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Thread: Bad overclocking with a Z87X-UD3H and 4670K.




  1. #1
    quetzalin is offline Junior Member
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    Unhappy Bad overclocking with a Z87X-UD3H and 4670K.

    Hello!,

    I'm kinda new to Haswell overclocking, at the moment i'm trying to overclock my 4670k up to 4,2GHz. The past few days i've been reading quite a few guides and followed some forums about how to overclock Haswell processors with this motherboard.

    So far i managed to get up to 4,1GHz but the OC is not 100% stable, the benchmark i'm running is OCCT and won't last more than 1 hour until my computer reboots :( .

    My PC specs are the next:

    Intel 4670K
    Cooler Master Hyper 212 EVO
    Gigabyte GA-Z87X-UD3H (i'm running the very last beta bios F10a but also ran the last stable bios F9 with the same results).
    16GB Kingston HyperX Predator DDR3 1866 PC3-14900
    PSU is a Corsair AX760

    My OC values are the next:

    - CPU Base Clock: 100MHz
    - CPU Clock Ratio: 41
    - CPU Vcore: 1.250v (and i think it is already very high... can't get it higher than that or i will run more than 70 while benchmarking).
    - CPU VRIN Loadline Calibration: Extreme
    - CPU VRIN Current Protection: Extreme
    - PWM Phase Control: HighPerf
    - CPU VRIN External Override: 1.8v (also tested 2v).
    - CPU RING Voltage: 1.2v
    - There is a parameter called "K OC" i don't really know what it does, it is set to Auto but you can also Enable or Disable it.
    - Didn't change Uncore ratio at all (set at Auto, i think it is 34x).
    - Other voltage values are set to Auto (didn't touch anything related to RAM since i don't want to OC it - Ram X.M.P is set to Profile1 so it is running at default speed aka 1866MHz).
    - Also disabled anything related to power save like C1E, C3, C6/C7, Thermal Monitor and EIST.
    - Turbo Boost is disabled so all cores are running at the same speed.


    As i said, the benchmark runs for about 1h until my computer reboots (this is with 4,1GHz), the max core temperature it reaches is about 70 degrees so i can't really raise my VCore anymore not until i change my cooler.

    I've seen some people getting up to 4,3GHz without much hassle and even with a lot lower VCore.

    So, i'm here to ask what i'm missing, if there is a value i should change, if my processor is really awful or if something is wrong with my motherboard.

    Thanks a lot!
    Last edited by quetzalin; 04-23-2014 at 06:29 PM.

  2. #2
    stasio's Avatar
    stasio is online now GIGABYTE Elite
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    Default Re: Bad overclocking with a Z87X-UD3H and 4670K.

    Maybe more info here:
    Haswell Overclocking Guides / Results

    Btw,
    Haswell max. temperature is 100C.
    GA-Z170X-SOC Force , Kaby Lake...
    GA-Z97X
    -SOC Force ,
    Core i7-4790K @ 4.9 GHz
    GA-Z87X-UD3H ,Core i7-4770K @ 4.7 GHz
    G.Skill F3-2933C12D-8GTXDG
    @ 3100 (12-15-14-35-CR1) @1.66V
    2xSSD Corsair Force GS 128 (RAID 0), WD Caviar Black SATA3 1TB HDD,
    Evga GTS 450 SC, Gigabyte Superb 720W
    XSPC RayStorm D5 EX240 (Liquid Ultra)
    NZXT Phantom 630 Ultra Tower
    Win 7 SP1 x64;Win 8.1 x64;
    Win 10 x64

  3. #3
    boondocks's Avatar
    boondocks is offline Senior Member
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    Default Re: Bad overclocking with a Z87X-UD3H and 4670K.

    If you look around the net you will find that there is a large range of voltage for what is "stable" for Haswell. For example I run x47 all the time with 1.265 Vcore with a 4770K while many people can't even get x45 stable without more voltage.
    Some of the guides on the net will help you decide if you need more vcore, vring or vccin.

    You should probably set the uncore manually to make sure it does not increase by itself; increasing the uncore isn't going to do much for you anyway except in some benchmarks. One program to accurately monitor uncore & vring is HWINFO.

    This link has some statistics & feedback that might help you:
    Haswell Overclocking Guide [With Statistics]
    Maximus 8 Hero/6700K @ 4.8/4x4GB LPX @ 3200 15-17-17-36 CR1
    Case Labs SM8 w/dual pedestals / Custom water w/ acrylic pipe / Light box
    PowerColor 390Xw/EK block / Samsung 840 Pro 256GBx2 RAID 0 / 128GBx1 SSD's | 3 HDD's / DVD burner
    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

    Wifes: Z77X-UD5H / 3770K w/c with Raystorm copper block & 2 Rads/ Kingston HyperX RAM / Switch 810 case/ PowerColor AX7950 w/EK block
    HTPC: Z68 Pro3 M / 2105

    SOLD:Z97X-UD5H /4790K/F11b mod BIOS/4.8@1.38 4x4GB Kingston Genesis KHX24C11X3K4 2400 RAM 11-13-13-30
    SOLD:Z87X-UD5H /4770K


  4. #4
    quetzalin is offline Junior Member
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    Default Re: Bad overclocking with a Z87X-UD3H and 4670K.

