Author Topic: Asus Q-Fan control - to enable or not?  (Read 5026 times)

Offline dta

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Asus Q-Fan control - to enable or not?
« on: March 11, 2013, 12:34:50 PM »
Many motherboards feature some form of fan-speed control, eg. Asus Q-Fan control (BIOS or via utility). Gigabyte and MSI motherboards also have has that feature (named differently).
 
Some are also controllable via SpeedFan (or similar utility).
 
 
Just wondering, what setting do you usually use for your CPU fans -- do you have this "Smart Fan" control enabled?  (Asus Q-Fan can be set to Optimal / Silent / Performance, depending on which revision of Q-Fan).
 
With lower fan CPU fan speed, the CPU stays a bit warmer than when the CPU fan is always at full fan speed.
 
Also, does having the fan @ full fan speed shorten the life of the fan (but can possibly slightly prolong the life of the CPU since it stays a bit cooler).
 
This is using the stock Intel CPU cooler. Let's say  if the normal usage environment is generally pretty light (eg. MS Office like tasks, and not CPU-intensive nor gaming tasks).
 
What if different usage environment, what would you generally use? (enable the Q-Fan control or leave it disabled)?
 
 
Q-Fan (or other "Smart-Fan control") disabled:
+ good for CPU: fan @ 100% fan speed, CPU temperature possibly slightly lower, and thus can possibly prolong CPU life
- not so good for casing: more dust gets sucked in since fan is always at 100% fan speed  (not in an enclosed/aircon room)
- not so good for fan: fan life may be shortened since it's always running at full speed, also more dust may attach to the fan assembly, which can also affect the fan mechanism if not regularly cleaned
 
Q-Fan (or other "Smart-Fan control") enabled:
+ good for fan: fan's life may be prolonged since it's not always working at 100% speed
+ good for casing: the casing may be slightly less dusty since the fan is spinning weaker and sucks in less dust particles
- not so good for CPU: CPU stays at a slightly higher temperature

Online bravoexo

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Re: Asus Q-Fan control - to enable or not?
« Reply #1 on: March 11, 2013, 03:13:42 PM »
I only need the fan speed reading for the pumps on my system.  Otherwise I control all the fans I have with a fan bus controller up front.
i7-3770k, GA-Z77X-UP5 TH, Dominator Platinum 16Gb DDR3 1866 C9, GTX ASUS ROG Strix 1080 SLI, Crucial M4 mSATA 256Gb, Crucia MX100-512Gb SSD, Spinpoint F1 1Tb x 2, Barracuda 2Tb Green x 3, LG E2442V x 3, GMX 2.1, HAF-932, M2 850W, MCP355, Apogee GTZ, BlackIce GTX360, G502, AVerMedia LGX, Vantec Dock

Offline juke

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Re: Asus Q-Fan control - to enable or not?
« Reply #2 on: March 11, 2013, 03:57:53 PM »
I use 100% power all the time. But if I'd control them, I'll use a hardware fan controller. It's safer to know that your fans are properly controlled than your fan app crashing and your fan runs on its own, or not run at all.
i5-3570k / Thermalright Ultra-120 Extreme
Asrock z77 Extreme6
G-Skill ECO 2x2GB + 2x4GB DDR3-12800 1.35v
Palit Jetstream GTX680 2GB
Seagate 10GB+
LG H620N 18x SATA DVD-RW
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Coolermaster Cosmos S
Asus VG278H 120Hz 3D
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Online bravoexo

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Re: Asus Q-Fan control - to enable or not?
« Reply #3 on: March 11, 2013, 04:11:21 PM »
I did watch JJ of Asus demonstrate those new fan control w/ their Z77V's mobo...quite interesting.  Full PWM all headers sila.  Gigabyte only has two ata that are full PWM...
i7-3770k, GA-Z77X-UP5 TH, Dominator Platinum 16Gb DDR3 1866 C9, GTX ASUS ROG Strix 1080 SLI, Crucial M4 mSATA 256Gb, Crucia MX100-512Gb SSD, Spinpoint F1 1Tb x 2, Barracuda 2Tb Green x 3, LG E2442V x 3, GMX 2.1, HAF-932, M2 850W, MCP355, Apogee GTZ, BlackIce GTX360, G502, AVerMedia LGX, Vantec Dock

Offline juke

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Re: Asus Q-Fan control - to enable or not?
« Reply #4 on: March 11, 2013, 04:40:10 PM »
^What's the amperage of the fans attached?
i5-3570k / Thermalright Ultra-120 Extreme
Asrock z77 Extreme6
G-Skill ECO 2x2GB + 2x4GB DDR3-12800 1.35v
Palit Jetstream GTX680 2GB
Seagate 10GB+
LG H620N 18x SATA DVD-RW
Corsair HX620W psu
Coolermaster Cosmos S
Asus VG278H 120Hz 3D
Logitech G15 v2
Logitech MX518