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Asus Motherboard Temp Problem

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Hey guys/gals, I built the below system last night for a friend.

Asus Maximus Formula X38
Intel E6850 (Stock Settings)
Crucial Ballistix DDR2 800 (2 Gigs)
Western Digital Carviar SE16 500 Gig HD
Evga Superclocked 8800GT 512 Mb

All this was put in a Cool Master RC-690 Case


After installing xp SP2 and all the Drivers I open up Asus Probe II and get a warning the MB is to hot.

It says the CPU was 22°C and the MB is 32°C.


I am thinking that Asus probe is incorrect and maybe reversing the temps but I wanted to see if anyone else knows of any issues with Asus Probe II or if I need to look into RMAing the MB or something else.

We ran a few games and benchmarks and everything ran great. Got a 12000+ in 3dmark06

Had a cap of 60 in Oblivion, Bioshock, and Stalker on 1440 x 900 res with everything on ultra high. Would not go higher but never went below so I just believe there is a command we need to run to raise the fps in those games.

Thanks for your help in advance

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Cap of 60 means that Vsync is turned on under your graphics settings.It syncs the framerate to the refresh rate of your monitor. Asus Probe is most likely wrong.Try Core Temp or Speedfan.

cfvh600 said:
Cap of 60 means that Vsync is turned on under your graphics settings.It syncs the framerate to the refresh rate of your monitor. Asus Probe is most likely wrong.Try Core Temp or Speedfan.


Thanks on the options on cor temp.

After i hit submit i realized that vsync was on and that was why it was capping at 60 I was just so tired last night i didnt eventhink of it.

Thank you for the help I will try it this weekend.

One thing you must know is that when our mobo gets 32-35C or 97F that there will be some resistance between the mobo's 24pin main connector and the senser on the mobo which reads CPU Vcore and other temperature related sensers. I thought I was having a PSU/voltage regulation problem because my rails were way off, so I grabbed a DVM and checked right at the main mobo connector and my rails were all within spec. Way different reading than in bios.
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I am getting MB temps @ 35C too and I don't understand what your talking about, please explain. Basically, I'm running a very cool running case with great CPU temps on a Q6700 w/ a Zalman 9700LED Heatsink/Fan. My case is a Lian-Li A16B with 120mm fans. Also running a Seasonic 700w M12 Power Supply and everything appears to be fine and stable but PC Probe II says my MB temp is over the threshold of 30C.

BIOS reads 34-35C for MB temp too. Is that too high for an X38 P5E??? Do I have a bad board or defective MB Cooling installation?

Please advise

My mobo temp right now is at 35C and thats with one 120mm fan pointed right at the mobo. If it were summer here it would be another story, these X38 chipsets run on the hot side when compared to the P35 chipset. Are you overclocked right now? I'm running @ 3.2GHz from at stock of 2.4GHz, Do you have your Northbridge Vcore voltage in BIOS set to [AUTO]? I recommend even if your system is not overclocked set the Vcores (CPU, Northbridge, FSB volts) to there stock or lowest value. At 3.2GHz my Northbridge Vcore is at 1.41v, CPU Vcore 1.33v.


For X38 chipsets


By systemlord at 2007-12-17



Xbit Labs Asus P5E X38 chipset review. http://www.xbitlabs.com/articles/mainboards/display/asus-p5e.html

Thanks for the reply, I am not overclocked at all yet. I was going to do a mild OC with a 9x333 CPU/FSB to 3GHz.

I do have the voltage set to "AUTO" along with almost everything else. I haven't changed any values like that yet.

My MB had a very slight bow downward right where the Firewire port is and I was wondering if that might have effected the mounting of the MB HS but everything looked securely connected (especially on the NB) so I doubt thats it.

I'll try setting those Values manually to see if it helps. What is an acceptable temperature range for a None OC Q6700? Also, the MB Temp sensor is just the "North Bridge" Chip right?

Thanks again for the advice ~

Ok, so I used Everest Ultimate to check the voltages at "AUTO" and they are running low (No Overclock)

CPU = 1.22 (37C Maxed out with all 4 Cores Stressed)
NB = 1.25v (45C Maxed out !!!)

I was running (2) copies of MEM Test and a DX Shader Demo to tax my 8800GTS (512) Card. The Video Card got to about 76-78C while running an the demo which added to ambient heat but still the CPU was only sitting at about 35-37C during everything.

