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CPU Temp under load too high?

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Anonymous
a b à CPUs
January 5, 2012 4:39:14 PM

Hey all,

I just replaced the stock cooler from my i5 2500k with the Cooler Master Hyper N 520. I am doing some encoding with handbrake (97%-100% cpu load) and getting temps around 70c from Real Temp, and these temps started right away, not hours into encoding.


I've read others saying that they rarely get above 55c and most max at 60c with this cooler. I am OC'd to 4.6GHz, have a HAF 932 (all intake and exhaust fans are running) case and used the supplied thermal compound.

Even before I OC'd (3.3GHz) I was hitting 65c.

Are these temps alright, they seem high to me. I've felt inside my case and the HSF is warm. Any ideas as to what I could do to lower these temps?

Thanks everyone!

More about : cpu temp load high

a b à CPUs
January 5, 2012 4:51:38 PM

70 centigrade is still fine. Not great, but not dangerous.
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a c 146 à CPUs
January 5, 2012 5:00:24 PM

That's kind of high but it's not going to burn out your CPU. What software are you using to get these temps?
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January 5, 2012 5:01:41 PM

Thats high for not being a stock cooler. My 2600k with a coolermaster evo will not go over 50 degrees when stress testing it with prime95. Even if you used the stock thermal grease from coolermaster you still seem hi. Id try re applying the heat sink.

Good luck.
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a b à CPUs
January 5, 2012 5:01:57 PM

When you OC, Make sure when you MAX CPU usage, dont get it over 85*C OR if you dont, dont let it hit 75*C when normal use like playing BF3... Here's some tip you could do but I dont recommend them, only if you are getting high temps...
~Lap the CPU+Heatsink
~Get 100% Liquid Metal Thermal Compound(It can be found on FrozenCPU.COM website, search it on google)
~Get better Cooler
~Live in colder place(Some people that said they're CPU are 60s or so probably line in new york or so...)
~Live in colder house and let your computer warm it up...

What I recommend you to do:
~Underclock it if you dont like that temp because at that high OC, it's using as much as my i7 950 at 4GHz @ 160w~180Watts, maybe more because an 2600k OC to 4.6~4.9GHz is already at 200w~220Watts
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January 5, 2012 5:05:37 PM

That is high to me, but your also overclocked your CPU quiet a bit.

When you switched to your aftermarket cooler did you remove the old thermal paste and reapply new thermal paste before seating the new hardware?

What are your idle temps too? Your idle should be +-2 degree from ambient room temps.
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Anonymous
a b à CPUs
January 5, 2012 5:09:59 PM

rds1220 said:
That's kind of high but it's not going to burn out your CPU. What software are you using to get these temps?



Real Temp
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Anonymous
a b à CPUs
January 5, 2012 5:11:36 PM

seriux said:
Thats high for not being a stock cooler. My 2600k with a coolermaster evo will not go over 50 degrees when stress testing it with prime95. Even if you used the stock thermal grease from coolermaster you still seem hi. Id try re applying the heat sink.

Good luck.



Thanks,
I thought that might be the issue. When i applied the thermal compound I got caught up doing something else, and I left the compound sit on the cpu surface for a while before I put the heat sink on. Could this have messed things up?
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Anonymous
a b à CPUs
January 5, 2012 5:13:25 PM

Cryosis00 said:
That is high to me, but your also overclocked your CPU quiet a bit.

When you switched to your aftermarket cooler did you remove the old thermal paste and reapply new thermal paste before seating the new hardware?

What are your idle temps too? Your idle should be +-2 degree from ambient room temps.



I know that overclocking will be responsible to higher temps, but even before over clocking I was at 65c while using handbrake.

I did remove the old thermal compound. I idle in the high 20's - low 30's centigrade.
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a b à CPUs
January 5, 2012 5:25:43 PM

70 degrees is normal for that overclock. if i were you id ship that cooler back and get a better one if your going to be running that high an overclock for that long under full load. im assuming you do a lot of encoding.

also to whoever said that 85* is max safe temperature is plain wrong. if you run your cpu that hot for long enough you will not have a cpu. maybe a year tops it would last. ideally keep the temps under 60* but under 70* is ok. also the amount of damage done to a cpu by temperature isnt linear. so more damage will be done going from 70 to 80 then 60 to 70.
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Anonymous
a b à CPUs
January 5, 2012 5:46:23 PM

cbrunnem said:
70 degrees is normal for that overclock. if i were you id ship that cooler back and get a better one if your going to be running that high an overclock for that long under full load. im assuming you do a lot of encoding.

also to whoever said that 85* is max safe temperature is plain wrong. if you run your cpu that hot for long enough you will not have a cpu. maybe a year tops it would last. ideally keep the temps under 60* but under 70* is ok. also the amount of damage done to a cpu by temperature isnt linear. so more damage will be done going from 70 to 80 then 60 to 70.



