78LMT-S2P mobo & X4 965 cpu Where exactly is TMPIN2 Temp Sensor?

[petspy]

while stress testing in my 3.8ghz OC running prime95 and heaven3 at the same time
all the gpu cpu hdd temp sensors remain in the mid 50's celsius with the case closed.

while using CPUID Hardware Monitor with EasyTune6 Core Boost Disabled

TMPIN0 tops out at 33c and TMPIN1 at 58c but TMPIN2 can spike as high
as 72c which may not harm anything, but concerns me if I can reach that
spot with more airflow - only I have no idea exactly where it actually is

I even skimmed through the user manual, and it makes no mention of these.

[Vezina]

Your topic should go to OC section.

What are the temps when you are running stock clock ?
What CPU cooler are you running ?!
I think that the temp you are seeing is the CPU VRM area sensor ,it shows that the VRM fights more to deliver the amps the CPU needs.
If it s the first version of P2X4 965 BE (140W TDP) i would stop with the over-clocking on this motherboard to avoid smoke.

[petspy]

thanks, but i don't mean to discuss OC'ing here,

simply the location of the sensor in question - TMPIN2.

"CPU VRM area sensor"  precisely where physically is this "VRM area"

and no, it's the later 125w CPU.  non stressed everything runs under 40c

[Vezina]

It s somewhere between the back panel outputs and the CPU socket most probable.
Make sure the cooler blows air in that area.
You can check the temps of the CPU radiator and chipset heatsink with your finger If you can keep your finger on them you are ok

The VRM area should be ok at least until it gets to 85 Clesius.If the board has thermal protection it should shut down ,make sure thermal protection is enabled  in BIOS

[petspy]

so basically that's an inaccessible area?  the CPU fan blows across not down.  if i had a down blowing fan would that matter?  or is this sensor under the CPU socket, so any new airflow would be blocked regardless.  I have alarm software and thermal protection set at 70c for both GPU and CPU - if temps get that high it probably means a fan is not working properly. but thanks to you i'll know not to worry about TMPIN2 till it's flirting with 80c 

[Vezina]

What CPU cooler are you using ?!


LE:Are you able to make a print screen of all the HW Monitor readings ?!

[petspy]

i doubt my properly installed Cooler Master Hyper 612 PWM has issues with a TMPIN2 sensor



thanks for your time and interest posting, but maybe a manufacture poster could tell me where.
i'll make a separate thread under overclocking about more specifics once i'm sure it's all stable,
so i can share with other builders what seems to work well with my mobo:cpu:ram combination.

[Vezina]

Keep in mind that the air goes thru the fins directly towards the back case fan.There is air flowing over there ,but not directly to the VRM area where you can see those tiny black things.Your motherboard VRM has only a 3+1 design and no heatsink i wouldn t play with more overclocking.
The CPU cooler on the other hand , in spite of the heaviness ,should be ok CPU temperatures wise.

[petspy]

where PRECISELY is this place you keep talking about? are VRM those 4 black rectangles below the dozen square MOSFETs?

I would think the dozen high current carrying MOSFET themselves need the heat sinks, not those 4 black ceramic bricks.

however, i have revision 5.0 of this board, and instead of those thick MOSFET there are thin flat cool "lower rds" mosfet.

[Vezina]

however, i have revision 5.0 of this board, and instead of those thick MOSFET there are thin flat cool "lower rds" mosfet.

In this case you should be safer.
Yes ,those 11 squares in the picture , near the 4 grey blocks , near the 12V power connector are mosfets.

[petspy]

here's revision 5 with the flat mosfet - but i still don't know where the sensor is  



here's a picture of a DIY mosfet cooler installed on another gigabyte board;



http://www.newegg.com/Product/Product.aspx?Item=N82E16835708016

 

[Vezina]

here's revision 5 with the flat mosfet - but i still don't know where the sensor is  

It s somewhere in the area
It could be a small resistor connected to the ITE chip.

[petspy]

Anyone else following this thread (i tweeted gigabyte - got no responce);

http://www.newegg.com/Product/Product.aspx?Item=N82E16835100013

after removing the sticky pad under the sink with a razor and rubbing alcohol

use the above epoxy sparingly to permanently attach the sink to the mosfets.

at a total cost of $25uds, i don't think it's worth lowering that sensors by 5c on

a mobo that only cost me $35usd, so i'm shelving this DIY for the time being as

i only get >70c while running prime95 - normally the temp hovers around 60C.