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Topic Title: Phenom 1055t stock fan speed
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Created On: 02/18/2011 01:33 PM
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 02/18/2011 01:33 PM
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francisg3
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I have an Asus M4A785 mobtherboard paired with an AMD Phenom 1055t processor. My CPU fan is constantly running at 3500 RPM. I don't use Smart Q Fan control, cool n' quiet is on, C1E is off and I don't use Asus' EPU-4 engine. Is there a problem with letting the fan ran at this speed constantly or should I regulate the fan speed? Also, should I consider turning C1E on?

Thanks.

Edited: 02/18/2011 at 02:14 PM by francisg3
 02/18/2011 02:51 PM
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NemesisChild
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That is normal RPM for the stock AMD fan, why are you concerned about it?

The fan has a heat sensor that will increase the RPM's as the CPU temp rises, it can reach well over 5000 RPM's.

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 04/09/2011 12:37 AM
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zeus27
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i recently bought a Asus M4a88t m usb3 along with amd phenom x6 1055t and my stock fan records a whooping 6150rpm and its damned noisy any solution to this???? is this normal m kind of worried can anyone help me???
 04/09/2011 02:46 PM
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RBR
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Yikes. A few things come to mind.
Enable Smart Q Fan with Cool N' Quiet.
Get better airflow in your case.
Get an aftermarket heatsink fan.

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 04/09/2011 07:13 PM
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cnchang
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Mine is Asus M4A78T-E. I agree to RBR's suggestion - "Enable Smart Q Fan with Cool N' Quiet". Make sure that your fans are either DC or PWM capable.

With a Cooler Master Hyper212 CPU fan on hand, in BIOS I must choose "DC-control" instead of "PWM" in the Q-fan option so the fan speed can be regulated. I also need to choose "Optimal" or "Silent" mode instead of "Performance" so that fan won't constantly run at its top speed; by the way, this CM Hyper 212's 12cm fan's highest speed is around 1950RPM. With this settings on, both CPU fan and case fan will drop to inaudible 900~1100 RPM in the Silent mode when idle. When CPU constantly runs under moderate workload, the fans run at around 1.1K to 1.2K RPM to keep CPU and MB temp around 25~40C. When stressed with 64-bit Prime95 v25.11 Blend Torture Test and completed with Self-test 1024K passed, CPU cores peaked at 52C, MB at 40C with 1.3K RPM CPU/case fan, ambient 21C. It is Cool and Quiet and I never need to add the optional second fan on Hyper212. So, it is literally a Hyper112 now.

Make sure you build a good wind tunnel in your case. Try to bundle and manage your wires to surround inside the case. Your front fan, CPU fan, and rear fan should be well aligned and wind-direction-checked so the intake cool air from the lower front travels slightly upward through your case and finally brought out as hot air from the upper rear end.

Edited: 04/09/2011 at 08:21 PM by cnchang
 04/10/2011 11:24 AM
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cnchang
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One more thing can be tried for a cooler CPU, so less fan speed will be needed. That is the CPU voltage.

My M4A78T-E will set it floating between 0.925V and 1.3V by default when I turn Cool'n'Quiet ON. 20 minutes Prime95 Blend Torture test will send my 955BE to the max 52C from the idle 29C(ambient 22C). But, with some manual tweaking on CPU voltage to 1.15V will cut the measured max temperature to 46C in the same Prime95 test environment.

If you prefer an even cooler CPU, then check this out. When I turned off QFan and let 120mm fans run full speed at ~1950RPM, the Prime95 Blend Torture test max temp will stay at around 41C with ambient 22C. MB temp peaked at 37C. That's cooler but not pin dropping quiet.

But, you have to test your mobo to find your lowest Prime95-stable CPU voltage. Enjoy your journey of quest!

Edited: 04/10/2011 at 11:38 PM by cnchang
 04/11/2011 04:35 AM
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zeus27
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@ RBR and cnchang

I use a cooler master elite 430 with 3 exhaust fans with a cooler master 600w smps and HD 5770 xfx card i have the smart q fan enabled not only that i have set the temp for min to 30degrees and 70 degrees yet on loads while playing a game it runs @ 6150-6400 rpm i started to get very tensed by this my proccessor temp min is 37 degrees and max goes upto 57degrees on load...is this all normal or should i get my processor and fan changed...
 04/11/2011 11:51 AM
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cnchang
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Originally posted by: zeus27
i have the smart q fan enabled not only that i have set the temp for min to 30degrees and 70 degrees yet on loads while playing a game it runs @ 6150-6400 rpm i started to get very tensed by this my proccessor temp min is 37 degrees and max goes upto 57degrees on load...is this all normal or should i get my processor and fan changed...


Not sure what you mean by saying "i have set the temp for min to 30degrees and 70 degrees".
What is your QFan mode? Performance, Optimal, or Silent?
What software do you use to monitor fan speed and temperature?
What are your measured idle/load CPU/MB temperatures(with ambient) and fan speeds?
What are your measured idle/load CPU/NB voltages?
 04/12/2011 08:34 AM
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zeus27
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What is your QFan mode? Performance, Optimal, or Silent?
ans: my bios doesnt give me that option it ha only two options enable and disable..
when enable the smart q fan it allows to set max temp for full speed for fan and min temp for normal speed

What software do you use to monitor fan speed and temperature?

HWMonitor
What are your measured idle/load CPU/MB temperatures(with ambient) and fan speeds?

MBD idle 41 degrees Load 47degrees
CPU idle 33 degrees Load 57 degrees
Fan Speed idle 4500rpm Load 6150 rpm
What are your measured idle/load CPU/NB voltages?

Voltages i did not check sorry
 04/12/2011 02:32 PM
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cnchang
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Are you using DC or PWM for fan control in BIOS? Is your CPU stock fan 3-pin or 4-pin? Are you sure that you are reading CPU fan speed not from another fan?

I suggest collecting your CPU VCore from HWMonitor for both idle and heavy load. If possible, check CPU core freq and NB freq/voltage by using AMD OverDrive Utility. See if something is obviously wrong.
 04/13/2011 12:41 AM
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zeus27
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@cnchang all the above details i have provided is from HWmonitor reasdings...
My fan is a PWM....my stock fan is 4pin...
And m very sure m not reading cpu fan speed from any other fan as i have setached all other fans to conclude its the stock fan...

And as u suggested I will check the NB freq/voltage by using AMD overdrive an see if something is wrong there...
 04/15/2011 12:59 AM
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zeus27
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Finally i have a got a solution i updated Bios disabled my Smart Q Fan and activated EPU ,change the thermal paste and reduced the coltage of the cpu to 1.3v from 1.42v which is the stock settings for Pehnom x6 1055t ,redone my cabinet air in flow and bam!!!! the rpm drops down to 3500rpm on load and idle goes quitely to 2300rpm .....with a drop in temp by -5C to -6C .... I guess this should be tried but users having the same problem!!!
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