I actually don't plan to OC that much, and I will probably knock it down from 4.6. The only reason I really OC'd in the first place was to compare the temps from before and after. If I knock the OC down do you think the cooler I have will do ok?
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a b à CPUs
January 5, 2012 5:48:36 PM

1) did not catch what your ambient temp is. Our house, winter time Room temp seldom above 68 F, and summur time goes up to mid 70s. If your cpu temp is currently 70 with an ambient temp of 70 F, then in the summur your ambient temp goest to say 75->77 F, then expect your core temps to go up by 8->10C.

My cooler is a zalman 9900Max and during the summer with an OC of 4.6 I was hitting low 60s if I remember correctly.

If you maintain a max of 70 ± 3 C (for 8 out 24 Hours per day), your CPU should last until it is time to replace, THAT is NOT to say the cooler the better, Myself do not like to go above 65C. Max temp for the 2500k is mid 90's at which point the CPU will start to throttle down.
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a b à CPUs
January 5, 2012 6:59:41 PM

cbrunnem said:
70 degrees is normal for that overclock. if i were you id ship that cooler back and get a better one if your going to be running that high an overclock for that long under full load. im assuming you do a lot of encoding.

also to whoever said that 85* is max safe temperature is plain wrong. if you run your cpu that hot for long enough you will not have a cpu. maybe a year tops it would last. ideally keep the temps under 60* but under 70* is ok. also the amount of damage done to a cpu by temperature isnt linear. so more damage will be done going from 70 to 80 then 60 to 70.

I didn't say max safe temp was at 85*C... What I said was that just keep the temp when "Full Load" under 85*C and Below 70*C on normal use or when playing games like BF3... When I play MW3, I made sure it would be under 70*C when I OCed it to 4Ghz and the max i seen on CoreTemp was 64*C(Average is 55-60*C) which is great for a 4GHz normal use... My max temp is 100*C+ LMSAO BUT I was able to get the OC by copying the setting from people who did a test on a cooler and that was successful with 4GHz OC...
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a b à CPUs
January 5, 2012 7:01:56 PM

RetiredChief said:
1) did not catch what your ambient temp is. Our house, winter time Room temp seldom above 68 F, and summur time goes up to mid 70s. If your cpu temp is currently 70 with an ambient temp of 70 F, then in the summur your ambient temp goest to say 75->77 F, then expect your core temps to go up by 8->10C.

My cooler is a zalman 9900Max and during the summer with an OC of 4.6 I was hitting low 60s if I remember correctly.

If you maintain a max of 70 ± 3 C (for 8 out 24 Hours per day), your CPU should last until it is time to replace, THAT is NOT to say the cooler the better, Myself do not like to go above 65C. Max temp for the 2500k is mid 90's at which point the CPU will start to throttle down.

You forgot about voltage, higher voltage is worst than temperature if it's under 75*C... 1.4V is dam high lol...
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a b à CPUs
January 5, 2012 7:13:08 PM

legendkiller said:
I didn't say max safe temp was at 85*C... What I said was that just keep the temp when "Full Load" under 85*C and Below 70*C on normal use or when playing games like BF3... When I play MW3, I made sure it would be under 70*C when I OCed it to 4Ghz and the max i seen on CoreTemp was 64*C(Average is 55-60*C) which is great for a 4GHz normal use... My max temp is 100*C+ LMSAO BUT I was able to get the OC by copying the setting from people who did a test on a cooler and that was successful with 4GHz OC...


you can let your cpu get up to 85* but mines not going to get up there at any time. your temps should be below 70 degrees under full load not 85*. also you must have a shitty cooler on your cpu cause at 4.0 my cpu never goes over 65* during prime95 testing and never over 45-47 degrees while gaming.

