Temp diff between probe and Mbm5 ???

[Mojo_Cookie]

Hiya !!!!!!

Just got new lian li dual thermometer and was wondering wich is most accurate the probe on lian li or the software mbm5 ?? I got 37° on prob and 46° with software ???

[PsYcO CyBrArIaN]

What does the bios have to say?

It may be that they are using two different sources for their readings and one is less accurate from a mearby heat source in the case or it is just made poorly.

Check Google for some reviews of MBM* and the Lian hardwares quality.

[I.M.O.G.]

Do you place the probe for the lian-li sensor yourself? How did you place it to get a reading?

What is MBM reading from?

If it is reading from an on-die sensor those are known to be very accurate. If it is reading from the insocket thermistor those are notoriously inaccurate.

So if your motherboard and cpu support the on-die reading then that is most accurate. If you are reading from an in-socket thermistor with mbm, it is hard to say how accurate that is. There can be a lot of error involved with placeing a probe yourself and my first guess would be that it would be most inaccurate.

[nerdlogic]

Originally posted by I.M.O.G.
Do you place the probe for the lian-li sensor yourself? How did you place it to get a reading?

What is MBM reading from?

If it is reading from an on-die sensor those are known to be very accurate. If it is reading from the insocket thermistor those are notoriously inaccurate.

So if your motherboard and cpu support the on-die reading then that is most accurate. If you are reading from an in-socket thermistor with mbm, it is hard to say how accurate that is. There can be a lot of error involved with placeing a probe yourself and my first guess would be that it would be most inaccurate.

What is the proper way to place a probe, anyway?

Soy

[I.M.O.G.]

Well, the best way to place a probe, IMHO, is to drill a hole into your block, place the probe inside, then thermal epoxy it there. That way you know exactly what temperature your heatsink is.

Customarily, people often place these probes by sticking them on the base of the heatsink or with the tip of the probe butting up against the die of the cpu. These are not reliable solutions, it is very difficult to judge how well you are getting the reading you want to get, and it is likely that the reading obtained is a composite of the case air temp, cpu temp, and heatsink temp.

[Mojo_Cookie]

Hiya !!!!!!!!!

My prob is right on the side of the cpu i tryed to stick it between cpu and heatsink but the heatsink was not stable so i stick it right on side off the cap, touching both the cap and cpu. And for mbm5 dont have a clue what it is taking temp from, if i look at mbm5 site cpu read from winbond diode maybe will help find out.
Thank !! Oh i just checked bios temp and it around 40° while prob still showing 30° but i read on some post that board have trouble reading temp and generaly probe are prety accurate anyways Thank for the help :p !!!

[texasfit]

Two entirely different readings.

Internal diode vs external probe.

Internal diode is always more accurate than
an external probe and will almost always be higher.

Your readings are really not that far off from most.

[nerdlogic]

Damn...I don't have a way to drill into the HS if I wanted to and I am getting a nexus multipanel (decided to be a guinea pig for it).

Soy

[I.M.O.G.]

There is nothing wrong with placing the probe like you did, a lot of people use their external probes this way.

Just keep in mind that the temperature reading you get is not the cpu temp, it is a composite of all the environment around it that it is in contact with.

IMO, the important thing about temperatures is not the number readings anyways... it's getting familiar with your system and knowing at or around what numbers your system begins to become unstable. Although your temperatures may not be exact, you may still be able to use them as a rough judge to determine how close your cpu is to becomeing unstable.

@nerdlogic: Don't you have a drill where you are? Or have a neighbor who has a drill? All you need is something to securely hold the heatsink, and a hand drill with the correct bit. Should take about 1 minute.

@everyone: Does mojo's board support the on-die diode? Do all Pentiums have the on-die diode? (Sorry, I know nothing about pentiums)

[torchedlh]

i have a ASUS A7A266 and use MBM5 to monitor my temps. how do i know if the cpu temp is reading from the in socket thermistor or onboard diode? is there a way to choose?

[I.M.O.G.]

Originally posted by torchedlh
i have a ASUS A7A266 and use MBM5 to monitor my temps. how do i know if the cpu temp is reading from the in socket thermistor or onboard diode? is there a way to choose?

Read the forum rules. Start your own thread for your own topic. When you ask questions in someone else's thread it distracts from their answers and it can become confusing.

You are new to the forums so I will go ahead and answer you, just keep this in mind in the future. :)

Where your temp is being read from depends on a few things.

You need to find out if your motherboard has an insocket thermistor and if it supports the on-die diode.

You then need to find out if your processor features an on-die diode.

If your components support all these, you then have to configure MBM to read all the sensors correctly. There is a readme file that comes with the MBM download that helps with this configuration I believe. MBM can read the temps on any and all sensors that exist in your system, so everything depends on what sensors your motherboard supports. :)

[ToledoSteel]

Originally posted by I.M.O.G.
Well, the best way to place a probe, IMHO, is to drill a hole into your block, place the probe inside, then thermal epoxy it there. That way you know exactly what temperature your heatsink is.

Customarily, people often place these probes by sticking them on the base of the heatsink or with the tip of the probe butting up against the die of the cpu. These are not reliable solutions, it is very difficult to judge how well you are getting the reading you want to get, and it is likely that the reading obtained is a composite of the case air temp, cpu temp, and heatsink temp.

Does doing this cause a potential problem with conductivity within the HS? And would you drill a hole right over the center of the core, within the heatsink? I have never thought of this, but you have peaked my interest. Do you have a link to a thread or a page with more in-depth info?

*off to scour google*

[modenaf1]

MBM 5 usually tells you exactly what the bios tells you. either that or something like -137 or 423

[torchedlh]

Originally posted by I.M.O.G.


Read the forum rules. Start your own thread for your own topic. When you ask questions in someone else's thread it distracts from their answers and it can become confusing.

You are new to the forums so I will go ahead and answer you, just keep this in mind in the future. :)

Where your temp is being read from depends on a few things.

You need to find out if your motherboard has an insocket thermistor and if it supports the on-die diode.

You then need to find out if your processor features an on-die diode.

If your components support all these, you then have to configure MBM to read all the sensors correctly. There is a readme file that comes with the MBM download that helps with this configuration I believe. MBM can read the temps on any and all sensors that exist in your system, so everything depends on what sensors your motherboard supports. :)

well i'm pretty sure my xp 1600 has an on-board diode. however, i'm not sure if my mobo is capable of reading that diode or where i'd look to figure that out....

[I.M.O.G.]

Originally posted by torchedlh


well i'm pretty sure my xp 1600 has an on-board diode. however, i'm not sure if my mobo is capable of reading that diode or where i'd look to figure that out....

The easiest way for you find out if your mobo can read an on-die diode without doing any work would be to just post the question in the mobo forum. They can answer this for you. :)

Originally posted by ToledoSteel


Does doing this cause a potential problem with conductivity within the HS? And would you drill a hole right over the center of the core, within the heatsink? I have never thought of this, but you have peaked my interest. Do you have a link to a thread or a page with more in-depth info?

*off to scour google*

PM or start a new thread about placing external probes for cpu related readings and I'll come there.

Prefer not to thread hijack. :)

[torchedlh]

alright i will. thanks