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Can't get passed 4.0 on 4670k + ASRock Z87E-ITX!

post #1 of 12
Thread Starter 
This is going to be the death of me I swear! So I can boot all day @ 4.0Ghz w/ 1.200v...

I can run Prime95 and no issues at all, temps are great, about 55c load...


Now, if I change to 4.2 or 4.3. or 4.4 I can still boot, but cannot bench, about 5 seconds into the bench it will just reboot, no blue screen, nothing. Just reboot...

I can get back to bios, and the system POSTs but that's about it....

I have tried raising the vcore in .10 increments from the beginning 1.2 which was ok @ 4.0, all the way to 1.300 with the 4.2 setting and no luck... I think I actually get a little further into windows with lower vcore... But could just be me...

Here are my specs right now running at the 4.0. (The bios screens are what I am trying at 4.2 (every setting is same at the 4.0 curent setup, except the vcore on bios screenshots is at 1.275)


Any input would be greatly appreciated! Specs are in sig (pc part picker ITX)









cpuz-4670-5.JPG

cpuz-4670-6.JPG

cpuz-4670-7.JPG

cpuz-4670-8.JPG
post #2 of 12
I wonder what your stock voltages are. Can you post a screen shot of it? If its 1.1 and above, then its below average. if its 1.0 something, its average. If its in the .9 range and below, you have an excellent chip. I'm afraid from the looks if it you have a poor chip. thinking.gif
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by Sev7_d View Post

I wonder what your stock voltages are. Can you post a screen shot of it? If its 1.1 and above, then its below average. if its 1.0 something, its average. If its in the .9 range and below, you have anexcellent chip. I'm afraid from the looks if it you have a poor chip. thinking.gif

frown.gif
post #4 of 12
I had this same problem. I ended up using the 4.4ghz overclock option built into the bios and it can bench for days without any crashes. The second I disable the built in bios option and try and do it myself it's nothing but crash after crash even if I use the same settings. After a weeks worth of nights wasted i gave in and have stuck with the 4.4ghz option. I'd like to know if it's the chip of the mobo causing problems because I'm itching for a reason to get a new motherboard.
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post #5 of 12
Thread Starter 
Quote:
Originally Posted by d00bzilla View Post

I had this same problem. I ended up using the 4.4ghz overclock option built into the bios and it can bench for days without any crashes. The second I disable the built in bios option and try and do it myself it's nothing but crash after crash even if I use the same settings. After a weeks worth of nights wasted i gave in and have stuck with the 4.4ghz option. I'd like to know if it's the chip of the mobo causing problems because I'm itching for a reason to get a new motherboard.

Interesting.... I still think I am missing something, there has to be more people that have successfuly overclocked this board + cpu combo...
post #6 of 12
Btw I'm running the same chip and mobo as OP. I must be missing something too. Possibly old power supply not built to be haswell compatible? I just got a new power supply so I'll try again tonight after I install it to see if there is a change.
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post #7 of 12
Try increasing cache voltage.

thumb.gif
post #8 of 12
Quote:
Originally Posted by d00bzilla View Post

Btw I'm running the same chip and mobo as OP. I must be missing something too. Possibly old power supply not built to be haswell compatible? I just got a new power supply so I'll try again tonight after I install it to see if there is a change.
the haswell psu compatability only affects ultra low power states at idle.
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post #9 of 12
Have you checked for bios updates? Each bios update I did made overclock easier. Z87 is still pretty behind in terms of bios stability. The current beta Bios I'm on let me hit 4.5Ghz far easier and with less voltages than previous versions.
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post #10 of 12
Thread Starter 
Looking at a bios update now smile.gif will do some tests later, and I will post back. I may try raising cache voltage and also doing a few other things....
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