overclocking 4670k on Asrock z97 extreme4

[GMAN2014]

hey guys and girls,
I cannot seem to get my 4670k on Asrock z97 extreme4 motherboard stable beyond 4gigs.
It wont even go into Windows at 4.1 gigs, I thought these cpus could do at least 4.4gigs.
I got the vcore at 1.250v and ring bus at 1.9v.
Ive raised the vcore to 1.3v but no difference.
I do not fully understand all the options in the bios.
Is there anyone with same mb and cpu that assist.
Temps go up to about 60deg under load.

 

[DisturbedJim83]

I have the same CPU running at 4.4Ghz but alas I don't use AsRock boards had 1 bad experience with them and won't use them again, Personally I currently use a z87 Asus Maximus VI Formula and will likely upgrade to either the Asus z97 Deluxe/Maiximus VII Formula I just used AI Suite 3's 4 way optimization and its steady as a rock @4.4Ghz on 1.264V temps dont go above 62C with a Corsair H105 with 4 Corsair PWM SP120 Quiet editions in push pull.

Short answer is it seems you have a bad CPU, while the "average" 4670K will hit 4.4Ghz, getting 4.6Ghz is very rare and some people can't get theirs beyond 3.9ghz, its mostly due to poor quality TIM under the CPU lid without buying a new CPU I guess de-lidding is the only option and replace the TIM with something like Artic MX-4 but its risky and has no certainty of success.

 

[The_Governour]

I have a 4670k and I run at it 1.240v at 4.4Ghz and its stable - and I thought I had a shitty CPU that needed as much as 1.240v...... its a silicon lottery.

 

[Master&Puppet]

hey guys and girls,
I cannot seem to get my 4670k on Asrock z97 extreme4 motherboard stable beyond 4gigs.
It wont even go into Windows at 4.1 gigs, I thought these cpus could do at least 4.4gigs.
I got the vcore at 1.250v and ring bus at 1.9v.
Ive raised the vcore to 1.3v but no difference.
I do not fully understand all the options in the bios.
Is there anyone with same mb and cpu that assist.
Temps go up to about 60deg under load.

What have you set your memory to? This can have an effect on cpu OCing. You need to start changing one thing at a time, start by dialling in the memory as it says on the sticks, then start clocking the CPU leaving the ring at stock, then up the ring once all that went before is stable.

 

[GMAN2014]

Hi,ok, got it up to 4.2 gigs stable.
Ring bus voltage was the issue, set it to 1.8v and pc is very stable, i actually did not set the override ring bus volts as previously thought, was another setting I tinkered with, bios is so complex, all new to me.
Ring bus cache is at 3500 and cpu volts at 1.250.
Memory is at default speed of ddr2000-9-9-9-24 @1.6v.
Thanks for the advice, im not planning on going higher than 4.2gigs.

 

[tinytomlogan]

Hi,ok, got it up to 4.2 gigs stable.
Ring bus voltage was the issue, set it to 1.8v and pc is very stable, i actually did not set the override ring bus volts as previously thought, was another setting I tinkered with, bios is so complex, all new to me.
Ring bus cache is at 3500 and cpu volts at 1.250.
Memory is at default speed of ddr2000-9-9-9-24 @1.6v.
Thanks for the advice, im not planning on going higher than 4.2gigs.

Thats pretty low speed for the cache with really high volts

 

[stampedeadam]

You should be able to get more out of it than that. Try raising the ring bus to 2.05 and go up another notch or two on the core muti. Also if possible raise the cache/uncore multiplier to better match the core speed. Unless your chip is really bad you should have plenty of room to put the uncore multi up with the voltage you've already set. Remember at stock settings and volts the chip runs 1:1 ratio on core/uncore so on turbo uncore will run to 3.8ghz (38x).