The MB temperature went to 45C !!! during this stress test. That is just too damn hot! I believe I have a defective MB but what do you think? If I do, I need to RMA asap!

Please advise ~

zillatech88 said:
Ok, so I used Everest Ultimate to check the voltages at "AUTO" and they are running low (No Overclock)

CPU = 1.22 (37C Maxed out with all 4 Cores Stressed)
NB = 1.25v (45C Maxed out !!!)

I was running (2) copies of MEM Test and a DX Shader Demo to tax my 8800GTS (512) Card. The Video Card got to about 76-78C while running an the demo which added to ambient heat but still the CPU was only sitting at about 35-37C during everything.

The MB temperature went to 45C !!! during this stress test. That is just too damn hot! I believe I have a defective MB but what do you think? If I do, I need to RMA asap!

Please advise ~



No, your temperatures are fine, those Quad core temps fully stressed at 37C is great. These X38's are going to run hotter than your average mobo, why do you think Asus put such a massive heatsink on it? Running a Quad core will aways run the mobo hotter than those running a duel core because you have two extra cores to feed.

Your 45C mobo temp was when you were stressing you system to the max, what do you think its supposed to run cold? Go buy two 40-60mm fans and place them on top of your NB heatsink. You need to make sure that your "CPU PLL voltage" is set as low as you can get it. :) 

I stressed everything again doing the following:

(2) Copies of MEM TEST
(2) Copies of Orthos
"Rthdribl" Shader Demo (1280x1024, Detailed Maps, 8x Sampling)

System was completely maxed for about 45 Minutes (100% Stable) and the MB temp got to 46C. but not any higher. It seems the Video card really adds ambient heat to that area.

Thanks for the reply, I do plan on upping my back case fan to a 1600rpm unit (its about 1200rpm now) so that might help too. I guess I'll just keep it for a while and see how things go. I may try the fans too & I'll check the "CPU PPLL" Voltage as well.

BTW, what is your "MB" Temp. when your system is maxed out and running for a while? Is that 35C @ "Idle" or "Stressed"?

zillatech88 said:
I stressed everything again doing the following:

(2) Copies of MEM TEST
(2) Copies of Orthos
"Rthdribl" Shader Demo (1280x1024, Detailed Maps, 8x Sampling)

System was completely maxed for about 45 Minutes (100% Stable) and the MB temp got to 46C. but not any higher. It seems the Video card really adds ambient heat to that area.

Thanks for the reply, I do plan on upping my back case fan to a 1600rpm unit (its about 1200rpm now) so that might help too. I guess I'll just keep it for a while and see how things go. I may try the fans too & I'll check the "CPU PPLL" Voltage as well.

BTW, what is your "MB" Temp. when your system is maxed out and running for a while? Is that 35C @ "Idle" or "Stressed"?


35C idle and 38C stressed, and yes getting a faster rear case (the faster the better) fan will help you out a lot. The reason why my temps are lower then yours is because I have three 120mm fan in toward the rear of my case with one 120mm fan for intaking cool air.



By systemlord at 2007-12-07

So, I think everything is fine now because upon further testing, the NB usually stays about 38C, its just the ambient temps rising from the my 8800GTS 512 (idles @ 60C, which is totally normal). My Zalman is blowing out the back so the NB never gets any direct air but it doesn't seem to be bothering anything.

BTW, I have successfully (& very easily) overclocked to 3GHz (9x333) w/ CPU Core Voltage @ 1.256 (in Windows w/ CPU-Z). I now have a QX6850, w/ 4GB of DDR-1002 running smooth as silk :) 

CPU temps never go above 40C (completely maxed) and idle @ 27C. 100% Stable & not a single problem.

Windows Vista Index score of 5.9 :) , I'm testing out Vista 64 for a week or two. Thanks for the help Systemlord ~

My System Specs:

Intel Q6700 @ (9x333), Zalman 9700LED
ASUS P5E Motherboard
EVGA 8800GTS (512)
4GB (2x2) DDR2-1000 G.Skill RAM
Seasonic M12 700W Power Supply
SONY/NEC SATA DVD Burner
Lian-li A16B Case w/ Window
2x150GB WD Raptor “X” Drives
Sound Blaster X-Fi
Klipsch ProMedia 5.1 Ultra Speakers
22” Mitsubishi Diamond Pro 2070SB

3DMark2006 Score = 13,621
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