme on my MSI Z87 XPower motherboard. I admit, I was a little worried and it took me a few days to pull the trigger (mainly because it was going to be an expensive purchase since I needed 15 or 16 of these to fit my CaseLabs TH10 case fan mounts and 120.4 (480) Alphacool Monsta radiator. These Vipers MORE THAN DELIVERED! PROS: 1. Inaudible @ 600rpm - 1100rpm 2. From 1100rpm - 1600rpm they''re almost as quiet as 600rpm - 1100rpm 3. MAX speed @ 1900rpm, still the only thing you hear is just the sound of blowing air. There is barely a hint of bearing or motor noise. 4. The PWM speed control is flawless AND quiet. NO annoying ticking noises across the entire RPM range. 5. The 600 - 1900 RPM range is an excellent range of speed. 6. Truthful specs! This is important as a lot of manufacturers "exaggerate" the specs of their fans on the box. CONS: They only come with these ghetto yellow rubber fan mount spikes. I tossed them and used regular fan screws. CONCLUSION: If your build calls for this color, quietness, a large amount of airflow, or you are water cooling and needs high amounts of static pressure, these are amazing performers all around. They''re fast, quiet, look great, blow tons of air, are perfect against radiators, and will cool your components in push/pull or plain case fan configurations. I would not hesitate to buy these again if the need arises.

03-09-2012
Reviewer: thatferrariguy (5)
Have 4 of the 120mm in my case and 1 on the cooler, and a 140mm on top. With them at low speed they''re very quite and produce a nice breeze and when they''re turned up they definitely move some air, but are pretty noisy.

03-08-2012
Reviewer: jns (22)
i have 9 of these in my case. they are whisper quite at idle, and powerful when they need to be. not as loud as i thought they''d be at full blast, but not something i''d want all the time. that''s why you get PWM! i painted a couple of them, and all you do is pull the blades off. you don''t need to remove the sticker on the back or anything.