Can't reach 4.5GHz.

[Musashi117]

Hey guys,

I finally built a new system and after a few weeks I decided to try and overclock and my goal is to reach 4.5 GHz. I have been doing a stress test for the 4.5 GHz and the systems keeps on crashing, but today I can't seem to raise the multiplier to 45. In the BIOS, the Core multiplier is 45, but according the CPU-Z and OCCT the multiplier is 43. I don't seem to fix this issue and try to raise it to 45. I did a BIOS stock settings and then readjusted the settings back to 45, but it still gives me 43. Thanks for any future help.
I can run 4.3 GHz at 1.2V and highest temp during OCCT stress test was 64 C

System Specs:
CPU: i5 3570K
CPU Cooler: Cooler Master Hyper 212 EVO
GPU:Gigabyte GTX 660 Ti
Mobo: Asus p8z77-v lk
PSU: Rosewill Green 630W
RAM: Corsair 8GB with Heat Spreader
Storage: Seagate 2TB

 

[airdeano]

you might try and reset to the optimized defaults and retry your settings.
sounds like to switched something off mistakeningly.

usually there are two or three places to set the CPU multiplier, depending on BIOS
and board. once i turned the turbo off.. the BIOS reset the settings and i had to
re adjust all my multi and voltage settings..
are you following TTL's Guide to Overclocking?
if not, you might read/reread the steps..

 

[Master&Puppet]

Also - have you updated your BIOS? Often issues like this can occur just from a bug which has been fixed in later versions.

 

[Musashi117]

I have updated my BIOS and I did a reset the settings in my BIOS and now the system won't boot, I get the BSOD (says Memory Management as the problem) at 4.5. When I up the voltage to fix this problem on RAM and VCore I get apc index mismatch.

 

[Master&Puppet]

Well assuming you don't get that at error at stock (which would probably be a driver error) then that's a sign of overclock instability.

Take some screenshots of your BIOS setting pages so that we can see what you've got in there.

 

[Musashi117]

Okay, but for now I set the BIOS back to 4.3. I'll post the pictures ASAP.

 

[D33M0]

have you tryed to set the memory up to a lower setting, i have seen asus boards that clocked the ram while OCing the CPU.

 

[Musashi117]

So I decided to remain at 4.3GHz, but now all my games kept on crashing and sometimes I get BSOD. Unfortunately I didn't read the error message quick enough. I then used the Asus OC Tuner setting and viola no crashing, but what annoys me is the VCore setting is set to auto. As soon as I changed the VCore settings I kept on getting the BSOD. What do I do?

Edit: Asus OC Tuner makes the bus 102 and the frequency 4.1GHz.

 

[Mgutierrez33]

mmmmmmmm... that's a little disconcerting... I have had bad personal experience with the Asus OC tuner so I would be dreadfully careful with that one. What Vcore do you see during testing with using the OC tuner?

 

[Musashi117]

1.384V on OCCT with AVX Capable Linpack. When I try to do a manual overclock from OC Tuner. It is still unstable. I have no idea why, the only thing I change is the VCore.

 

[Mark3Max]

It sounds to me like you need to set everything in the bios back to auto or factory settings then reboot and try again, somethings not right , 1.384v is too high.

 

[hdeezie80]

First do what mark3max suggested and reset your settings, for overclocking set your AI tweaker mode to XMP profile, this sets your ram at its advertised speed, if the ram voltage is 1.6v set it back manually to 1.5 to prevent heat. The reason your clock speed is showing up as 4.3 is most likely because you have EIST on, go into the cpu power section of the advanced configuration tab in the BIOS and set EIST, and all your C states off these are all power saving features, in the same menu you should be able to set your CPU multiplier you want to make sure this one is set to your desired clock speed, the CPU frequency for AI tweaker applies to turbo ratio which is only applicable when EIST is on it should be the same as your CPU multiplier. 1.35 Vcore at 4.5 GHz should be more than enough for a 3570k, but you should set your initial clock to 4 ghz at 1.2 then up your multiplier by 2 and voltage by .5 each time, running prime for about 5 minutes to check your temps each run until you are hitting about 70c then lower your voltage gradually aim for 1.35 max vcore. also set your CPU current capability to the highest setting aswell this will allow it to maintain a higher Vcore and pull more power.

 

[Musashi117]

I turned off EIST and now the core clock shows 4.1GHz when I did 4.5GHz.

I think it is bad now that I went down to 4.3GHz and it only shows up to 4.1GHz.

 

[airdeano]

if there was only a way to see these issues that you have...hummm

i'd say a picture is worth a thousand words...
a picture, screenshot, cave drawing, something... all the suggestions should have
some bearing on your issue. and that AI tuning is tuning a stable overclock with
pre-programmed high voltage and you can not. so there is a switch or something
in your OC that is/is not present to make your system stable.
my asus board(s) seem to do fine with minimal effort. so either your chip is
weezed, the mobo is foul, or an underlying issue that hasn't been explained yet.
pictures, please

 

[hdeezie80]

I turned off EIST and now the core clock shows 4.1GHz when I did 4.5GHz.

I think it is bad now that I went down to 4.3GHz and it only shows up to 4.1GHz.

first make sure you are not setting your frequency through the AI tweaker screen, you want to set frequency in advanced -> cpu settings and are you using software to overclock or are you doing this all through the BIOs? then did you turn off your C states especially C1E? then are you because these all allow the CPU to change frequency being sleep states which are really unnecessary for a desktop PC. If all the power saving features are off than you experienceing thermal throttling and need a better cooling solution, try grabbing a H80 or H100. Try in windows going to power options (press the windows key then type in power), and set it to performance. If none of that works than just go ahead and buy a z68 board, or a 3570k, reset your board first and post what you change first though, I just built my cousin a rig with the P8z77 lx v so I'll try to check it for you

EIST and C states have to be disabled to keep a constant clock speed though

Also download HW monitor and post what your motherboard temperatures are SB pulls more power than IB so your board may be overheating and down clocking your CPU, I know some of the ASUS p8 boards dont have heatsinks over the VRMs