Overclocking i5-4690k, help understanding

[Jack378]

Hi everybody,

I've decided to experiment a little bit with overclocking since my system is starting to get old.

I've entered the bios and set 4.5 Ghz on all cores, core voltage manual ovveride 1.269v and Cpu cache voltage manual ovveride 1.169, disabled all speedsteps ecc, could not disable turbo mode, and no LLC

I also overclocked the ram not with the xmp profile but manually entering the latency values 10-11-10-30, speed 1866MHz voltage 1.50 as tested on the manufacturer's site (Corsair vengance LP two banks of 4gb).

While doing the stability test with AIDA64 everything went well for about two hours.

The day after while doing normal office activities nothing stressful for the cpu (word, outlook, browsing) it crushed (blue screen sad face error WHEA_UNCORRECTABLE_ERROR ).

So I raised the voltage setting the following parameters: 4.5 Ghz all cores with Cpu core voltage manual ovveride 1.27v and Cpu cache voltage manual ovveride 1.17.

Tonight I did the aida64 test again and the pc restarted by itself without any error screen.

A couple of weeks passed and no errors occured with 4.5 ghz, 1.27 cpu core voltage and 1.17 cpu cache voltage, plus the oc ram. Since I am working from home at the moment my pc was running all day long.

I have also played a few hours a demanding game such as Jedi Fallen order and all went well (actually it crushed but I guess it was because I've added the overclock of my GPU and went too far with gpu core clock boost)

Yestarday, again out of the blue while doing normal activities crushed (blue screen sad face error WHEA_UNCORRECTABLE_ERROR ). So I raised the voltage at Cpu core voltage manual ovveride 1.271v and Cpu cache voltage manual ovveride 1.171.

Am I doing something wrong?

Motherboard asus z97i plus
Noctua nh-d15
Temperatures are not a problem, the fans were running at low revs and anyway the temperature did not exceed 60 degrees.

I attach a system report showing current values

Any advice is welcome

 

[pendragon1]

Am I doing something wrong?

yes the voltage is too low for 4.5. bump the voltage up to 1.35 and then work your way down until it become unstable. i'd also bump your ram voltage a bit. every single set of corsair ram i have ever used needed and extra bit of voltage to be stable. if they are 1.3 up it to 1.35.
ps what is the ram rated for? those timings look odd...

 

[Jack378]

yes the voltage is too low for 4.5. bump the voltage up to 1.35 and then work your way down until it become unstable. i'd also bump your ram voltage a bit. every single set of corsair ram i have ever used needed and extra bit of voltage to be stable. if they are 1.3 up it to 1.35.
ps what is the ram rated for? those timings look odd...

Hi pendragon1,

Thanks for your reply.

As for the ram (https://www.corsair.com/it/it/Categ...CL10-DDR3/p/CML16GX3M2A1866C10#tab-tech-specs), I've inserted the values indicated on the website, with the voltage being now 1.50 (see screen attached).

Would it be better to use the xmp profile? I've red that when you OC your cpu it is preferable not to use xmp and set the values manually.

As for bumping the voltage, is it safe to go straight to 1.35? How do I know when it becomes fully stable?

I mean all the stability tests I've done went well, and the last BSOD whea error happened after at least a couple of weeks of total normality with everything going smoothly.....

 

[pendragon1]

Hi pendragon1,

Thanks for your reply.

As for the ram (https://www.corsair.com/it/it/Categ...CL10-DDR3/p/CML16GX3M2A1866C10#tab-tech-specs), I've inserted the values indicated on the website, with the voltage being now 1.50 (see screen attached).

Would it be better to use the xmp profile? I've red that when you OC your cpu it is preferable not to use xmp and set the values manually.

As for bumping the voltage, is it safe to go straight to 1.35? How do I know when it becomes fully stable?

I mean all the stability tests I've done went well, and the last BSOD whea error happened after at least a couple of weeks of total normality with everything going smoothly.....

some times setting ram manually is more stable.
1.35 is the max you want for safe daily usage. if it seems mostly stable where you have it now you might not need to go that high, maybe bump it to 1.3v and see how it goes for a while. then if its good you can try and lower it a bit more at a time until the bsods come back.