[Hormel09]

I've been trying to OC my i5-4690K with Darkwizzie's guide and the Yet Another Haswell Guide on /r/overclocking. Currently I'm at a multiplier of 45 on a Vcore@1.4V. Temps under load during the x264 stress test is at most 79C. Under these settings I can not complete a single loop of the x264 test; however, I can complete Cinebench, a POV-ray rendering, and play games. I'm trying to get it stable during the x264 stress test. These are the things I've tried.

• Tried Vcore all the way up to 1.45V with behavior set to override
• Tried VCCIN @ auto, 2.0 and 2.1V
• Varied Uncore ratio from 33 to 39. The stock for my board is actually 38, which seems high from what I've read online.
• Set Vring to auto and 1.2 override
• Set IO voltages to +/- 0.1V
• Set Sa volteage to + 0.1V

My methodology was to choose a core multiplier at a voltage and then try one change at a time of other parameters. It's hard to see any difference in the x264 stress test because it seems to crash at random percentages of completion during the test. The test usually crashes before 20% but on occasion gets past 50%. If I repeat the test with the same settings, it will crash at a different time. I did complete the test twice in a row after setting the I/O voltages to +0.1V, but was never able to do it again. I'm also including some screen shots of HWinfo while running x264.



Lastly, the VIDs of the cores seem to be rock solid under load, so that's good. If I can't get it stable under x264, I might just stick with this multiplier anyway if it doesn't crash in my day to day usage. Or if you have a method or stress test that I can get more consistent results from so I can more accurately see how may changes are affecting the stability, that would also be appreciated. Thanks in advance.

 

[Tjj226 Angel]

Post your motherboard and ram specs.

1.4 volts plus is pretty darn high. I would not feel comfortable at that voltage.

I think your issue for the moment is that you have not set load line calibration (LLC) in your bios. So you are just getting a lot of Vdroop.

 

[Hormel09]

I have an MSI z87-G41 PC Mate. Memory is currently @ 1333MHz with timings of 9-9-9-24. It has an XMP profile for 1600MHz, but I've never used it. Here are pics of the bios. Also a screenshot of the CPU OC summary from HWINFO.




I've read about LLC adjustments, but I haven't seen it in my bios. Maybe it's called something else? Do you see it in the pics above? In the HWinfo summary there is a section for "CLR (CBo/LLC/Ring Overclocking", but I don't know what is specific to LLC.

Voltage is high. I was hoping after finding the cause of the instability, I could back the voltage down. For now, I was leaving it there to make sure the cores weren't thirst.

 

[Tjj226 Angel]

Uhhhhhhhhhhhhhhhhhhhhhhh no.

This is not a settings issue, this is a hardware issue. You are using a cheap motherboard with next to no motherboard cooling and you are using a z87 chipset for a CPU that was designed for the z97 chipset.

Personally, I would suggest that you go back to stock settings and just focus on overclocking your memory.

I know you will want to overclock your cpu, but I would highly suggest you do not go beyond 4.2ghz with as little voltage as possible.

What you are doing right now is borderline suicidal.