8700k never exceeds 4.3 Ghz

[Assaf Patishi]

Hi, just built an 8700k + Gigabyte Gaming 5 pc. I notice that the cpu never exceeds 4.3 Ghz no matter what I do with it. Even cinebench single core test resulting in 4.3 Ghz on all cores (why all cores are working anyway in this test?.. what's the point of "single core" ?)

In the bios i left everything on auto and in the advanced cpu settings everything seems to be right (4.7 Ghz on 1 core, 4.6 2 cores.. etc').

I keep HWmonitor always on when operating the pc and i never see speed above 4.3.
What is going on? Any answer would be appreciated.

 

[WildCard999]

Try Prime95 version 26.6 Small FFT's for 15-30 min. see if that raises the boost speed.
http://www.mersenneforum.org/showthread.php?t=15504

It should stay under 80C, if it goes above may be the reason the CPU doesn't increase the speed.
http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

 

[marksavio]

im not familiar with your motherboard but if you let your BIOS to auto clock. it may have set your AVX offset to 3 or more. try double-checking on that also.

try running prime95 as well. run a torture test. select small ffts. uncheck run ffts in place. this will run mostly non-AVX commands.

 

[WildCard999]

im not familiar with your motherboard but if you let your BIOS to auto clock. it may have set your AVX offset to 3 or more. try double-checking on that also.

try running prime95 as well. run a torture test. select small ffts. uncheck run ffts in place. this will run mostly non-AVX commands.

I wouldn't trust any auto overclocking feature as in my experience it gives the CPU too much voltage.

 

[marksavio]

the OP mentioned that he set his BIOS settings to auto. so i mentioned IF he did that. i hope he didnt misread that as well as asking him to auto OC tweak 😀

 

[Assaf Patishi]

Thanks for the reply, but i prefer not to run aggressive stress test at this point. I also not going to overclock, at least for a while.
But anyway. even if i would run prime95, it will still force the cpu to operate in 6 cores mode so whats the point?
I want to know why the cpu doesn't boost to 4.7/4.6 when running day to day tasks.

NOTE: my temps are fine, in HWmonitor it shows high 20's - 30 degrees when idle or doing light work. during gaming (AC origins, pretty cpu heavy) it is spending time in the 50's. so temps aren't the issue here imo.

 

[WildCard999]

I see, my bad lol. I recommended Prime to make sure the CPU will boost but if your happy with the performance then there's no need to.

 

[Assaf Patishi]

I see, my bad lol. I recommended Prime to make sure the CPU will boost but if your happy with the performance then there's no need to.

You didn't quite get me..I am not happy so far cause my CPU doesn't boost up to it's advertised speed (4.7/4.6) and stay at 4.3 all the time, even at single core tasks. I want to know what's wrong!

Do somebody has advice?

 

[marksavio]

if you ran the prime95 test with the settings i mentioned on my first post. that will get your chip to run at the max frequency/
if it still doesnt do it, it may be your PSU hindering the turbo boost feature of your chip.
whats the model of your power supply? again i am not familiar with your BIOS, so check somewhere about CPU settings. most boards have it by default ON, double check turbo boost setting.

 

[Assaf Patishi]

if you ran the prime95 test with the settings i mentioned on my first post. that will get your chip to run at the max frequency/
if it still doesnt do it, it may be your PSU hindering the turbo boost feature of your chip.
whats the model of your power supply?

I have Seasonic 850W its very good, I don't believe it's a bottleneck.
I appreciate the advice regarding prime, But I really prefer not to run prime on the shiny new cpu right now.
There must be another way to check this issue. Anyone here with 8700k can test if in stock settings he is getting the same behavior as me?