Im trying to overclock my i4770K on Asus Maximus VI Formula

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AronChan

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Hi guys

Im trying to get a decent overclock on my i4770K cpu. I just cant seem to push it past 4.2Ghz without instability issues. Is it really just me having bad luck on the draw of the CPU or am i doing something wrong?

Im running a XMP profile on my ram

Im running all cores synced to 42 (tried different multipliers from 40-47)

The cache ratio is 42

Ive fed the cpu with voltages from 1.25 to 1.3. Even at 1.3 i cant achieve a stable overclock of 4.4ghz

When i use the CPU level up build into the motherboard it is not able to boot at all.. not even at 4.2ghz

My rig is written detailed in my profile.

What am i doing wrong or did i just get a bad OC cpu?
 
Solution
mapesdhs
Blimey, the fact that it's that hot even with a decent water cooling setup shows just how
much harder it is to deal with HW. A used TRUE for 10 UKP and two boring fans was enough
to get mmy 3rd M4E/2700K setup running at 5.0 with ease.

Hmm, your chip could just be an unlucky sample I suppose.

I found this comment in toms' review of the 4770K, referring to what one can expect from
retail 4770Ks:

"Most are solid at 4.3 GHz and down. As you stretch above a 1,600 MT/s memory data rate
or a ring ratio to match your highest single-core Turbo Boost ratio (which helps maximize
performance), your top stable core frequency tends to drop. ..."

Ian.

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mapesdhs

mapesdhs

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What type of cooling are you using for your CPU? What temps are you getting during the oc testing?

Your RAM is a good model (I have many of those), but try setting the timings manually, and try running
at 2133 instead of 2400.

I have an older board (ASUS M4E) with a 2700K @ 5.0, TridentX 32GB/2400 kit, but the RAM is set to
2133 with 9/11/11/29/2T timings.

Ian.

 
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AronChan

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PC Cooling
Radiator: HW-Labs Black Ice SR-1 480
CPU block: EK Supremacy Plexi
GPU block: EK FC680 DCII Full Cover
Rad Fans: Corsair SP120 Quiet Edition
Pump: EK DCP 4.0
Reservoir: EK Res X3

during stress tests ive never passed 79 degrees celcius
 
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mapesdhs

mapesdhs

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Blimey, the fact that it's that hot even with a decent water cooling setup shows just how
much harder it is to deal with HW. A used TRUE for 10 UKP and two boring fans was enough
to get mmy 3rd M4E/2700K setup running at 5.0 with ease.

Hmm, your chip could just be an unlucky sample I suppose.

I found this comment in toms' review of the 4770K, referring to what one can expect from
retail 4770Ks:

"Most are solid at 4.3 GHz and down. As you stretch above a 1,600 MT/s memory data rate
or a ring ratio to match your highest single-core Turbo Boost ratio (which helps maximize
performance), your top stable core frequency tends to drop. ..."

Ian.

 
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Solution
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AronChan

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Could you elaborate a little on that? I know alot about hardware but im not 100% in the trifecta of cpu, mb and ram when it comes to clock speeds etc
 
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kiezz

kiezz

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you should try with your cpu cache at 40, ram set at 1600mhz and make sure your cpu input voltage manually to 1.85v and core volt set to adaptive leave the figures set to auto, then try 4.3ghz core clock,
download realbench from asus http://rog.asus.com/rog-pro/realbench-v2-leaderboard/ use a program like hwmonitor to keep an eye on voltages and temps run the stress test in realbench and you will find out what voltage is needed to keep 4.3ghz stable,
DO NOT use adaptive voltage with prime95 or intel burn test,
after you get your core clock stable then you can try higher ram speeds and higher cpu cache but for best performance get your core clock right first
 
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AronChan

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Hi. Thanks alot for the input.

Isnt 1.85v very high? most OC guides recommend between 1.25 and 1.3
 
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kiezz

kiezz

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Cpu core voltage is recommended to be 1.25 -1.3v with a decent cooler, cpu input voltage is a different voltage and it should be at least 0.5v higher than cpu core volt,
1.85 will give you headroom to eliminate that as the source of your instability,
You should look up the guides on Asus rog website to learn about the options and settings for your motherboard

 
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M

MFBLO96

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Overclocking has no guarantee at all. Some chips overclock well, and there will always be the lowest percentile of chips.

I know older generations overclocked to higher speeds and what not... But each generation has been a 10% improvement in performance over the previous. A 4770k at 4ghz is the same performance of a 2700k at 5ghz.

Speed isn't all that matters
 
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mapesdhs

mapesdhs

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I've checked a lot of results submissions, no way is a 4770K at 4.0 as fast as a 2700K at 5.0.
A 4770K needs to be about 4.3+ to match a 2700K @ 5.0. My point being though, the cooler
cost for a 2700K is much lower, so the money saved can go towards a better GPU, which is
what matters for a gaming setup. Give me the same budget, I can build a much quicker system
based on a used 2700K. It would be different if HW didn't run so hot, if one could oc to the
same speeds, the speedup from the IPC aswell would make HW much more interesting as a
general upgrade, but not atm, not when it needs costly cooling to take a 4770K safely beyond 4.4.

kiezz is right about the ASUS ROG guides, they're very good, well worth reading.

Ian.

 
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AronChan

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Im afraid i just have a really crappy CPU in terms of overclockability. :( Ive decided to settle for 4.2 Ghz on all cores since thats where i feel most comfortable when it comes to temps and stability. If anybody has any idea why i cant go higher than that i would really like to hear from you :)
 
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mapesdhs

mapesdhs

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Something I did when I couldn't reach a target clock was try to find people on relevant forums who had similar
or even identical setups (mbd/cpu/etc.), ask what settings they were using, temps, etc. Sometimes it can
be something as simple as a HS that wasn't quite fitted properly, though as you say it could just be luck of
the draw with your particular CPU.

Ian.

 
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