100 degrees??? by copying someone elses overclock? i wouldnt take advice from this guy,
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Anonymous
a b à CPUs
January 5, 2012 7:31:10 PM

legendkiller said:
You forgot about voltage, higher voltage is worst than temperature if it's under 75*C... 1.4V is dam high lol...



So what would be a good voltage to set it to? I can do this from the BIOS right?
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a b à CPUs
January 5, 2012 7:42:49 PM

Quote:
So what would be a good voltage to set it to? I can do this from the BIOS right?


1.4 is not that high if you keep your temps down. dont let people fool you.
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a b à CPUs
January 5, 2012 7:48:50 PM

cbrunnem said:
you can let your cpu get up to 85* but mines not going to get up there at any time. your temps should be below 70 degrees under full load not 85*. also you must have a shitty cooler on your cpu cause at 4.0 my cpu never goes over 65* during prime95 testing and never over 45-47 degrees while gaming.

100 degrees??? by copying someone elses overclock? i wouldnt take advice from this guy,

IDK what kind of CPU you got but My CPU is a i7 950 foo... I dont really know what kind of CPU you talk about that is under 65*C but you haven't read what CPU I got... My cooler is a old cooler from a 775 Socket with 1366 bracket so I just put it on mine, with that said, it's better than stock cooler... It takes about 5~7 min for my CPU to hit around the 90s, BTW I lapped my CPU and my Heatsink which drop about 3*C on idle and bf lapped, the cpu hit 100*C in like 1-3 min...

i7 950 1.34v 167x34 @ 4.08GHz HTT Enabled
I'd like to see you try and get an i7 950 and get below 65*C with the same Clock speed with HTT Enabled :/ ...
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a b à CPUs
January 5, 2012 7:57:05 PM

cbrunnem said:
1.4 is not that high if you keep your temps down. dont let people fool you.

Your dumb? @ 1.45v, your CPU wont even last a year, maybe, but not 2 year for sure...
READ THIS,

http://www.clunk.org.uk/forums/overclocking/39184-p67-s...
Scroll down until you see the "So why 1.35v vCore?"



~This should solve your temp issue....

I want to do 4.8GHz, but my temps are too high - What can I do?

~The first thing that I would suggest is to check whether or not you really need hyperthreading enabled, check the documentation for your most used software, even today, many programs do not take advantage of this feature. By disabling hyperthreading, your CPU should run much cooler, and will probably require less voltage to get to 4.8GHz.
~Dial down those voltages - During your overclocking escapades, it's all too easy to avoid the time consuming method of raising the voltage one notch at a time, and to increase it in larger increments. Many people tend to leave the voltages once they have the CPU stable, and you can sometimes reduce the temps by a few degrees.
~Consider better cooling - Sometimes, simply adding a better fan to your cooler can make a worthwhile difference, similarly, if you have a tower type cooler that can accommodate two fans, then a push/pull configuration can also make a reasonable difference. Decent thermal paste, properly applied is a must.
~Make sure that your case has adequate airflow and is free from messy wires and clutter. Experiment with fan orientation too, efficient exhausting of hot air is essential.
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a b à CPUs
January 5, 2012 8:11:41 PM

Max Vcore for I5-2500k is 1.5V (Intel spec sheet). From what I've read recommended max is like 1.4 or less, My limit is 1.30 V

On turning Hyperthreading off - I5-2500k is a 4core/4thread CPU - No Hyperthreading. I7-2600k = 4 cores 8 threads, and Hyperthread can be turned off.
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a b à CPUs
January 5, 2012 8:17:27 PM

legendkiller said:
IDK what kind of CPU you got but My CPU is a i7 950 foo... I dont really know what kind of CPU you talk about that is under 65*C but you haven't read what CPU I got... My cooler is a old cooler from a 775 Socket with 1366 bracket so I just put it on mine, with that said, it's better than stock cooler... It takes about 5~7 min for my CPU to hit around the 90s, BTW I lapped my CPU and my Heatsink which drop about 3*C on idle and bf lapped, the cpu hit 100*C in like 1-3 min...

i7 950 1.34v 167x34 @ 4.08GHz HTT Enabled
I'd like to see you try and get an i7 950 and get below 65*C with the same Clock speed with HTT Enabled :/ ...


oh lol well you OP has a 2500k and you talked like you had the same thing when you referenced your cpu as a comparison. easy mistake. now if that was a sandy bridge temps you were talking about i would stand by my statements.
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a b à CPUs
January 5, 2012 8:19:35 PM

legendkiller said:
Your dumb? @ 1.45v, your CPU wont even last a year, maybe, but not 2 year for sure...
READ THIS,

http://www.clunk.org.uk/forums/overclocking/39184-p67-s...
Scroll down until you see the "So why 1.35v vCore?"



