Enermax Products

Enermax Logo
Enermax Technology Corporation is a designer and manufacturer of switching power supplies, PC cooling solutions, PC cases, and PC peripherals. Founded in 1990, Enermax was the first company who introduced computer power supply units (PSU) to the retail market with their FMA series. Enermax is headquartered in Taoyuan, Taiwan with subsidiaries in the USA, France, Italy, Germany, Japan and China. For a full list of specs, features, FAQs and more please consult the Enermax website (http://www.enermax.com)


Enermax T.B. Vegas Duo UCTVD14A
Enermax TB Silence UCTB14

Enermax T.B. Silence Fixed RPM UCTB14 140mm Fan


Brand Enermax
Series T.B. Silence – Fixed RPM
Model ID UCTB14
Type Case Fan
Bearing Type Twister
Fan Size (Dimension) 140mm (139 x 139 x 25mm)
Power Connector 3 pin
Voltage, Current, Power 12V, 0.15A, 1.8W
Color Black Frame, Smoked Transparent Fan
Corner Type Open
Rotational Speed 750 RPM
Airflow 77.14 m3/h, 45.4 CFM
Noise 15 db(A)
Static Pressure 0.882 mmH2O
Warranty 1 year
Accessory 1 x 3-pin to 4-pin Molex Adapter.
4 x Fan Screws


The ENERMAX TB SILENCE PC case fan raises the bar high in computer cooling with unbeatable thermal performance and optimized acoustics. Its uniquely designed Turbine Blades work together with Twister Bearing technology delivering performance cooling and low-noise profile. The detachable blade design makes cleaning job a snap.


  • Performance cooling with a low-noise profile.
  • Twister Bearing technology for longer lifetime and low noise.
  • Batwing Blades design and Carved Halo Frame for extra 20~30% airflow (for Batwing fan blades)
  • Patented Modular Frame with aluminum ring for enhanced stability of structure
  • Detachable fan blades for easy cleaning


Noctua Products

Noctua Logo
Designed in Austria, Noctua’s premium cooling components are internationally renowned for their superb quietness, exceptional performance and thoroughgoing quality. Having received more than 3000 awards and recommendations from leading hardware websites and magazines, Noctua’s fans and heatsinks are chosen by more than a hundred thousand satisfied customers around the globe. For a full list of specs, features, FAQs and more please consult the Noctua website (http://www.noctua.at)


140mm/14cm Fan
120mm/12cm Fan
90mm/9cm Fan
NF-A9x14 PWM
80mm/8cm Fan
60mm/6cm Fan
NF-A6x25 FLX
40mm/4cm Fan
NF-A4x10 FLX

Thermal Compound


CPU Coolers (Workstation and Servers)

NH-U12DO A3 – For AMD Opteron (Socket G34, C32, F)
NH-U12DX i4 – For Intel Xeon LGA2011 (Square ILM & Narrow ILM), LGA1356, LGA1366
NH-U9DO A3 – For AMD Opteron (Socket G34, C32, F)
NH-U9DX i4 – For Intel Xeon LGA2011 (Square ILM & Narrow ILM), LGA1356, LGA1366

CPU Coolers (Retail)

NH-D14 SE2011
NH-C12P SE14

CPU Mounting Kit for Retail CPU Coolers

NM-A90 Upgrade-Kit (AMD socket AM2/AM2+/AM3)
NM-i115x Mounting-Kit (Intel LGA115x, LGA1150, LGA1155, LGA1156 socket)
NM-I2011 Mounting-Kit (Intel’s LGA2011 socket for Core i7 39xx/38xx processors)

Noctua Naming Schemes

NF = Noctua Fan
NM = Noctua Mount
NH = Noctua Heatsink
NH-C = Noctua Heatsink (C Shape, horizontal radiator)
NH-U = Noctua Heatsink (U Shape, vertical radiator)
NH-L = Noctua Heatsink (Low Profile, size similar to Intel Heatsink)
NF-F = Focused Flow
NF-A = Air Flow (Case fan)
NF-S = Silence (Aimed at nothing but silence)
NF-P = Pressure
NF-R = Raised blade
NF-B = Beveled blade

Noctua Terminologies

Customisable for industry clients
For industry clients, various features, certificates, packaging options and accessories can be customised on requests. For example, we can provide 24V versions, different connectors and speeds, different cable length or UL and TÜV certification. Please feel free to contact us for customised offers!

