4690k overclocking

Hardware Hub CPU
1

so I recently purchased a noctua NH-D14 and wanted to do some crazy overclocking (I'm at 4.5ghz atm)

but after I installed it, I noticed core #3 is running about 2-5c hotter than the rest.

now using my previous overclock, which was 4.5ghz @1.255v (its that high since I would get random crashes in CSGO)
the noctua idles around 32, under Aida64 hits a max of about 65-70c, intel burn test, hits 80c with a few spikes up to 85. but prime95 starts at 60c, then slowly creeps up to 95c and my computer crashes.

How do I improve stability? should I be tweaking the cache ratio and voltage? did I apply thermal past incorrectly?

2

additional information, I'm using artic silver 5, did a pea in the middle.

and I can get stable using intel XTU and aida64 can run for days without issue

3

Don't use prime95 for haswell based CPUs, they don't play well together.
1.255v isn't high, 1.3v is safe as long as you keep the thing cool.

You should leave cache alone for the most part, not much to gain there, but bumping your system voltage, CPU input voltage and cache voltage slightly can help with stability.

4

ok so I'm not crazy if p95 is bonkers, so just keep voltages being bumped up slightly should be fine - aka what I usually do

5

CPU input voltage, CPU vCore, cache voltage, PWM switching frequency and Load Line Calibration can all help with stability.

For a 4690K 1.3V is safe, and some settings I'd recommend would be:

vCore: 1.3v
Cache: 1.15v
LLC: 25% (or Level/Phase 2)
PWM: 400KHz (If available)

If you are already stable-ish at 4.5GHz these should get you to 4.7GHz. You can also sometimes control temps by setting your Load Duration Limit to 2-4 seconds. Doesn't work with every scenario, doesn't hurt.

6

ok thanks, when I get home from work tonight I'll let you know how it goes.

7

Well arctic silver has instructions for each CPU and the Pea is not the correct method to apply thermal paste on a 4690k.
http://www.arcticsilver.com/intel_application_method.html#

the direct link to the i5 is Here

I am not saying this is exactly why, but it Could be contributing to why the core is high.

8

ok I looked at that, I'll do that methode next time I reseat the heatsink (if at all) the temp difference seems to be droping to about 1-2c so I guess the as5 is settling i.

@Fouquin yea taht worked, I'm more or less stable atm, just doing stress tests atm, wanna do intel burn test but scared that might over heat it.

LLC is set to level 2 (Asus z97-a) and PWM isn't available to my knowledge.

thanks for teh input, only issue is now I want to do 4.8ghz..... best not to.

1 Like
9

Yeah as5 has a fairly long burn in period compared to some other pastes.

I am happy the temps are coming down a bit.

10

I think a pea will be fine however, since thats what I did on my previous heatsink it was pretty evenly spread over it, except for the part of the heasink that wasn't even on the CPU since Enermax makes some really loose fitting heatsinks....

11

ok intel burn test causes the system to crash I think, but I think thats from overheating.

12

ok 4.7 isn't stable at all, I think my chip has a voltage wall, I couldn't get it stable at 1.35v and I don't want to go any higher, I'm going to settle for 4.6.