~This should solve your temp issue....

I want to do 4.8GHz, but my temps are too high - What can I do?

~The first thing that I would suggest is to check whether or not you really need hyperthreading enabled, check the documentation for your most used software, even today, many programs do not take advantage of this feature. By disabling hyperthreading, your CPU should run much cooler, and will probably require less voltage to get to 4.8GHz.
~Dial down those voltages - During your overclocking escapades, it's all too easy to avoid the time consuming method of raising the voltage one notch at a time, and to increase it in larger increments. Many people tend to leave the voltages once they have the CPU stable, and you can sometimes reduce the temps by a few degrees.
~Consider better cooling - Sometimes, simply adding a better fan to your cooler can make a worthwhile difference, similarly, if you have a tower type cooler that can accommodate two fans, then a push/pull configuration can also make a reasonable difference. Decent thermal paste, properly applied is a must.
~Make sure that your case has adequate airflow and is free from messy wires and clutter. Experiment with fan orientation too, efficient exhausting of hot air is essential.


cool your siteing info thats over a year old. back from a time when not much was known about these cpu's.

also 1.4 and 1.45 is a big difference buddy. the dangers of voltage is not linear.

oh and i remember when i was in elementary school and everyone called each other stupid cause they had different opinions. grow up.
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a b à CPUs
January 5, 2012 8:25:43 PM

Bobby, On the I5-2500k, You should be able to hit 4.6 at (or under) 1.30 volts. 4.2 should very close to stock (just a slight jump in vcore. @ work so can not check my set-up.
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a b à CPUs
January 5, 2012 8:34:28 PM

RetiredChief said:
Bobby, On the I5-2500k, You should be able to hit 4.6 at (or under) 1.30 volts. 4.2 should very close to stock (just a slight jump in vcore. @ work so can not check my set-up.


that is far from the truth. maybe 4.5 if you have a really good chip.
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Anonymous
a b à CPUs
January 5, 2012 8:47:27 PM

cbrunnem said:
that is far from the truth. maybe 4.5 if you have a really good chip.

Most chips should be able to get 4.5 at 1.3v.
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a b à CPUs
January 5, 2012 10:43:12 PM

cbrunnem said:
oh lol well you OP has a 2500k and you talked like you had the same thing when you referenced your cpu as a comparison. easy mistake. now if that was a sandy bridge temps you were talking about i would stand by my statements.

Read my First Post on this thread(My post not the first post)... I said it clearly that "My i7 950" is my CPU
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Anonymous
a b à CPUs
January 5, 2012 10:59:14 PM

legendkiller said:
Read my First Post on this thread(My post not the first post)... I said it clearly that "My i7 950" is my CPU

I find it misleading too.
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a b à CPUs
January 5, 2012 11:06:23 PM

Quote:
Most chips should be able to get 4.5 at 1.3v.


everything i have seen/read is that people can get 4.5 at around 1.325 and my own personal experience/reading/others experience say that good chips can overclock to 4.5 at around 1.31 +- .01 but not 4.6

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Anonymous
a b à CPUs
January 6, 2012 3:03:43 AM

Thank you all for your replies! I went through the whole process of re-installing the HSF and cleaned off the old and applied new thermal compound.
Now doing the same handbrake encoding that I was earlier hitting mid 70's C , I now am in the mid 50's C full load, OC @ 4.2GHz. A HUGE improvement over the stock HSF which I saw hit over 90, stock 3.3GHz! I can't believe Intel would ship such a terrible cooler.
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a b à CPUs
January 6, 2012 4:13:33 AM

Quote:
Thank you all for your replies! I went through the whole process of re-installing the HSF and cleaned off the old and applied new thermal compound.
Now doing the same handbrake encoding that I was earlier hitting mid 70's C , I now am in the mid 50's C full load, OC @ 4.2GHz. A HUGE improvement over the stock HSF which I saw hit over 90, stock 3.3GHz! I can't believe Intel would ship such a terrible cooler.

