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  1. #1
    ROG Guru: Green Belt Array Qwinn PC Specs
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    MotherboardRampage V Extreme - BIOS 3301
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    Very odd overclocking results

    Okay, so I'm still fairly new to overclocking, just started it a month or so ago, but I've been doing very little else in that month. I've read many dozens of threads on the subject specific to my hardware (5930k processor). And it's really odd, but my system seems to be defying conventional wisdom in several ways.

    Conventional Wisdom 1) "Don't use autotune, it will run at higher voltage than necessary. Go manual."

    Actually, autotuning with AI Suite and with CPU Level Up in the BIOS, and then tweaking the multiplier, I eventually wound up at an ultra-stable 4.5 Ghz 3.8 Ghz cache overclock, which is Adaptive Mode 1.2v core, 0.75 offset. In practice, running various stress tests such as XTU and 5 consecutive Realbench benchmarks while monitoring with HWINFO64, the voltage never goes above 1.2922v. Which, from my various reading, is actually a pretty damn decent overclock for even manual 1.3v, let alone adaptive that never goes over it.

    Conventional Wisdom 2) I know what some of you are already thinking based on that last paragraph. "ARE YOU NUTS? NEVER EVER EVER RUN STRESS TESTS IN ADAPTIVE MODE!!!!!" I hear this everywhere. And yet, smooth sailing every time, as I said, I can run 5 consecutive Realbench benchmarks smooth as silk with the adaptive mode set up as above, and never ever spike as high as 1.3v. Temperatures max out at 67c. Granted, I didn't knowingly run any AVX tests, but still.

    Now back to conventional wisdom 1 above. I figured, if manual is supposed to always be more stable at lower voltages, maybe I can try manual 1.29v and see if I can raise my OC to 4.6? Worth a shot, right? No. I can't even get 4.5 Ghz with clock cache frequency stable with manual 1.296v. I certainly did not expect this. If adaptive mode never clocks over 1.29v at 4.5Ghz, how the heck could it *not* be stable at constant 1.29v? And yet, there it is. I crashed at the end of my first Realbench benchmark that way.

    Incidentally, if I stay in adaptive mode and go 46 multiplier, that appears to be totally stable too, tho I then can have the voltage get as high as 1.31v. Gets a little hotter too, though, which I know the chip could tolerate perfectly well, but the actual Intel "Max operating temperature" specification for the 5930k is only 63c, somewhat surprisingly given how virtually every thread out there says the limit is around 80c if not higher. I think at 4.6Ghz, where voltage goes to 1.31xx, temperature goes up to 70c. I know it's probably fine, and I can run Witcher 3 in 3D on almost all ultra settings without ever seeing CPU go over 60c. But everyone seems to say that 1.3v is the maximum safe voltage, so I guess I'll stick with that. Then again, given all this, I'm questioning *all* the conventional wisdom right now.

    Anyways. Am I right that these results are pretty freaking odd? Would appreciate any feedback.

  2. #2
    ROG Guru: Gold Belt Array Menthol PC Specs
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    MotherboardM 10 Apex / XI gene
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    Sounds like you have a good overclock using AISuite, conventional wisdom is if it works well for you great. many people use adaptive voltage while overclocking and benching, myself included no both X99 and Z170 rigs, I manually enter all my values though, myself 75 degrees c is the target to keep my temps under, I'm not as worried about voltage as much as temps, it's all about your cooling

  3. #3
    ROG Guru: Black Belt Array Korth PC Specs
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    A lot of folks here disdain auto-overclocking tools. You can get finer control in BIOS. You can manually achieve better final overclocks.

    This is all true enough. Especially since Asus doesn't know the particular quirks of your particular piece of silicon.

    But the Asus overclocking software is after all based on years of research and input from world-class overclockers. Asus engineers are always striving to get their mobos achieve top OC records. And chances are that any particular piece of silicon is going to fall within a statistically "average" performance profile for the part. And let's face it, we can't *all* be "above average" or "superior" overclockers, most of us (including me) have much less than expert knowledge on the topic, I doubt more than a handful of us could consistently achieve better OCs than the champions regardless of how many silicon lottery tickets are involved ... so it makes sense to start off with the advice they provide us.

    I think the Asus OC results are a good baseline to tweak off. Although once the software has configured a stable OC it should just be turned off, no need to let it continue mucking around with BIOS settings or distracting Windows with highest-priority firmware-level resource demands.