How to delete System Folder in Windows 7

Below are step by step guide on how to delete folder which are locked under “SYSTEM” privileges instead of the PC admin.

Phase 1 – Taking ownership

  1. Right click folder
  2. Select “properties”
  3. Select the “security” tab
  4. Click the ‘Advanced” button
  5. Select the “owner” tab
  6. Click the “Edit” button
  7. Under ‘change owner to’ highlight the user you wish to set as owner
  8. Check the ‘replace owner on subcontainers and objects’ box
  9. Click the ‘apply’ button (this will take you back to the ‘advanced security settings’ window)

Phase 2 – Permissions

Once you are back in the ‘advanced security settings’ window follow these instructions (Note: You MAY have to close out the properties window altogether and then re-open it for the above changes to take effect before performing the next set of steps).

  1. Select the ‘permissions’ tab
  2. Click the “Change permissions” button
  3. Highlight the user you need to change permissions for
  4. Click the ‘edit’ button
  5. Check “allow” box next to full control
  6. Click “Ok”
  7. Check the box next to “include inheritabl permissions from this object’s parent”
  8. Check the box next to “replace all child object permissioms with inheritable permissions from this object”
  9. Click “apply”
  10. Click “yes” in the pop up box”
  11. Click “OK” to close permissions window
  12. Click “Ok” to close advanced security settings window
  13. Click “ok” to close the properties window
  14. You should now be able to delete the un-deletable folder.

Phase 3 (it is a shared folder)

Be sure to do the following steps :

  1. Properties
  2. Sharing tab
  3. Share … Be sure you have your user with read/write Permission level
  4. Come back, Advanced sharing
  5. Permissions be sure your user is here with Full Control

Noctua NF-A15 PWM 140mm Fan Benchmark


Brand Noctua
Series NF-A (Airflow)
Model ID NF-A15 PWM
Type High-end CPU Fan
Bearing Type SSO2
Fan Size (Dimension) 140mm (140 x 150 x 25mm)
Power Connector 4 pin
Voltage, Current, Power 12V, 0.1A, 1.2W
Color Beige Frame, Brown Fan Blade
Corner Type Open
Performance Fan with L.N.A with U.L.N.A
Rotational Speed (RPM) 1200 900
Airflow (CFM) 68 52
Noise (db) 19.2 13.8
Static Pressure (mmH2O) 1.51 0.89
Warranty 6 years
Accessory 1 x Low-Noise Adaptor ( L.N.A)
1 x 4 Pin Y-Cable
1 x 30cm Extension Cable
4 x Rubber Grommets
4 x Fan Screws

Noctua NF-A15 PWM 140mm Fan


Benchmark Push Pull Push/Pull
Delta Temperature (C) 54.55 55.10 52.45
Noise Levels (db) 33.8 37.3 38.5
Noise + Temperature 88.35 92.40 90.95
Avg.CPU/Ambient Temp (C) 78.25 / 23.7 79.00 / 23.9 76.25 / 23.8
Min~Max Speed (RPM) 1255~1270 1250~1260 1270~1305
Benchmark (L.N.A.) Push Pull Push/Pull
Delta Temperature (C) 57.55 59.35 54.20
Noise Levels (db) 28.1 30.3 30.6
Noise + Temperature 85.65 89.65 84.80
Avg.CPU/Ambient Temp (C) 81.25 / 23.7 83.25 / 23.9 78.00 / 23.8
Min~Max Speed (RPM) 915~925 900~905 920~940


The NF-A15 is a premium quality quiet 140mm fan with a round frame that complies with Noctua’s AAO (Advanced Acoustic Optimisation) standard. The NF-A15’s frame features 120mm mounting holes (105mm spacing) and has been enlarged to 150mm width in order to provide superior performance on today’s high-end CPU coolers. Featuring sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A15 further improves the renowned quiet cooling performance of the award-winning NF-P14. Noctua’s custom designed PWM IC for fully automatic speed control and reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, a Low-Noise Adaptor and 6 years manufacturer’s warranty, the NF-A15 is a premium choice for the highest demands.


