4670k overclocking, cache ratio/voltage

[Guitarwolf]

So I've been overclocking my 4670k in the past 24 hours and found it's stable at 4.3GHz (43x) and 1.230V under Aida64 for 12 hours.

I haven't really touched any other settings other than change the cache voltage to 1.200 however I don't know if that is actually helping the stability. My cache ratio is still set to auto. My question is, what should I do with the cache ratio? Google seems to suggest a 1:1 cache ratio or should I set it to 43, the same as my CPU core ratio? Would 1.200V be enough for that ratio? Or is leaving it at auto the best thing to do?

Secondly, according to Linus' overclocking guide he suggested turning on adaptive voltage. Will this affect stability in anyway or am I safe to turn that on?

Any other overclocking suggestions would be great. I'm pretty happy with 4.3GHz, I could probably push it further while staying under 1.3V but I think I've hit the safe temperature limits with my D14 (80-85C) while it's under the Aida64 stress test.

[Quick-]

I set the cache ratio to be the same as the clock, maybe .1 less.  It normally requires less voltage also, mine takes .05 less.

 

I'm running my 4670k at 1.25V at 4.5Ghz, cache is also 4.5Ghz with a voltage of 1.2.

Voltage on Adaptive.

Max temps around 85C with a 212 evo, using Intel Extreme test

[Guitarwolf]

Thanks QuikShot. I'll try manually setting the cache to 4.3GHz and see how it goes for a few hours under Aida64.

Do my temperatures seem a bit high for a Noctua D14? The ambient is about 31C at the moment (it's summer here ).

[geogga]

You should try to get around 70s, running 85 all the time/most of the time will put out big heat. Adaptive voltage is for normal use, like when ur on the desktop it is base clock, then it runs overclocked when it's CPU demanding. Manual is what you are supposed to use when benchmarking/overclocking, because nothing changes(clock/voltage) which makes it more stable, unless you crash, you know what to do.

[Guitarwolf]

You should try to get around 70s, running 85 all the time/most of the time will put out big heat. Adaptive voltage is for normal use, like when ur on the desktop it is base clock, then it runs overclocked when it's CPU demanding. Manual is what you are supposed to use when benchmarking/overclocking, because nothing changes(clock/voltage) which makes it more stable, unless you crash, you know what to do.

It only reaches 85C under Aida64, Prime95, etc. Under a normal load like BF4 it reaches about 65C.

[geogga]

That's still crazy high even with a D14. Lower voltages. My 4670k when at 4.5 before was ~45, under bench was ~70.

[Quick-]

That's still crazy high even with a D14. Lower voltages. My 4670k when at 4.5 before was ~45, under bench was ~70.

Those numbers are ridiculous for Haswell, I find it hard to believe unless it's water cooled.  65C while gaming seems to be generally accepted as good with them.  You must have gotten a lucky chip...

 

 

OP.  When overclocking Haswell, people normally shoot for <90C while stress testing.  As long as you're keeping staying below that you should be good.

 

Use this guide for reference.  http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/

[geogga]

My 4.5 needed atleast 1.3, and that doesn't include the ratios yet. I wouldn't consider that lucky lmao.

Check this out plz, http://www.overclock.net/t/1411077/haswell-overclocking-thread-with-statistics

don't think you have seen good chips yet lol... Personally, I recommend should shoot for <85, 90 is pushing it.

And you have a D14 so you probably have a below average chip th those temps...

[Guitarwolf]

Hey guys,

I've finally finished overclocking. I settled with 4.3GHz 1.235V and 3.9GHz cache at 1.2V. The VCCIN is set to 1.8V and it's 12 hours intel extreme tuning utility stable.

I could probably push it further but I have to give it some serious voltage to get the core past 4.3GHz or the cache past 3.9GHz which I don't think is worth a mere 2.5-5% increase in performance.

Anyway here's my hwmonitor readings from 12 hours of stress testing. Do they look alright?

[scottPGplayPC]

Haswell i hear doesnt like using fast RAM the higher the O.C. if you have 1600 RAM then nm. Have you tried looking up your i5's BIN # to see if it falls under the good( OC champ) or bad(cries if its a hot day) category? I have an i7-4770k using an H80i and i get idle temps of Low(17)High(21), 100%Load temps of Low(76)High(80) with a 24/7 4.2Ghz O.C(on all cores)

@ 1.2 Core Volt Manual(havent tried lower,lazy). and i leave Cache Volt on adaptive. I keep my multiplier @ 42x, and my BCLK at 100Mhz. 
I have a video of my Rig here(last week i sold my 660's for a Asus DirectCUII oc770 ) 

 What i suggest is go through BIOS, reset to default,set RAM to XMP profile 1 and reset computer. go back into bios and set all 4 core to 43(4.3Ghz), set cache ratio min to 41 and max to 42,set cache voltage on adaptive, set core volt to 1.24. boot(if it boots then merry christmas{lower by 1 decimal place until it doesnt boot, then go up by 1 decimal place for further lowering temps}, if it doesnt then go up by 1 decimal until it does, AVOID 1.300v though at all costs unless you have Liquid nitrogen or something of the like lol Way too much heat otherwise and a fried chip potential like crazy. Also , AIDA64 shows a usage that is never normally ever seen if you just play video games, so if your seeing high 70's doing an FPU stress test then your riding well, so stop testing the damn chip and treat it like a baby for the rest of time. Love it, care for it, embrace its performance lol   get an H100 if you wanna go crazy. i do recommend that one(H80i can be a noisy bugger)

I also apologize if i missed the point to this thread. i am kinda tired and it is 4:30pm now so...