It depend on the height of the cooler they sent tho... My bro got a stock intel HS for his CPU and is 2 inch tall for his Q9550, He OC it to 3.59GHz and hit in the high 70s on "LOAD" but not 80s tho... My other bro bought a Q9550 and got a half inch height stock heatsink and he was hitting 70*C(Stock clocks) average on "idle" He replaced it with a H50 and temp never passed 50*C @ 2.83GHz(Stock)... You probably got the half inch heat sink or the 1 inch... BTW, When you install a heatsink, make sure once you put it in, dont pull it back out, Air is the worst heat conducting or heat transferring...
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Anonymous
a b à CPUs
January 6, 2012 2:23:47 PM

legendkiller said:
It depend on the height of the cooler they sent tho... My bro got a stock intel HS for his CPU and is 2 inch tall for his Q9550, He OC it to 3.59GHz and hit in the high 70s on "LOAD" but not 80s tho... My other bro bought a Q9550 and got a half inch height stock heatsink and he was hitting 70*C(Stock clocks) average on "idle" He replaced it with a H50 and temp never passed 50*C @ 2.83GHz(Stock)... You probably got the half inch heat sink or the 1 inch... BTW, When you install a heatsink, make sure once you put it in, dont pull it back out, Air is the worst heat conducting or heat transferring...



I did get one of those half inch coolers, and it was pretty useless.

As for lifting the the HSF after getting it set, that's exactly what I did. I lifted it to make sure the thermal compound had made contact with the cooler. I redid the whole process, second time around I was sure not to lift it once I got it in place. My full load temps are 15-20C cooler!
This was my first build, and I had no idea how big a difference a little air pocket could make. I now know better for next time.
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a b à CPUs
January 6, 2012 5:04:26 PM

Quote:
I did get one of those half inch coolers, and it was pretty useless.

As for lifting the the HSF after getting it set, that's exactly what I did. I lifted it to make sure the thermal compound had made contact with the cooler. I redid the whole process, second time around I was sure not to lift it once I got it in place. My full load temps are 15-20C cooler!
This was my first build, and I had no idea how big a difference a little air pocket could make. I now know better for next time.

Now you know lol... Just not let air get in the middle of the thermal compound when putting a heatsink on otherwise your in bad luck, BTW dont put too much thermal compound, it is said to do better with less thermal compound or at least cover up the whole CPU with thermal compound than put HSF on it...
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a b à CPUs
January 6, 2012 5:15:55 PM

just for reference air has about a 25 times worse thermal conductivity then aluminum and prolly about 5-10 times worse then thermal paste.
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a b à CPUs
January 6, 2012 6:15:36 PM

cbrunnem said:
just for reference air has about a 25 times worse thermal conductivity then aluminum and prolly about 5-10 times worse then thermal paste.

Yeah, if you want the best heatsink, look for these spec:
Copper Base
At least 4 copper heat pipes or more
Aluminum fins
These are good spec to keep you cooled...
BTW the all copper heatsink like the ThermalRight(Look on google) doesn't do any better, it's so heavy and it cost about $200 for the same performance as the other like ThermalRight Arrow... Aluminum cool down faster awhile copper absorb heat better...
Copper Base + Copper Heat Pipes + Aluminum Fins = Perfect HeatSink
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a b à CPUs
January 6, 2012 6:24:29 PM

perfect heatsink would be would be a heatsink made of all silver or preferable diamond. they have better specific heats. but reasonably wise copper fins would be better.

a copper base only slows down the processor heating up at first but once it is soaked it makes no difference if the heat pipes are in direct contact.
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February 16, 2012 6:57:32 PM

Hey guys.
I have got a t7500 2.2 core 2 processor which would reach 98 C under extreme gaming.
I called dell and they replaced the motherboard, fan, and the heat sink.

The temperature is better but it still reached 85C while playing game (flight sim). What do u think is the problem?

Laptop dell vostro 1500 with NVIDIA 8600M GT.

Thanks
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a b à CPUs
February 16, 2012 9:08:08 PM

bad ventilation
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!