  • Succeeding the award-winning NF-P14: Noctua’s NF-P14 fan has become a default-choice among PC enthusiasts looking for a premium quality quiet 140mm fan. Thanks to its thoroughgoing aerodynamic optimisations, the NF-A15/14 provides higher static pressure and an even better airflow/noise ratio than its much acclaimed predecessor.
  • Round 140mm frame with 150mm width: The NF-A15 is tailor-made for use on today’s high-end CPU coolers: While its 150mm width matches those of most high-end heatsinks, its 140mm height doesn’t make it extend on top and thus ensures best case compatibility. The NF-A15’s standard 120mm mounting holes (105mm spacing) also make it an ideal performance upgrade for 120mm case or CPU fans.
  • Flow Acceleration Channels: The NF-A15 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
  • AAO Frame: Noctua’s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua’s proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan’s performance/noise efficiency.
  • Stepped Inlet Design Stepped Inlet Design: Noctua’s Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space restricted environments.
  • Inner Surface Microstructures: With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.
  • Integrated Anti-Vibration Pads:Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.
  • SSO2 Bearing: The NF-A15 features the further optimised second generation of Noctua’s renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.
  • Metal bearing shell: In order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, the NF-A15 sports a CNC milled bearing shell made entirely from brass.
  • Custom designed PWM IC with SCD: Supporting fully automatic PWM speed control, the NF-A15 PWM uses Noctua’s novel, custom designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at low speeds.
  • Low-Noise Adaptor: The NF-A15 PWM is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1200 to 900rpm. The L.N.A can be used either to run the fan at a fixed speed of 900rpm or to cap the maximum speed when using automatic PWM control.
  • Extensive Cabling Options: The fan’s short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows to connect a second NF-A15 PWM fan to the same PWM fan header for automatic control.
  • Ultra-Low Power Consumption: Despite of its further improved performance, the NF-A15 PWM consumes only 0.96W of power, which amounts to a reduction of about 20% as compared to its predecessor. This doesn’t only make it eco-friendly but also helps to cut down the electricity bill!
  • 6 years manufacturer’s warranty: Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A15 features an MTBF of more than 150.000 hours rating and comes with a full 6 years manufacturer’s warranty.

List of Fan Bearing Types

Enermax: Twister Bearing Technology (patented)

  • Quiet: Persistent low noise level.
  • Minimal contact area: For an effective noise reduction.
  • Rotor with integrated magnet: For a frictionless and smooth motion.
  • Self-lubricating bearing sleeve: Abrasion protection for a longer lifetime.
  • Longer life: up to 100.000 hours MTBF.
  • Others: Magnetized steel ball. Self-lubricating nano bearing. Coils. Flexible magnets inside the rotor.

Noctua: Self-Stabilising Oil-pressure Bearing (SSO bearing)

Thanks to an optimised principle of operation, the self-stabilising oil-pressure bearing (SSO bearing) surpasses current types of ball, sleeve or liquid bearings in terms of long-term stability and quietness.

  • SSO Principle of Operation: The rotary motion of the axis generates pressure upon the special oil enclosed within the bearing. This causes the build-up of a dynamic pressure field that centres and stabilises the axis within the bearing shell. While conventional liquid bearings employ the principle of hydrodynamic pressure too, the SSO bearing is equipped with an additional magnet that supports the self-stabilisation of the rotor axis. This allows for a faster, more precise and more reliable centring of the rotor axis and thus increases the long-term stability and quietness of the bearing: When the fan starts, the dynamic pressure field of the liquid bearing needs to build up first, which results in an initial precession of the axis, the so called gyro effect. This amounts to an increased abrasion until the axis is stabilised through the build-up of the dynamic pressure field, which may by and by lead to increased noise emission and bearing defects. Because of this, the SSO bearing possesses a built in magnet, whose field ensures the immediate self-stabilisation of the rotor and hence reduces the gyro effect. In addition to the stabilisation during the start-up phase of the fan, the supporting magnet allows for a more exact centring of the axis within the bearing shell and thus further reduces bearing resistance, abrasion and noise emission.
  • SSO compared to conventional sleeve and ball bearings: The sleeve and ball bearings currently predominating the fan market exhibit major drawbacks: While conventional sleeve bearings initially have very low noise emissions, they mostly possess unsatisfying long-term stability, which leads to a short overall lifespan and increasing noise after longer operating times. High grade ball bearings, on the other hand, while providing satisfying long-term stability operate at slightly higher noise levels from the beginning. The SSO bearing not only surpasses the quietness of conventional sleeve bearings but also the long-term stability of current top-of-the-line ball bearings.
  • Noctua NF-P14 FLX 140mm Fan Benchmark

