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.
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- 5
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- 79%
- 4
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- 12%
- 3
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- 6%
- 2
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- 1%
- 1
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- 2%
| Product Rating: |
   
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| Total Reviews: |
328 |
Silent or Loud
- Pros: Silent, fairly cheap for what you get. Comes with lots of connection adapters. It actually pushes more air then I was expecting. Have 2 fans on the case and 1 on the processor cooling fins.
- Cons: When you run the fans at 100% or 12volts they are almost impossible to hear. However if you tweek down the voltage to run at slower speed through BIOS or even with a fan controller, the blades do slow down but you are left with an annoying little tick. I can even hear this tick when the case is sealed up and under my desk. So I just run all three fans at 100% and I can't hear them. This happens on all three fans that I ordered.
- Other Thoughts: Do not use these fans with an automatic fan controller. ONLY run these fans at 100% or 12volts all the time or nothing at all. Would definately be 5 eggs if it wasn't for this tick. They push just as much air as cheaper fans but get these ones for the lack of blade noise.
understanding dB additive
- Pros: These are very good fans
- Cons: the sony hype bearings are not that expensive don't see why they make this fan cost more, I think it is marketing.
- Other Thoughts: To clearify adding dB is not by just adding the ammounts of dB.
Decibels (dB) are the logarithmic and have to added together using a-wieght using LOG arithmetic It would be expected if you have two of the same fan and are well in tune, then the increase is minimal. Even fans that are out of tune to each other are not going to add up like a stack linear.
| Model | S-FLEX SFF21E |
| Type | Case Fan |
| Fan Size | 120mm |
| Bearing Type | Fluid Dynamic |
| RPM | <1600 RPM |