    I can't say much about your adaptive voltage results.
    If you think your reported temps are too odd then you might want to confirm them outside of firmware/software reporting tools, pull out a thermometer and measure them directly in hardware.
    If you have achieved a fast overclock which remains stable through stress tests then so be it, no need to worry about what you might have done "wrong" because all is well, lol. I personally don't consider an OC stable unless it can survive a full day of unattended uninterrupted stress testing, but most gamers are happy enough to call a system "stable" if it only spews out a BSoD after hours of hot and heavy gaming.

  4. #4
    ROG Guru: Green Belt Array Qwinn PC Specs
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    MotherboardRampage V Extreme - BIOS 3301
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    Thanks for the replies.

    It's not the temps that are weirding me out. It's the fact that a static overclock is less stable than an adaptive overclock that reaches the same frequency. Everything I've read says that static is supposed to be more stable. But as it stands, if I were to go static, I'd have to either raise voltage above what my adaptive reaches, or downclock. That's just weird. According to the conventional wisdom, I *should* be able to get a higher overclock at the same or lesser voltage as long as I was willing to trade off being at that voltage constantly. Oh well.

  5. #5
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    According to my very modest wisdom in these matters i think that leaving settings on auto might get you some oversafetyvalues. Maybe on manual those spikes that grange you stability on auto wont happen and it is why manual will get you errors, but that means your hardware could be at risk if it goes over the edge many times on auto... As for stability im still searching for my sweet spot, it is time consuming since I only think beeing stable after running 8 hours stress testing, usually overnight.
    Last edited by Pleot; 11-28-2015 at 12:46 PM.

  6. #6
    ROG Guru: Green Belt Array Qwinn PC Specs
    Qwinn PC Specs
    MotherboardRampage V Extreme - BIOS 3301
    Processor5930K @ 4.4 GHz Adaptive 1.27v / 4.2 Ghz cache Offset +0.27v / Input 1.92v / LLC7
    Memory (part number)G.Skill 32gb DDR4-2666Mhz 15-15-15-35-CR2 1.2v at XMP settings
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    You may well be right that adaptive mode is setting some other voltages (vccin? Ring? System agent?) that i have read about but didnt tinker with on manual, because i am noob. So my question now is, is there a way I can tell what those values are set to under load in adaptive, so I can try to duplicate them in manual? I really have no idea what good values are for the other settings or what they are actually set to when im in adaptive.

  7. #7
    ROG Guru: Yellow Belt Array
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    Some of the values you mention can be caught on the BIOS, right beside the auto you can read what is set there, what value auto setting is using. Aida 64 gives you some values as well, hwmonitor is good at returning voltages to...
    Last edited by Pleot; 11-28-2015 at 05:29 PM.

  8. #8
    ROG Guru: Green Belt Array Qwinn PC Specs
    Qwinn PC Specs
    MotherboardRampage V Extreme - BIOS 3301
    Processor5930K @ 4.4 GHz Adaptive 1.27v / 4.2 Ghz cache Offset +0.27v / Input 1.92v / LLC7
    Memory (part number)G.Skill 32gb DDR4-2666Mhz 15-15-15-35-CR2 1.2v at XMP settings
    Graphics Card #1Gigabyte Gaming G1 980Ti OC to 1455Mhz Core 8000Mhz memory at Stock Voltage
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    Bios is no good because they fluctuate and its not under load, but the other 2 may work, will try em tonight, thanks

  9. #9
    ROG Guru: Yellow Belt Array
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    Tried it just to see what would happen the system wouldn't boot, had to go back to manual.

    It also doesn't seem to work at all with high speed memory kits.

  10. #10
    ROG Guru: Brown Belt Array Vlada011 PC Specs
    Vlada011 PC Specs
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    Your overclocking results are OK.
    On your place I would keep 4.2GHz 1200V, Cache 3.5GHz 1.150V.
    I think that's best for long term use. These processors are strong and everyone like to OC but It's not good to push to the edge.
    I have one of better i7-3770K on 4.8GHz stable in all Prime95 tests over 12h on arround 1.300V but I keep him on 4.5GHz and he was safe from
    degradation. Today he need same voltage as first day for any clock. I thought with 4.8GHz I will not have improvements only I have risk if processor need more and more voltage, that's very bad situation.
    You see I overclock mine how much stock voltage allow, 4.0 Core 3.5 Cache... OK I didn't even try more...
    But I think little more and I need to increase voltage. I will keep that for future when stronger processor show up to catch his performance on stock frequency.
    Last edited by Vlada011; 11-29-2015 at 12:43 PM.


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