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Overclock fail 2550k more than 70 degrees

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March 6, 2012 11:38:03 PM

At stock i ran prime95 and get no more than 60-65 degrees celcius on speedfan

Then i tried to up the multiplyer to 40 so it would run at 4 ghz.

Then when running orthos it goes all the way up to 73 degrees celcius so i shut it off quickly.

after reading some tutorials i see that locking the vcore is better sothat it wont overheat.

so i put my vcore at 1.340

still it went all the way up to 70 degrees +

then i tried easytune 6 and put it to 3.8 ghz

and again it went to 70+

now im back at stock and its just 65 degrees max, on Prime95 and Battlefield 3.

im using a Gigabyte motherboard

How do i overclock my cpu without it getting so hot ?

all i need is 4ghz thats pretty reasonable for a K edition of intels cpu..

please help me out i'm getting sick and tired of reading tutorials and some terms i just dont understand such as C1E, EIST, C3, C6 States, VID and SVID sigh...
i've been using this.

All i want is a simple overclock of 4 ghz can someone please help me, i can take pictures of my whole bios if needed
a b K Overclocking
March 7, 2012 12:17:05 AM

I agree with recon, which cooler are you using and was it properly installed?
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March 7, 2012 12:17:30 AM

Well I don't know about your i7 2550k but my i7 920 runs at 1.2 on the vcore at 3.8G and 70C is not a problem. I have run mine over a year doing Seti with it hovering from 60-75C depending on room temps. I would slowly try to lower the vcore till it starts to have issues then take it up a hair.
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March 7, 2012 12:21:35 AM

hmm i guess ur right , after doing some intence reading i noticed that the multiplyer made the vcore 1.4 so i asumed it was stock because it was set on auto ,

so now my guess is ,


Disable C1E, EIST, and C3 C6 States
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March 7, 2012 12:22:17 AM

set vcore to 1.2
and multply to 40x

then i should be fine?
i'm not sure if this is it .

do i need to change anything else?
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March 7, 2012 12:23:39 AM

and i yes i am using a stock fan wich is blowing really really hard,

the internet tells me that a moderate overclock to 4 ghz without a vcore increase will not raise temps?

+ i set the rpm to max
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March 7, 2012 12:23:43 AM

im guessing you're using the stock CPU cooler, my stock I5 idles @ 28-33 C and under prime 95 goes to 62-67 C with the stock cooler until i go aftermarket and OC.
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March 7, 2012 12:24:11 AM

ahnilated said:
Well I don't know about your i7 2550k but my i7 920 runs at 1.2 on the vcore at 3.8G and 70C is not a problem. I have run mine over a year doing Seti with it hovering from 60-75C depending on room temps. I would slowly try to lower the vcore till it starts to have issues then take it up a hair.


its an i5 and even if it was an i7 you cant compare different generations like that. Sandy bridge runs cooler then your i7.

Op that voltage is way to high. thats a voltage for a 4.5-4.6 overclock. lower your voltage to around 1.225 and see what you get. also get an aftermarket cooler.
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March 7, 2012 12:35:08 AM

i am now running orthos,

i disabled the things i sayd i would do

Multiplyer is now x40 and vcore is locked at 1.200

max temperature im getting is 62 degrees :D 

u think i damaged my chip when it was at 70? it was only at 73 for a second then i shut it off real quick
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a b K Overclocking
March 7, 2012 12:49:27 AM

Run a burn in test to test for stability. if it passes, i'd say you're good. Temps look much better :) 
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March 7, 2012 1:17:48 AM

if i try to put the multi higher and the voltage the same i get an 4th core crash error in prime95 or a BSOD in boot,

im leaving it at 40 and 1.200

only the strange thing is it says my bus speed 99.8 mhz so im not at 4ghz core speed but 3990.8 MHZ . i wonder why this is. perhaps cuz of the Disable C1E, EIST, and C3 C6 States ?

i dont know. maybe i should manually raise the FBS to 100?

im using the bled torture test for stability.

anyway id like to select a best awnser but i do not know how,
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a b K Overclocking
March 7, 2012 1:24:16 AM

at a vcore of 1.200 you still have a little room to safely play if you want to get a better cooler. With an aftermarket cooler you could go safely raise this to increase stability at higher clocks.
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March 7, 2012 1:29:41 AM

yes ive gotta go to the computer store today cuz my hdd is failing , so i need to clone everything . perhaps ill get another one next month.

do u happend to know why my Bus speed is 99.8? and my Ghz is 3990,8? instead of 4?
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a b K Overclocking
March 7, 2012 1:50:32 AM

There is what is considered normal tolerence and your 99.8 MHz is well with in tolerence @ ± 0.2%. If you did set it to 100 on the nose you WOULD NEVER see a difference.

