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Overclocking stability issues with i7 4770K / Asus Maximus Gene VI Z87

First of all I'd like to point out that I'm a beginner to overclocking.

My setup:
Asus Maximus Gene VI
i7 4770K with Noctua NH-D14 Push/Pull CPU Cooler
4x4GB G. Skill 1600MHz
Asus Strix GTX 970

My stability testing routine
1. AIDA64 Memory tests (READ/WRITE/COPY/LATENCY)
2. Cinebench R15
3. Realbench benchmark
4. Realbench stress test for 15mins

Overclocking so far:
Stable OC
i7 4770K@4.4GHz
Ring Ratio 39 (Default)
1866MHz 9-10-9-28-2
CPU Core: 1.235
Ring Voltage: 1.20
System Agent Voltage: +0.250
Analog Voltage: +0.025
Digital Voltage: +0.075
DRAM Voltage: 1.5000

Unstable OC
i7 4770K@4.5GHz
Ring Ratio 42 (I read on overclockersclub that @4.5GHz this should be set to 42)
1866MHz 9-10-9-28-2

After Multiple tries I got upto the last part of my testing routine (Realbench stress test @ 5mins in)

Last tried settings:
CPU Core: 1.25
Ring Voltage: 1.25
System Agent Voltage: +0.350
Analog Voltage: +0.1925
Digital Voltage: +0.1925
DRAM Voltage: 1.5000

Any help if i'm getting into danger voltages or how to proceed from here would be greatly appreciated.
5 answers Last reply Best Answer
More about overclocking stability issues 4770k asus maximus gene z87
  1. Might need a little more vCore, the 4770K are all over the place as far as individual CPU capabilities, I have two of them and one OCs about .2 higher than the other on both my rigs, one tops about 4.6 the other 4.8 but many are much lower

    http://www.hardocp.com/article/2013/06/01/intel_haswell_i74770k_ipc_overclocking_review/6#.VeSr1flVhBf
  2. Unstable as it doesn't post or fails benchmarks ? Try setting ur ram to default clock, maybe even lowering it. With voltage just stay under 1.3 V as long as ur temps are less then 70 which they should be
  3. Tradesman1 said:
    Might need a little more vCore, the 4770K are all over the place as far as individual CPU capabilities, I have two of them and one OCs about .2 higher than the other on both my rigs, one tops about 4.6 the other 4.8 but many are much lower

    http://www.hardocp.com/article/2013/06/01/intel_haswell_i74770k_ipc_overclocking_review/6#.VeSr1flVhBf


    Thanks for the info and sorry for the late reply.

    I cleared the CMOS and started over this time changing only CPU Core ratio to 45 and entered manual Vcore Voltage to 1.25v. The result was a BSOD while benchmarking in Realbench. I then upped the voltage to 1.265 and almost finished the benchmarks but temps were 80-81 degrees (It's hot where i live and no AC)
  4. madchemist83 said:
    Unstable as it doesn't post or fails benchmarks ? Try setting ur ram to default clock, maybe even lowering it. With voltage just stay under 1.3 V as long as ur temps are less then 70 which they should be


    Hi there.

    When you say my temps should be less than 70 you mean normal use or synthetic stress tests?
  5. Best answer
    Would you be willing to try running a 45 multiplier on the first two cores and say 43 to 44 on the last two.
    I have a similar system and this is how I touch 4.5

    Hope this helps. And try keeping ram frequency as low as possible. The higher you go with your 4770k's frequency the lower your ram headroom gets. So once you dial in a nice cpu overclock go ahead and tweak your ram, but only after and not before.
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