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Item#: N82E16835185005

Scythe S-FLEX SFF21E 120mm Case Fan

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  • 120mm
  • 1200 RPM 49.0 CFM
  • S-FDB (Fluid Dynamic Bearing by SONY Corporation)

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The fan is the air conditioner of the case. To make your computer cool, you need a high performance fan. Equipped with S-FDB (SONY Fluid Dynamic Bearing), the Scythe S-FLEX SFF21E delivers class leading low-noise level, outstanding air flow as well as a long life of 150,000 hours.

This fan will function efficiently whether used as a CPU cooler fan, a PSU fan or a chassis cooling fan. A clever combination of efficiency and silence, the Scythe S-FLEX SFF21E will keep your system running cool without sounding like a jet engine.

  • newegg S-FDB Bearing The Scythe S-FLEX SFF21E features SONY Fluid Dynamic Bearing (S-FDB) to delivers enhanced airflow, low operating noise level and up to 150,000 hours MTBF (Mean Time Between Failure).
  • newegg 3- to 4-pin Power Adapter Included The Scythe S-FLEX SFF21E comes with a 3- to 4-pin power adapter so you can power the fan from a 4-pin Molex connector on your power supply.

Learn more about the Scythe USA S-FLEX SFF21E

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Scythe USA S-FLEX SFF21E

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  • Luis S.
  • 9/8/2015 3:29:09 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsPurchased on 2005 and still kicking....

Pros: Just removed this fan from my third build and going to my fourth one. It is ten years old and has been working every week without failure. It is the longest lasting computer part I have ever own. Move great amount of air and very silent. I had used it with and without air filters. Just removed some dust and like new again.

Cons: None

Other Thoughts: Amazing.

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  • Anonymous
  • 8/14/2014 1:33:09 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs  7 years and still strong

Pros: I grabbed one of these for my first PC build in 2007 and the thing is still chugging along today in 2014 with no problems. It's quiet, moves the air well, durable, and clearly lasts.

Cons: No cool LEDs?

Other Thoughts: I'm surprised these are still sold. It must be testament to its quality.

Did you find this review helpful? Yes No

  • John H.
  • 3/16/2014 3:51:27 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsI am a new scythe fan fan

Pros: Silent and efficient, can't ask for more than that.

Cons: Scythe fans have gotten expensive... because they're awesome.

Did you find this review helpful? Yes No

  • Rudy A.
  • 6/28/2013 5:09:30 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsHolyCow

Pros: Still works, bought it back in 11-7-2009

Cons: It has all kinds of lint and dead spiders on it.

Other Thoughts: So I just got done installing a 240mm radiator for watercooling and I used this fan to push air into my case, its so very silent, which still holds true today, fan has an ecosystem of its own, been killing spiders in 2009.

Did you find this review helpful? Yes No

  • Joshua C.
  • 2/3/2012 9:44:31 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsExcellent Fan!

Pros: QUIET! Moves good air. Fluid bearings - no rattling ball bearings here! Still going strong after three years.

Cons: Only 3-pin, so my motherboard can't adjust its speed. Not much of a Con because of how quiet they are!

Other Thoughts: Loaded three of these into my super-quiet PC build. Can barely hear them in there, even at full speed. I've slept beside the PC while it's on! The system has done several 24/7 runs as a backup server and the fans are still running great, silent, and keeping my system cool!

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  • Jerry C.
  • 12/29/2011 9:30:49 AM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsFan

Pros: Moves a lot of air. pretty quiet but not silent.

Cons: None

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  • John H.
  • 7/11/2011 10:11:14 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Efficient, quiet, well balanced.
Totally worth the little bit extra, i am
now going to buy scythe fans exclusively.

Cons: this fan does not make me sexier...

0 out of 1 people found this review helpful. Did you? Yes No

  • Cory R.
  • 5/7/2011 7:21:07 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsVery Impressed

Pros: This is an EXTREMELY quiet fan. It moves a fairly decent amount of air. Very happy with purchase.

Cons: A little pricey but you definitely get your moneys worth if your looking to build a quiet machine.

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  • Anonymous
  • 5/3/2011 11:58:19 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWorks very good but not as quiet as advertised

Pros: They move a TON of air and the build quality is very good.

Cons: They don't seem nearly as quiet as they are advertised.

Other Thoughts: I'd give these fans 4.5 eggs if it was an option. Still fairly quiet and I think I hear the air moving more than the actual fans themselves.

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  • ryan p.
  • 4/24/2011 5:46:21 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsMove That Air!

Pros: As described! These babies move some air!
Very quiet, but not silent (expected).
Good price point for 120mm fan that does what it says.

Cons: Nada

Other Thoughts: Put two of these bad boys on the side panel of my full tower gaming rig...Completed my long awaited negative pressure air flow system. All five of my case fans are
Scythe Brand...and for good reason. They work like a charm at dropping and holding my temps. Thanks Scythe!!

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Home > 
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Fans & PC Cooling > 
Case Fans > 
Scythe USA > 
Item#: N82E16835185005
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