As to Temperature, No 70 C did not damage your CPU. It has built in self protection that does NOT kick in till you hit mid 90 C.

As To the stock HSF. I'm a real believer in using it as it was designed to - a WEIGHT to keep the box from blowing away. I never even take it out of the box. And yes it is OK for stock and a VERY mild OC.

ON vCore. Intel specs put the Max @ 1.5 V Users tend to use 1.4 V as a max. Myself, my to constraints are (1) Vcore =<1.3V and temps runing Prime 95 =<65C.
Currently running @ a low OC of 4.2. Had it upto 4.6, but the difference between 4.2 and 4.6 is not that noticeable in day-to-day usage.
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March 7, 2012 1:59:00 AM

kelthic said:
Looks like this sometimes happens with gigabyte boards. If you set the bus to 100.2 you should get 100Mhz in the bios. This is just a repeat of what i found in http://www.overclock.net/t/923956/gigabyte-ud4-and-bus-...


i looked in the bios but i couldnt fid the bus speed anywhere , how is it named in the bios |?
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March 7, 2012 2:06:47 AM

ah i see i guess it was called BCLK or something.


By the way how do i select the person with the best awnser for my thread?
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a b K Overclocking
March 7, 2012 2:47:44 AM

Yeah, sorry. Did that fix the problem?
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March 7, 2012 3:48:53 AM

yes it did the maximum temp after 3 hours of 95 is 68 degrees and that was only for a second the rest was 66 avarage

may i ask how i select the best awnser for the thread? in the forum
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a b K Overclocking
March 7, 2012 7:21:54 AM

Should be a gold cup above the answers for you to click.
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a c 225 K Overclocking
March 7, 2012 11:25:04 AM

Your BCLK automatically set at 99.8, don't worry about that, it's a solution the new BIOS flash has built into it, 99.8 will stop the double booting on boot up inherent to all the Ks.

The 2550K is a seriously finicky CPU to overclock even if you go past 4.0ghz you'll need to run your voltage manually, I think it's a crippled 2600K because it has some finicky overclocking the same as the 2600K does.

Mine would run 45x at 1.310V after a lot of experimenting, however what blew my mind with it, is it would run 5.0ghz at 1.445v and 5.0ghz seemed to be it's sweet spot, but I don't think you'll be able to do that air cooling.

Quote:
may i ask how i select the best awnser for the thread?


To have the Best Answer available to you it has to be a Question thread, not a Discussion thread, I'll change it to a Question thread for you.

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March 7, 2012 2:30:50 PM

meh the blend test was stable at 65 degrees at 4 ghz with stock cooler but now im trying the max FPU test and it gets too hot for me im down to 3.8 now and priming
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March 7, 2012 4:03:33 PM

Sorry I missed you were running a stock cooler 3.8ghz is about as far as you'll comfortably get, I strongly advise you to get yourself a good aftermarket cooler if you intend to overclock for long time periods.
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March 7, 2012 4:18:23 PM

Fudge it i put it back to stock, im going to post a cooler request check out the page on Cpu's
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March 7, 2012 5:33:05 PM

cm0scm0s said:
yes it did the maximum temp after 3 hours of 95 is 68 degrees and that was only for a second the rest was 66 avarage

may i ask how i select the best awnser for the thread? in the forum


You also need to remember that doing Benchmarking will run the system harder then your normal daily usage. Unless you are like me and run Seti 24/7/365 on your computer.

I agree that you should get an aftermarket cooler if you are going to play around with overclocking. The stock cooler will not make you happy.

If you are worried about your temps I wouldn't be. You weren't high enough for long enough to cause an issue. Just keep testing where it runs stable at the lowest voltages you can get then it causes the lowest temps and longest life.

It sounds like you are on the right track to have a nicely overclocked system and learning that you are becoming more and more of a nerd like 99.99% of the people on the forums. :) 
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March 7, 2012 6:04:40 PM

Intel stock coolers haven't been decent except for a limited few have been nothing but crap. After a few months of nearly contentious use in a home, office, or school they get very very nasty and usually caked to where there is no airflow through the block. These very small low profile coolers are the worst and I wouldn't use them event at stock clocks for long.
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March 7, 2012 11:43:31 PM

Best answer selected by cm0scm0s.
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