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Setting the right temperatures target for my cpu/cpu cooler (msi Z77 thunderbolt mb)

post #1 of 9
Thread Starter 
I have this Msi thunderbolt Z77 mb http://dk.msi.com/product/mb/Z77A-G45-Thunderbolt.html and this cool cpu cooler http://www.thermalright.com/html/products/cpu_cooler/true_spirit_140_bw.html

In my bios i can set the Cpu smart fan target to disable or 40-70 with an increase of 5 degresse and in Msi Control center i can activate CPU Smart Fan Control, but when i reboote or start my pc the next day the rpm again goes up to 100% about 1250 rpm(Cpu Smart Fan Control settings are not saved).

Figured out that the target temperatures is something where the mb,cpu cooler tries to get the cpu to a temperature that i chose (currently 40 degrees) and i can set the min fan speed with an increase of 12.5%, my cpu cooler can run at 50% speed about 550 rpm, even when the rpm are surpose to be with in 900-1300 rpm, i have therefore set it to 50%, then my cpu cooler is very quiet.

Wouldn't it be better to make the temperature target to 50 degrees and still have a min rpm of 50%?

The when i play a game or benchmark it will try to get the temperatures down to 50 degrees which isn't a problem since it a good cpu cooler and a cool i5 3470 cpu (max oc'ed), with normal facebook,youtube use the mb,cpu cooler wil try to get the temperatures up to 50 degrees by lowering the cpu fan speed, since i have set min rpm to 50% it wouldn't go lower in rpm then 50%, 550 rpm, even at those rpm my cpu is about 40 degrees.

Wouldn't that mean that my rpm wil stay at 50%,550 rpm until my room temperature, cpu load or both will increase my cpu temperature to 50 degrees and the start to increes the rpm of my cpu cooler? If taget is 40 degrees the rpm will go above 50%,550rpm when the temperature is only 40 degrees?



Am i right? Is there a better target temperature you would surgest me to set the cpu taget at?
post #2 of 9
This might help:
Quote:
In into BIOS, on settings I went into these:
Advanced" -> "Hardware Monitor" -> "CPU Smart Fan Target

I enabled the CPU Smart Fan target, set the temp to 40 C and min fan speed to 12,5% I think. When Control centre opened, CPU smart Fan Control was enabled, and in the bottom right corner it showed up as "auto".

that means I can now change fan speed according to temp in the smart msi grph tool in controll centre, and all changes will be saved, and it will start with CPU fan on auto always
http://forum-en.msi.com/index.php?topic=165053.0
Google is your friend.wink.gif
post #3 of 9
Thread Starter 
After i set cpu target fan speed to 40 degrees and min fans speed to 50% (os) it seems that it now runs as in the curve in green power in the control center

about 40 degrees and fan at 56 % ( about 900 rpm) which actually is the start of the rpm that the fans are rated at (900-1300 rpm)


So would you recommend me to change it to 45 or 50 so fans go below 900 rpm and temperatures goes up to 45 or 50 (is there a temperature where a cpu runs best, most stable and fast like an engine in a car?)
post #4 of 9
PWM fans will often run slower than their spec'ed speed and that is no problem. If fan is speeding up when you work the CPU / CPU temp rises a little than it working properly. I istarted mine with idle at 660rpm and found motherboard components (Northbridge chip) was running 55c idle and 49c @ 770rpm under load.. not enough airflow at 660rpm idle. Not that 55c is a problem but I raised my idle to 770rpm anyway. wink.gif Still quiet, CPU is same temp as before and now motherboard is cooler.

No temp I know of other than keeping CPU cool. The temperature monitoring at idle is usually not accurate anyway as the sensors are set to be their most accurate in the area where it critical.. at top of temperature range. My 980 tops out at 50c when all 6 cores are processing at 100%.. and fans run @ 950-1050rpm dependent on room temps.. idle temps are room +2-3c.. except for one core that says it's 6c below room temp. biggrin.gif Seems a good balance as it's quiet and cool.

What are your idle and full load temps now?
post #5 of 9
Thread Starter 
My temperatures are 55-56c under prime 95 (max heat, what it is after some hours with prime 95 i don't know) idle i guees is now with the new settings 40 (my cpu target fan settings is 40c)
post #6 of 9
55-56c is nice and cool.

Target temp is when fans start to speed up. Below target the just idle. Sometimes I wish they would stop completely and start again when needed. smile.gif
post #7 of 9
Thread Starter 
Quote:
Originally Posted by doyll View Post

55-56c is nice and cool.

Target temp is when fans start to speed up. Below target the just idle. Sometimes I wish they would stop completely and start again when needed. smile.gif

You also have some, noisy fans (2500 rpm) http://www.tweaktown.com/reviews/5091/thermalright_silver_arrow_sb_e_extreme_cpu_cooler_review/index9.html 69 db that's loud like a wacum cleaner, my ty 140 (true spirit) are impressivly quiet at max rpm although i notice a slightly lower noise level when my fan isn't running at max rpm
post #8 of 9
Quote:
Originally Posted by gasolin View Post


You also have some, noisy fans (2500 rpm) http://www.tweaktown.com/reviews/5091/thermalright_silver_arrow_sb_e_extreme_cpu_cooler_review/index9.html 69 db that's loud like a wacum cleaner, my ty 140 (true spirit) are impressivly quiet at max rpm although i notice a slightly lower noise level when my fan isn't running at max rpm
Common misconception.. Don't have to run 2500rpm just cus it will. Fast fans are like fast cars. They rarely go anywhere near as fast as they are capable of of going. biggrin.gif
TY-143 makes the same noise your TY-140 does at same rpm. biggrin.gif Run the TY-140 at full speed and it's not super quiet either. Trick is our coolers are so good we don't even need to run the fans at even 1300rpm unless overclocked under full load.
post #9 of 9
Thread Starter 
aaahh i see
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