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Old September 9, 2013, 12:23 PM
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Default i7 3770 not stable at 3.9 ghz..

hye
just ordered a asus h77 v model for i7 3rd gen 3770 but now having difficult time as Intel suggest that 3770 uses 1 and 2 core at 3.9 GHz and 4 core at 3700 MHz at full load .. but when checking with prime95 with only 2 threads it mostly stables at 3.7ghz but for a sec or two reaches 3.8 and some times reaches 3.9ghz ... only for a sec . my question is why this is not stable at GHz Intel suggest .... the temps iam getting seems fine 60-c at full load its always stable at 3.7 when i test with 8 threads...or 2.thread.......... iam not getting why its never stop at 3.9ghz for even 5 SECONDS... IT DISAPPEARS WITH A BLINK OF AN EYE ... IS THIS NORMAL..why THIS ISSUE.IS CAUSING. ANY HELP...
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Old September 9, 2013, 01:38 PM
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its not ment to run @ what your exspectting, turbo mode is tempary

notice stated UP TO 3.9 so its luck of the lottery
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Last edited by KaptCrunch; September 9, 2013 at 01:55 PM.
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Old September 9, 2013, 05:21 PM
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Even with prime only running 2 threads there would be other programs running in the background requiring more threads. As mentioned above, it is up to 3.9. The only guarantee is 3.4ghz. Anything above that is regulated by the motherboard/CPU. Your CPU is perfectly normal.
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Old September 10, 2013, 06:22 AM
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thanks for the replies ... as you said turbo is temoprary .. but iam little confused about people who have an 3770k said they can stable at 4.2 ghz all the time ... .. is this true ... and also you said 3770 has 3.4ghz as base frequency why than its always remain stable at 3.7 ghz ... as 3.7 is also in tubo mode .... sorry if this asked before but anyone who uses a 3770 can really maintain its speed at 3.9 .. can it be done with settings in bios...
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Old September 10, 2013, 06:54 AM
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Quote:
Originally Posted by demon08 View Post
thanks for the replies ... as you said turbo is temoprary .. but iam little confused about people who have an 3770k said they can stable at 4.2 ghz all the time ... .. is this true ... and also you said 3770 has 3.4ghz as base frequency why than its always remain stable at 3.7 ghz ... as 3.7 is also in tubo mode .... sorry if this asked before but anyone who uses a 3770 can really maintain its speed at 3.9 .. can it be done with settings in bios...
First rule to realize... no two chips are the same. What one does another may not. Yours may only work as high as as far as you can go.
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Old September 10, 2013, 08:55 AM
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A 3770k can be overclocked to maintain whatever the user can get out of it (if its on a z77 MOB). 3770 (non k) can be overclocked by 400mhz if its on a z77 MOB (don't quote me on that as its been a while since I read about OCing non-K CPU), but not at all on a H77 board.
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Old September 10, 2013, 02:07 PM
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Quote:
Originally Posted by Bond007 View Post
A 3770k can be overclocked to maintain whatever the user can get out of it (if its on a z77 MOB). 3770 (non k) can be overclocked by 400mhz if its on a z77 MOB (don't quote me on that as its been a while since I read about OCing non-K CPU), but not at all on a H77 board.
Actually, Asus is supporting OC'ing on their lower end boards now.
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Old September 10, 2013, 02:10 PM
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Actually, Asus is supporting OC'ing on their lower end boards now.
Yeah a few other companies are as well, but I read intel is going to be putting a stop to it.
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Old September 10, 2013, 02:37 PM
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First rule to realize... no two chips are the same. What one does another may not. Yours may only work as high as as far as you can go.
Not only that this is true, there is more in the game as well. The mainboard used and quality of the components on it play great role in what the maximum frequency end to be. Even a _GREAT_ chip with o/c potencial to 6GHz can be stoped from reaching more that 3.5GHz by just bad mainboard (poor caps and voltage regulators, instability, poor CPU voltage support in the first place... etc.).

So while in general all chips are different, when used in complex system (eg. PC), much more factors are at play and it is oversimplification to state that just the chips are different. Yes, they are. But there is much more to it...


In fact, I'm inclined to believe that it is the CPU die chips, that differ the smallest out of all the other differencies. That is because they are made the same and just by slight imperfections in the making they do differ. But these imperfections are really very very minor.
On the other hand, a capacitors, voltage regulators and overal CPU power supply design can and do vary very significantly, same for PSU's and cooling.
I believe that much higher variation that in the chip itself is in the way how the IHS is connected to the die - and on this connection matters everything in OC. In fact, when some cores can run faster that others (but not by this insignificant amound and for so brief time), it would let me to suggest, that the problem might be in the IHS and fixing it (removing the IHS) could lead to higher stable overclocking with same results for all cores.
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Old September 10, 2013, 02:41 PM
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As you said it depends upon the mobo to reach 3.9 or 3.7 ghz ... and my mobo is asis p8h77 v .. if i were using z 77 mobo.. will it get more headroom than getting current speeds ....
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