Who says Socket A motherboards don't have temperature protection!

[rogue1979]

I have two 761 chipset boards. The first time was by accident on a DFI AK76-SN. I was man handling some parts around in the case and inadvertantly knocked the heatsink and must have made it lose full contact with the core. All of a sudden the power shut off. I checked the bios on power up and noticed my cpu was at 55c! The thermal shutdown was set at 60c and it worked! On purpose I watched the motherboard monitor on my Epox 8K7A as a pulled off my fan. As soon as the temp cpu temp hit 60c, boom, the board shut down.

So for most fan failures socket A is not a melt down waiting to happen. I am not sure if it would be fast enough to shut down if someone was running Prime95 at max load and the heatsink fell off. Anyone wanna try and report back

 

[Buz2b]

<< I am not sure if it would be fast enough to shut down if someone was running Prime95 at max load and the heatsink fell off. Anyone wanna try and report back >>

Oh yeah! Just as soon as I am through playing my third game of Russian Roulette. First I have to load a couple of more bullets though; the game isn't exciting enough.

 

[CoDerEd]

Not all socket A mobo has it ( I fried my Atlhon 1.2 last year w/ Epox board) eventhough
almost all new Socket A mobo has the feature, some also has feature that shutdown the
mobo when HSF fan is not runing on their minimum limit.

Compare to Intel's Northwood, it has this feature on the CPU, so no matter what mobo
you have it will shut down when the CPU temps reach the ceiling.

I heard next generation Athlon (i'm not sure tbread or hammer)
will have this protection system on their CPU also.

 

[Iron Woode]

My MSI K7T Turbo has it. I set it at 70c, the lowest temp setting available.

My old socket7 board: TX2 gigbyte board has this as well.

It is part of the BIOS.

 

[Derango]

<< Not all socket A mobo has it ( I fried my Atlhon 1.2 last year w/ Epox board) eventhough
almost all new Socket A mobo has the feature, some also has feature that shutdown the
mobo when HSF fan is not runing on their minimum limit.

Compare to Intel's Northwood, it has this feature on the CPU, so no matter what mobo
you have it will shut down when the CPU temps reach the ceiling.

I heard next generation Athlon (i'm not sure tbread or hammer)
will have this protection system on their CPU also. >>



Actualy, I believe the p4 keeps slowing down and dosen't shut down the whole computer. A better solution IMHO.

 

[jiffylube1024]

<<

<< I am not sure if it would be fast enough to shut down if someone was running Prime95 at max load and the heatsink fell off. Anyone wanna try and report back >>

Oh yeah! Just as soon as I am through playing my third game of Russian Roulette. First I have to load a couple of more bullets though; the game isn't exciting enough.

>>



LOL

About the P4: Every Pentium 4 has clock throttling: when the CPU gets *way* overheated (like when the Heatsink falls off) it slows the clock speed of the CPU down to practically nothing, then if the heatsink gets reatached it can set itself back to stock speed. It's the original P3 Coppermine that would freeze/shut itself off if a situation like this occurs.

In reference to your title, "Who says Socket A motherboards don't have temperature protection!", a test was done by Tom's Hardware Guide, and at the time, he couldn't find a Socket A motherboard that supported the feature properly. Since then, some do, but it's still a gamble.

 

[Jeff7]

<---- will just take your word for it at this point.
Yes, the settings are there in BIOS for shutdown in event of a) fan failure and b) overheat, but I don't think I can afford a real-world test in the event of a failure.:Q

 

[Iron Woode]

<<Yes, the settings are there in BIOS for shutdown in event of a) fan failure and b) overheat, but I don't think I can afford a real-world test in the event of a failure.>>

It works, trust me. My one system seriously overheated and then the BIOS shut the PC down. I fixed the problem and it booted up and ran just fine.

 

[serialb]

The problem about majority of socket A board right now is that practically none of them reads the internal thermal diode from the CPU. I honestly don't trust that little probe under the socket.

Hope more board manufacturers like ASUS support that feature.

 

[Mikewarrior2]

I know there are other forum members who would love nothing but believe that motherboards for AMD setups are perfectly fine for thermal protection, but it really isn't true.

Looking at the latest mod article to bring internal diode reading to a socket-thermistor motherboard: HardTEch4U Internal diode mod, let's look at the key numbers.

When the author shut off his water-pump (further simulating unlikely but very possible and catostrophic cooling failiure), the internal didoe numbers shot up to 70-80C, while the socket-thermistor showed 42C. Now, IIRC from my 8kha+, the lowest auto-shutdown temp was either 55 or 60C. Certainly, in this situation, the CPU would easily be fried before any motherboard protection could be implemented.

Yes, motherboard shutdown could save a CPU from fan failure, but this is not something that anyone could reliably depend on. Situations such as a CPU under load(ie HardTEch 4U page) or a heatsink that lacks "extra capacity" for cooling (ie retail heatsink or other popular OEM units), where a fan failure would dramatically raise internal temps at a rate too fast for motherboard protection to kick in.


Mike
P.S. 8kha+ thermal protection is off by default

P.S.2. The HardTech4U follows AMD PDF files for adding internal diode support. From various sources, the Maxim chip really is the way to go if you want internal diode reading yourself, and when properly done (and I believe HardTech4U did a great job) shows great results

 

[tjescher]

Hey,

I have a Soltek DRV-5. The board has the'ABS-II' blah blah. I didn't really think too much at first, believing it to be the same thermistor controlled shutdown, but in reality it does read from the XP thermal Diode, and the new bios reports the xp temp from that under ABSII temp. So the DRV-5 does read from an accurate source and shuts down the pc at a dangerous temp, plus you don't have to mod it to see the temp the processor is at.

Escher

 

[Mikewarrior2]

that's great. You have one of a handful (under 5) motherboards that are currently out and support the internal diode.

How did you determine that you're reading the internal diode, though?



Mike