Is 49C idle motherboard temps too high? (For TMPIN1)

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himmatsj

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Feb 23, 2014
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I just got a new PSU and GPU. On my older PSU and GPU, when idle, the TMP1 value would be at 43C, but now with the new GPU and PSU, the TMP1 idle value is 49C.

Is this verging on the dangerous?

Old idle value: http://imgur.com/yubBUFD (look at the MIN tab for my idle temp)

New idle value: http://imgur.com/I2lYXK5 (look at the VALUE tab for my idle temp)

As can be seen, not much difference in my CPU temps or fan speed (FANIN1).

Also, my motherboard temps are all similar values, except for TMPIN1 which is 4C higher. I believe TMPIN2 is a sensor for the CPU temps on the motherboard, because they both correlate.

The TMPIN1 temperature seems to be the issue here, because it can get very much higher when under gaming load compared to before. Any idea what TMPIN1 could refer to? If I can find out what motherboard sensor is this, I could try finding a solution.

Also, look at the FANIN2 idle value. From 1100RPM to 1500RPM. Why such a big jump? Can I regulate this in any way? (I think it is the case fan, this reaches 2100RPM when max load gaming, compared to 1600RPM with my 750 SC)

All of this is new for me, so I would appreciate guidance from the more knowing members of this forum.

 
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50c for cpu temp is not good at idle. if your using the intel stock cooler it not down tight or the feet are not locked in. if your using evo or other 3 party cooler make sure you did not over do it on the thermal paste. with a good cooler the temp should be 30-40c and the fan should slow down to 600 rpm. some of the temp sensors may be for mb chipset and or hard drives.
 
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No it is not verging on dangerous. Although a bit high.
Maybe you would want to check the airflow capabilities of your case or improve it somehow. 49°C is the max temperature according to your chart.
Which GPU have you installed?
Yes, you can manipulate fan speeds. That to my knowledge depends on the Motherboard software. Maybe some other softwares as-well. I use the Asus software that came with the motherboard to manage CPU and Chassis Fan Speeds.

Hope this helps.
 
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No my idle CPU temp is 42-44C. Fan speed is 480RPM for the CPU.

Is that more acceptable, or still bad?
 
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Yes, my bad. The idle temps for TMPIN1 is actually 47-49C. The other 4 motherboard sensor temp readings are much lower though.

Do you know what TMPIN1 corresponds too?

Which motherboard temp reading is the most important?
 
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They are a bit high but its ok to operate on these temperatures. I would recommend getting your airflow to be optimised according to your case.
Please try a bit of cable management so that there a no obstructions to the airflow and no dead spots for the air to get stuck in the case and not escape. If done properly Can lead to a drop in Temp by 1-2° C.
Align the CPU cooler with the rear fan which throws the air out of the case. This can be a very effective method to drop the MB and CPU temp by another 2-3°C.
Install another IN Fan at the front or a Out Fan on the top of the case. MAYBE you could try changing the thermal paste on the CPU. Another 4-5°C possibly if the current thermal paste on the CPU Cooler is not applied properly.

In short you should try to get the temps down by using the tricks above. but if you dont succeed then no worries. Your CPU can operate at above 60 also, without much problems.
 
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Ok, but I must point out, my ambient temps are 32-35C at day, 28-30C at night since I live in the tropics. Does this come in to factor?

I do feel the cable management with the new GPU is bad, but this is because there are just so many cables!

I am posting two pictures below, showing the inside of a Dell Inspiron 660 casing at stock/factory/default levels, and then showing the inside of my case currently with the upgraded PSU, GPU and power cables.

Default: http://i42.tinypic.com/2144k5i.jpg

Current: http://i.imgur.com/6LEIkP9.jpg

I don't know where to begin. Some help is appreciated!
 
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I live in New Delhi bro. I mean only deserts on this planet and volcanoes are hotter than this place.
Previously My CPU and MB temps were 42°C idle and 39°C Idle respectively. I tried the steps below to reduce the temps NOW to CPU 35°C idle and MB 33°C idle.

Bro, i have noted a couple of things.
1) Cable management is bad - like you said
2) PSU fan is pointed downwards.
3) Just 1 Out FAN??
4) Stock Cooler? Which CPU is it?

For Cable management : Use ties or anything that you can tie the cable with. Make the cables move along the hard parts of the case. Like the bottom or along the side which mounts the motherboard. You do not want them in the middle of the cabinet. If the power supply is fully modular then adjust the cables you are using. use just the 1 cable for powering the hard drives & CD/DVD Drive. Move the two so they are closer and can be provided power from 1 cable having sockets of 5pin SATA. Certain cables like the mother board power 24 pin cable and pcie 6/8pin cables are hard to bend, so its fine if they come in the middle. But try to run all cables along the sides.

For PSU: Try to move the psu in such a way that the PSU Fan does not directly blow hot air inside the cabinet. Maybe if the top of the cabinet has a fan vent then rotate the PSU to face that vent on top. If you cant rotate the psu or put it in another position then Add another cabinet fan for removing hot air.

Cabinet Fans: Right now you just have 1 out fan in the cabinet from what i can see. Add a new fan to the front of the cabinet if possible. If cabinet has ventilation option in the front (grills for fars in front). if not, maybe double up the fan that you have on the rear. put 2 fans together for throwing the hot air out.

Stock CPU Coolers are pretty much crap and useless. Maybe buy a after market cooler. Or remove the Stock cooler, apply new thermal paste and see the temps drop. This should be the last resort.
Remember "HOT AIR RISES". Hence having the PSU on top throwing hot air down is pretty much everything you are not supposed to do.

Hope this was helpful man. Cheers!
 
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its not wrong, but its just not ideal. Because the hot air from the PSU is coming into the case. Do you understand what i mean. All good cabinets are designed to have a psu location which throws the air out and not inside the cabinet. If you cant Change the location of the psu or get a new cabinet, then do a good cable management job and add a minimum or 1 more cabinet fan, ideally 2. 1 for throwing out hot air and another for pulling in outside cooler air.
 
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Ok, which is less ideal? Mine or the other one? Surely one is better than the other, given we both have the exact same casing.
 
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Both configurations are same from what i can see. I see no difference between the two.
 
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Look at the EVGA logo placement. It is inverted and on the other side.
 
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I did notice that my friend. but from what i can see both PSU have the exhaust fan pointed to the inside of the case.
Since you cant change the placement pf the PSU, i suggest you buy a case fan to properly get rid of the hot air inside your cabinet.
You have 3 sources of hot air inside your cabinet, 1: PSU, 2:CPU, 3:Graphics Card
All 3 have fans which blow hot air.
You do not have enough fans to ventilate the cabinet to get rid of the hot air being produced by these 3 sources.
 
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My bad. You are right in saying that. It is the intake fan. But there is no out fan in PSUs. Hence it does not really work very efficiently in taking out the hot air from the PC.

Top mounted PSU have these Disadvantages:
But that causes the PSU temps to rise.
Makes the computer more noisy.
And Reduces the life of the PC as a whole.
 
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