Question about CPU overtemp shutdown

Escape Your Mind · 10-27-2001, 09:07 PM

I just one quick question. Ive seen how fast a t-bird can do up in smokes, so say my fan or pump stops working would the cpu overtemp curcuit shut the compter off in time before it starts smoking, and dieing?

warp_zero · 10-28-2001, 03:31 AM

look into MBM5's SHDN stuff... that does auto-shutdown if you need it, there are also some hardware solutions, but extremely complicated

Butcher · 10-29-2001, 09:45 AM

If your fan dies by the time mbm shuts you down it's probably toast, unless you have some decent airflow from case fans / blowholes.

As for pump you have more margin for error as it takes longer to heat the water in a water block.

Best solution is a hardware solution, they're actually pretty damn simple if you have a grasp of basic electronic. You should be able to get the parts for a couple of bucks, if that.

Sled_Dog · 10-29-2001, 03:13 PM

If you have a Athlon XP and a compatible board it will do it itself. And a fan dieing will not kill your chip like BAM that its it. I mean it won't happen instantly. I ran my CPU without my pump on for a while ones and got this result

New Athlon XPs have a built in system that shuts them down. I think a shutdown proggy should work if you set it up right and all.

dantheman · 10-29-2001, 03:29 PM

You are crazy. I would never do that

Butcher · 10-30-2001, 04:33 AM

Yeah but tom's hardware guide showed a vid of an athlon XP suddenly losing a heatsink and it went up in smoke. Draw what conclusions you will from that.
Also 210F is waaay too hot for a cpu.

10-30-2001, 06:10 AM

and then AMD released a vid of it not doing so. On today's slashdot front page theres a link to a THG article which details what happened. Basically AMD built a separate shutdown circuit (the blinking light in their vid.)

Escape Your Mind · 11-01-2001, 07:14 PM

Ya thats the vid that i saw.. was at toms hardware of them playing i think ut, removing hs and blam.. up in smokes.. but now that it think about it.. if the pump fails i still do have the heatsink suckin up heat so it would probably rise fast but not like 40c - 1000c =) instantly. But i mean i dont know if i wanna go the software route.. i mean id love to be 1337 and build something like that... i love building stuff.. but i hate software and programming (ewwww)

11-01-2001, 08:22 PM

Actually I believe most motherboards will shutdown when they detect the chip gets too hot, the reason that didnt happen in the THG article was the mobo didnt detect it.

MBM5 will do fine as long as the HS doesnt pop off. The only scenario I see is if you have really bad airflow and it melts like 30seconds after the fan dies, or something goes wrong during the shutdown and it doesnt shut down.

Escape Your Mind · 11-01-2001, 08:45 PM

Hehehe well i think we established that it probably would work, hardware or software way, as long as your hs doesnt pop off and crash into your vid card (BAD). But its more a matter of bragging rights now, so if i sucessfully build it, while im talking with my nerdy friends from comp sci and they say, i just made a program to shut my comp down, i can say.. well i just soldered some shit together and it shuts my comp down. Ahhh, the amount of competition between us is bad, the only thing we talk about is whos comp ownz who, and whos gonna get their ass kicked in q3 later. Anyway, thanks for you guys's help i think i might looks more closely at thoes schematics and see if i can throw something like it together.

11-01-2001, 09:20 PM

one last idea... if your mobo uses a Winbond HM chip it probably has a 'temp alarm' pin. Depending on the mobo this may or may not do anything. You could hook it up to throw a relay wired to the power switch... shut it right down.

Butcher · 11-02-2001, 05:21 AM

I wired up a small board that basically completely shuts off mains power to the box if the heat is over, it's pretty effective and the circuit isn't actually that hard.