    Noctua NF-P14 FLX 140mm Fan Review

    Following in the footsteps of the successful NF-P12, the NF-P14 is a highly optimised, premium quality 140mm fan with Vortex-Control Notches for superb quietness and outstanding aerodynamic efficiency. Metal reinforcements, SCD2 technology and Noctua’s premium grade SSO-Bearing guarantee exceptional running smoothness and excellent long-term stability. Using the same hole-spacing as common 120mm fans and achieving a superior airflow/noise ratio, the NF-P14 is ideal for upgrading 120mm CPU or case fans. Product discontinued. Successor model: NF-A15 PWM


    Brand Noctua
    Series NF-P (Pressure)
    Model ID NF-P14 FLX
    Type Case Fan
    Bearing Type SSO
    Fan Size (Dimension) 140mm (140 x 140 x 25mm)
    Power Connector 3 pin
    Voltage, Current, Power 12V, 0.1A, 1.2W
    Color Beige Frame, Brown Fan Blade
    LED N/A
    Corner Type Open
    Cable Length 41cm
    Performance Fan with L.N.A. with U.L.N.A.
    Rotational Speed (RPM) 1200 900 750
    Airflow (CFM) 65 49 42
    Noise (db) 19.6 13.2 10.1
    Static Pressure (mmH2O) 1.29 0.77 0.53
    Warranty 6 years
    Accessory 1 x Ultra-Low-Noise-Adapter (U.L.N.A.)
    1 x Low-Noise-Adapter (L.N.A.)
    1 x 3-pin to 4-pin Molex Adapter.
    4 x 140mm Mounting Brackets.
    4 x Rubber Grommets
    4 x Fan Screws

    Benchmark #1 : Efficiency vs Performance

    Test done in a wind tunnel without any airflow restriction (grill/mesh-filter).

    Volts Ampere RPM CFM Decibel (A) Pressure mmH2O
    0 0 0 0 0 0
    1 0 0 0 0 0
    2 0 0 0 0 0
    3 0 0 0 0 0
    4 0 0 0 0 0
    5 0 0 0 0 0
    6 0 0 0 0 0
    7 0.06 685 41.0 12.2 318
    8 0.07 785 47.1 14.7 445
    9 0.08 880 51.7 16.7 635
    10 0.09 984 57.8 18.4 826
    11 0.10 1053 61.0 20.3 1016
    12 0.11 1135 64.4 22.5 1334

    Benchmark #2 : Heatsink Cooling

    Test done by cooling heatsink in push, pull and push-pull configuration.

    Benchmark Push Pull Push/Pull
    Delta Temperature (C) 54.4 55.65 51.90
    Noise Levels (db) 38.5 38.5 42.6
    Noise + Temperature 92.9 94.15 94.5
    Avg.CPU/Ambient Temp (C) 81.00 / 26.6 82.25 / 26.6 78.50 / 26.6
    Min~Max Speed (RPM) 1120~1180 1125~1280 1110~1230
    Benchmark (L.N.A.) Push Pull Push/Pull
    Delta Temperature (C) 58.9 59.35 55
    Noise Levels (db) 30.5 32.8 34.8
    Noise + Temperature 89.4 92.15 89.8
    Avg.CPU/Ambient Temp (C) 85.50 / 26.6 85.75 / 26.4 81.50 / 26.5
    Min~Max Speed (RPM) 775~800 960~965 760~940
    Benchmark (U.L.N.A.) Push Pull Push/Pull
    Delta Temperature (C) 63 61.85 57.25
    Noise Levels (db) 28.6 29.8 32.5
    Noise + Temperature 91.6 91.65 89.75
    Avg.CPU/Ambient Temp (C) 85.50 / 26.6 85.75 / 26.4 81.50 / 26.5
    Min~Max Speed (RPM) 645~665 835~840 620~850