    Thanks a lot for the answers!, I didn't know about the guide you posted boondocks, found it very useful.
    I already knew every Haswell is different and some can OC better than others, sadly mine seems to be pretty bad at it.

    So far i did some tweaks and managed to get it stable at 4,1GHz. OCCT stress has been running for 10h now and still going on.
    My temperatures are at around 68-70 (with a max of 79 for one of the cores).

    These are the values at the moment:
    - CPU Base Clock: 100MHz
    - CPU Clock Ratio: 41
    - CPU Vcore: 1.275v
    - CPU VRIN Loadline Calibration: Extreme
    - CPU VRIN Current Protection: Extreme
    - PWM Phase Control: eXm Perf.
    - CPU VRIN External Override: 2.0v
    - CPU RING Voltage: 1.2v
    - Uncore ratio: Manually set to 35x
    - C1E, C3, C6/C7, Thermal Monitor and EIST are still OFF.
    - Turbo Boost still disabled too.

    I think what helped the most was setting the Uncore ratio to a manual value, i thought leaving it to Auto the bios wouldn't change it at all but i guess it did. Also increasing the Vcore a bit also helped, i guess.

    Thanks again!

  5. #5
    boondocks's Avatar
    boondocks is offline Senior Member
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    Default Re: Bad overclocking with a Z87X-UD3H and 4670K.

    Setting C6/C7 to Enabled in BIOS will let the cpu vcore drop to between 0.1v- 0.2v at idle.
    Maximus 8 Hero/6700K @ 4.8/4x4GB LPX @ 3200 15-17-17-36 CR1
    Case Labs SM8 w/dual pedestals / Custom water w/ acrylic pipe / Light box
    PowerColor 390Xw/EK block / Samsung 840 Pro 256GBx2 RAID 0 / 128GBx1 SSD's | 3 HDD's / DVD burner
    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

    Wifes: Z77X-UD5H / 3770K w/c with Raystorm copper block & 2 Rads/ Kingston HyperX RAM / Switch 810 case/ PowerColor AX7950 w/EK block
    HTPC: Z68 Pro3 M / 2105

    SOLD:Z97X-UD5H /4790K/F11b mod BIOS/4.8@1.38 4x4GB Kingston Genesis KHX24C11X3K4 2400 RAM 11-13-13-30
    SOLD:Z87X-UD5H /4770K


  6. #6
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    Default Re: Bad overclocking with a Z87X-UD3H and 4670K.

    Quote Originally Posted by quetzalin View Post
    Thanks a lot for the answers!, I didn't know about the guide you posted boondocks, found it very useful.
    I already knew every Haswell is different and some can OC better than others, sadly mine seems to be pretty bad at it.

    So far i did some tweaks and managed to get it stable at 4,1GHz. OCCT stress has been running for 10h now and still going on.
    My temperatures are at around 68-70 (with a max of 79 for one of the cores).

    These are the values at the moment:
    - CPU Base Clock: 100MHz
    - CPU Clock Ratio: 41
    - CPU Vcore: 1.275v
    - CPU VRIN Loadline Calibration: Extreme
    - CPU VRIN Current Protection: Extreme
    - PWM Phase Control: eXm Perf.
    - CPU VRIN External Override: 2.0v
    - CPU RING Voltage: 1.2v
    - Uncore ratio: Manually set to 35x
    - C1E, C3, C6/C7, Thermal Monitor and EIST are still OFF.
    - Turbo Boost still disabled too.

    I think what helped the most was setting the Uncore ratio to a manual value, i thought leaving it to Auto the bios wouldn't change it at all but i guess it did. Also increasing the Vcore a bit also helped, i guess.

    Thanks again!

    That is quite high voltage for small OC, mine is on 4.5 GHz at 1.176v same CPU Z87-HD3 MB...rest on auto, and yes, bus on 100.03 to have CPU on 4.500 not 4.499 and RAM on 1600 not 1599...MHz :)
    One thing my Vcore is set to normal and override is like +0.100v I did this to have scalable voltage otherwise it is stuck all time at voltage i set manually...
    But some CPU are worse then others :(
    Last edited by nedooo; 04-26-2014 at 11:21 PM.

  7. #7
    scracy is offline Junior Member
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    Default Re: Bad overclocking with a Z87X-UD3H and 4670K.

    Personally i would not use OCCT for stability testing Haswell way too much heat,something like AIDA 64 is better suited to Haswell and it stress tests all the instruction sets at the same time....

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