ya..i did checked it twice...its enabled and auto...but still the monitor reads the frequency as 3.50Ghz..its just happen after i make a OC test on it...

CPU-Z?

yup..and realtemp as well..

wait for a while. 'speedstep' wont 'kick in' immediately.

for a'while'? for how long? its been a day though...

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Added on April 20, 2012, 6:15 pmOk this is my prob....setting back my bios to default....at 1st it shows turbo frequency is 3700MHz...after stress test, this is what i found...




Is it normal? seems kinda weird because before i did any overclock, it can boost up to 3.7Ghz...to make it weirder, the cpu's constantly shows 3.4-3.5Ghz even the load is about 20-30%

Please guide and help me on this...

This post has been edited by torino: Apr 20 2012, 06:15 PM

I believe there is a Thermal limit being set somewhere. Show us your BIOS setting.

By default, Intel's spec is 95W TDP, meaning if the CPU total power consumption is capped at 95W. If all four cores are active and total power utilised exceeds 95W, it will automatically throttle down the cores and run within the TDP limit.

To overcome this, you will need to raise the TDP limit, in ASUS bios this is called CPU Power Management.

Becareful though, by lifting the TDP cap, your processor will tend to run hotter.

Ya sure..these are my setting taken by phone camera just now...note that i just REENABLED EPU..but still it possess the same frequency...



If got anything to change, just tell me...i'll try my best to overcome my noobness...

Friend, read up on Intel Turbo Boost Technology for a better understanding on how this works.

The 3.7GHz Turbo will only work if there is one core utilisation, if 4 cores are utilised all the cores will not go to 3.7GHz, it will go to 3.4GHz instead as per design of not to exceed the TDP.

Refer to this image for clearer explanation.

http://www.notebookcheck.net/Review-Intel-...rs.43714.0.html


If you were to manually set a Turbo multiplier, this will overwrite the default setting and all four cores will go to the turbo value you specified.

This post has been edited by tanghm: Apr 21 2012, 12:08 PM

ok i got the point...so how about my first prob...the frequency stays 3.4-3.5Ghz even the load is roughly 20-30% only....

i sense that this doesnt related to turbo boost, its something else...

Try this.

In your screenshot #4, set C3 and C6 to Enabled instead of Auto.

*20~30% load is enough to set the processor to kick into 3.4GHz+, try closing all programmes and monitor again under 0~1% load it EIST should kick in and set the processor to 1.6GHz when idle.

This post has been edited by tanghm: Apr 21 2012, 02:03 PM

hmm, i've tried already...i can see some change in frequency...(sudden drop to 1.6 then going up back to 3.4/3.5 several times...
im not sure which programs do i need to close, already removed all active applications except in service tab and process tab...

maybe its because service/process tab requires 20-30% load of the system... sound logic but thanks for your help...

Hello guys i'm on the process of trying to OC my i5 2500k to 4.5Ghz and i pass Intelburn test and LinX test... i set my Vcore to 1.39... Everything is fine until i restart or on off my computer..
When i turning on my desktop it will shows that there is fail boot and ask me either enter bios or reset everything and reboot...
Temperature still in acceptable range..
Can someone enlighten me is there something wrong here?
My mobo is gigabyte z77x-d3h, and using noctua nhd-14 cooler
Thanks.

Hi All,

i have this setup, running on CM 212 Evo, is that vcore too high? i set it 1.285v at BIOS. need advices from all the sifus here

1st lowest vcore that passes IBT and now running prime95

IMO, yours is fine...sweet spot for vcore is 1.3-1.4V based on what i have read...

nice nice ... and hey i have the same setup as u ... almost

Intel® Core™ i5-2500K @ 4.7 GHz | Cooler Master 212 Evo with dual Artic Cooling F12 PWM (P/P) | Asus P8Z77-M | G-Skill Ripjaws X 8GB (2x4GB) | <--

Well CPU plan to stay at 4.5Ghz

Mind telling me what the vcore and temp in full load for 4.7?

im running on 4.5 only ... vcore set to 1.295 prime95 fail after 10 hour on 1.285 and 1.290.
my idle about 40~42, full load can up to 70~73

torino is the one running on 4.7

nah...for the time being im using auto setting..just want to test it first...
vcore pretty well i thing...1.39+-...temp somewhere around 80 degree...but it increase gradually since im using elite 311 plus, pretty bad for high OC..

i have no time for manual setting, waiting for my 4 months study break to test that..

Waaaa so hard to get it to stable

prime95 fail in 1 core again ... raise to 1.300 for vcore to test again

73c huh, i think sandy bridge can handle 80+c, but for long term 24/7 pc, i only set it at 4.3Ghz (kia si)
vcore 1.22 something, ideal 22-24c full load never exceed 50c

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Added on April 27, 2012, 2:36 pm so you mean auto oc bring you up to 4.7ghz?

This post has been edited by rudolfjie: Apr 27 2012, 02:36 PM