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CPU heat questions.


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#1 Quadclops

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Posted 07 January 2016 - 03:05 AM

I recently bought a Core 2 Quad Q9550 brand new for $100. I installed it and have had no problems with it. It runs flawlessly and I was thinking about overclocking it to 3.4 from 2.83 maybe. I am using the stock heatsink and intel fan, I have read of people overclocking it and using stock coolers with no problems.

 

My idle temps now are 29/26/27/36. I haven't put it under full 100% load yet but under like 75-85% load its temps read 62/57/63/68.

 

I have read on other forums that some people think above 65C is too hot but then others say that you can run it at around 75C safely (its like almost split 50/50 in what people say) and that the real issues aren't until 85C-90C+ and that it wont throttle itself until after  What is the honest answer? When should I worry about the temps? Any help would be appreciated.



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#2 rqt

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Posted 07 January 2016 - 03:47 AM

My personal thoughts (as a Q9550 owner):-

 

1) Temperatures over 70 C for while stress testing should be avoided, if it gets to 75 C it's time to turn it off. In either case you need better cooling (I couldn't find a definitive answer on the net either)

 

2) Anyone who thinks the stock cooler adequate for overclocking use must be using the machine outdoors in a cold climate - it's certainly no good indoors in the (northern part of the) UK.



#3 Quadclops

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Posted 07 January 2016 - 05:14 AM

My personal thoughts (as a Q9550 owner):-

 

1) Temperatures over 70 C for while stress testing should be avoided, if it gets to 75 C it's time to turn it off. In either case you need better cooling (I couldn't find a definitive answer on the net either)

 

2) Anyone who thinks the stock cooler adequate for overclocking use must be using the machine outdoors in a cold climate - it's certainly no good indoors in the (northern part of the) UK.

 

Yeah, I have read peoples posts on forums where they say that it can run at 75C+ without doing any harm to it. While other people say you should keep it below 70C. I have never gone over 70C for any of my cores. The highest was 69C and that was core 3. The other ones stay cooler for some reason. Intels' website says that the TCase max for the Q9550 is 71.4C. My TCase/CPUtin has never gone above 52C. So I dont think I am going to do any harm to the CPU at the temps it is at. Just wanting some reassurance on it. I will probably try to reseat the cooler, might help lower the temp.



#4 the_patriot11

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Posted 07 January 2016 - 10:46 AM

I'm sure it "could" run at 75 degrees at least for awhile, but keep in mind the hotter it runs the shorter the lifespan. I certainly wouldn't run it that high, even just during stress tests and I wouldn't even dream of overclocking, especially not that high of an overclock, without aftermarket cooling, preferably liquid, but short of that a big heatsink and fan.

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#5 WaltC

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Posted 07 January 2016 - 11:14 AM

71.4 according to this.

http://www.cpu-world.com/CPUs/Core_2/Intel-Core%202%20Quad%20Q9550%20EU80569PJ073N%20%28BX80569Q9550%29.html


Edited by WaltC, 07 January 2016 - 11:15 AM.


#6 Quadclops

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Posted 07 January 2016 - 02:15 PM

I'm sure it "could" run at 75 degrees at least for awhile, but keep in mind the hotter it runs the shorter the lifespan. I certainly wouldn't run it that high, even just during stress tests and I wouldn't even dream of overclocking, especially not that high of an overclock, without aftermarket cooling, preferably liquid, but short of that a big heatsink and fan.

I dont think I will overclock it and its never gone above 70C. I am going to buy an aftermarket fan and heatsink though. So that should solve the problem. I just wanted to know what temps it should be at under load.



#7 LaurentiuB

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Posted 07 January 2016 - 05:27 PM

Hy, a little observation, use good quality of termal compound , aftermarket fan usualy have a bad quality thermal pcompound



#8 LaurentiuB

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Posted 07 January 2016 - 05:30 PM

My personal thoughts (as a Q9550 owner):-

 

1) Temperatures over 70 C for while stress testing should be avoided, if it gets to 75 C it's time to turn it off. In either case you need better cooling (I couldn't find a definitive answer on the net either)

 

2) Anyone who thinks the stock cooler adequate for overclocking use must be using the machine outdoors in a cold climate - it's certainly no good indoors in the (northern part of the) UK.

 

 

Try to use oversize fan, like fujitsusiemens computer or dell to avoid overheat, and anoyng noise + good compound (just an ideea)



#9 Quadclops

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Posted 07 January 2016 - 05:34 PM

Hy, a little observation, use good quality of termal compound , aftermarket fan usualy have a bad quality thermal pcompound

I used Artic 5 thermal paste on it.



#10 the_patriot11

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Posted 07 January 2016 - 06:11 PM

thats good paste, should do you fine. I personally try to get my CPUS running at least 10 C under max load ideally, not always possible, but thats what I shoot for.


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#11 Quadclops

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Posted 16 January 2016 - 07:34 PM

Just to follow up with you guys. I bought a $20 fan and heat sink off Newegg. My temps dropped from mid 60Cs under load to mid 40Cs under load. I would say that is a victory.



#12 Captain_Chicken

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Posted 16 January 2016 - 10:04 PM

Happy computing!

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