10-27-2001, 09:07 PM	#1
Escape Your Mind Cooling Neophyte Join Date: Oct 2001 Location: Houston Posts: 5	Question about CPU overtemp shutdown I just one quick question. Ive seen how fast a t-bird can do up in smokes, so say my fan or pump stops working would the cpu overtemp curcuit shut the compter off in time before it starts smoking, and dieing? __________________ "One of these days my hs will just pop right off and fall onto my gf3, what a horrible day that will be"

10-28-2001, 03:31 AM	#2
warp_zero Cooling Neophyte Join Date: Apr 2001 Location: A.D. 2101 Posts: 65	look into MBM5's SHDN stuff... that does auto-shutdown if you need it, there are also some hardware solutions, but extremely complicated __________________ sub_light@yahoo.com long live TRAAM-II

10-29-2001, 09:45 AM	#3
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	If your fan dies by the time mbm shuts you down it's probably toast, unless you have some decent airflow from case fans / blowholes. As for pump you have more margin for error as it takes longer to heat the water in a water block. Best solution is a hardware solution, they're actually pretty damn simple if you have a grasp of basic electronic. You should be able to get the parts for a couple of bucks, if that. __________________ Once upon a time, in a land far far away...

10-29-2001, 03:13 PM	#4
Sled_Dog Cooling Savant Join Date: Jul 2001 Location: Snowyland(not Alaska) Posts: 238	If you have a Athlon XP and a compatible board it will do it itself. And a fan dieing will not kill your chip like BAM that its it. I mean it won't happen instantly. I ran my CPU without my pump on for a while ones and got this result New Athlon XPs have a built in system that shuts them down. I think a shutdown proggy should work if you set it up right and all. __________________ pro/chat has a website now? wow

10-30-2001, 04:33 AM	#6
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Yeah but tom's hardware guide showed a vid of an athlon XP suddenly losing a heatsink and it went up in smoke. Draw what conclusions you will from that. Also 210F is waaay too hot for a cpu. __________________ Once upon a time, in a land far far away...

10-29-2001, 03:29 PM	#5
dantheman Cooling Savant Join Date: Jun 2001 Posts: 152	You are crazy. I would never do that

10-30-2001, 06:10 AM	#7
IronHelix Guest Posts: n/a	and then AMD released a vid of it not doing so. On today's slashdot front page theres a link to a THG article which details what happened. Basically AMD built a separate shutdown circuit (the blinking light in their vid.)

11-01-2001, 07:14 PM	#8
Escape Your Mind Cooling Neophyte Join Date: Oct 2001 Location: Houston Posts: 5	Ya thats the vid that i saw.. was at toms hardware of them playing i think ut, removing hs and blam.. up in smokes.. but now that it think about it.. if the pump fails i still do have the heatsink suckin up heat so it would probably rise fast but not like 40c - 1000c =) instantly. But i mean i dont know if i wanna go the software route.. i mean id love to be 1337 and build something like that... i love building stuff.. but i hate software and programming (ewwww) __________________ "One of these days my hs will just pop right off and fall onto my gf3, what a horrible day that will be"

11-01-2001, 08:22 PM	#9
IronHelix Guest Posts: n/a	Actually I believe most motherboards will shutdown when they detect the chip gets too hot, the reason that didnt happen in the THG article was the mobo didnt detect it. MBM5 will do fine as long as the HS doesnt pop off. The only scenario I see is if you have really bad airflow and it melts like 30seconds after the fan dies, or something goes wrong during the shutdown and it doesnt shut down.

11-01-2001, 08:45 PM	#10
Escape Your Mind Cooling Neophyte Join Date: Oct 2001 Location: Houston Posts: 5	Hehehe well i think we established that it probably would work, hardware or software way, as long as your hs doesnt pop off and crash into your vid card (BAD). But its more a matter of bragging rights now, so if i sucessfully build it, while im talking with my nerdy friends from comp sci and they say, i just made a program to shut my comp down, i can say.. well i just soldered some shit together and it shuts my comp down. Ahhh, the amount of competition between us is bad, the only thing we talk about is whos comp ownz who, and whos gonna get their ass kicked in q3 later. Anyway, thanks for you guys's help i think i might looks more closely at thoes schematics and see if i can throw something like it together. __________________ "One of these days my hs will just pop right off and fall onto my gf3, what a horrible day that will be"

11-01-2001, 09:20 PM	#11
IronHelix Guest Posts: n/a	one last idea... if your mobo uses a Winbond HM chip it probably has a 'temp alarm' pin. Depending on the mobo this may or may not do anything. You could hook it up to throw a relay wired to the power switch... shut it right down.

11-02-2001, 05:21 AM	#12
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	I wired up a small board that basically completely shuts off mains power to the box if the heat is over, it's pretty effective and the circuit isn't actually that hard. __________________ Once upon a time, in a land far far away...

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