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Thread: Z97X-UD5H first build - some BIOS questions




  1. #1
    Mr Blobby is offline Junior Member
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    Default Z97X-UD5H first build - some BIOS questions

    Welcome to Idiot Corner!


    The board arrived with F6 BIOS. I hadn't changed any settings but initially CPU Vcore was 1.441V. Which i believe is high? After flashing to F8 it's now 1.248V. (CPU Frequency is 4,390MHz.)


    Is this OK? Or should I manually lower Vcore? ...Or change anything else for that matter? (no idea about this atm - when I understand this stuff better I'll look at OC'ing but now just want to see it working)


    The Indicated CPU temp differs between 'ST mode' and 'classic' - 39C in Classic, whereas it's 33C in ST mode. CPU fan speeds don't agree either - 840rpm(ST) and 930rpm (classic). Is this a known bug? Are either telling the truth? Fan speeds do respond to manual settings FWIW.




    Erm, I'm going to install Win8.1 OEM onto an SSD, and use a 3TB HDD for storage. What are the recommended settings for the following, please?:

    Boot Mode Selection? "UEFI and Legacy"?
    Storage Boot Option Control "UEFI first"?
    Other PCI Device ROM Priority "UEFI OpROM"?

  2. #2
    boondocks's Avatar
    boondocks is offline Senior Member
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    Default Re: Z97X-UD5H first build - some BIOS questions

    Quote Originally Posted by Mr Blobby View Post
    Welcome to Idiot Corner!


    The board arrived with F6 BIOS. I hadn't changed any settings but initially CPU Vcore was 1.441V. Which i believe is high? After flashing to F8 it's now 1.248V. (CPU Frequency is 4,390MHz.)


    Is this OK? Or should I manually lower Vcore? ...Or change anything else for that matter? (no idea about this atm - when I understand this stuff better I'll look at OC'ing but now just want to see it working)


    The Indicated CPU temp differs between 'ST mode' and 'classic' - 39C in Classic, whereas it's 33C in ST mode. CPU fan speeds don't agree either - 840rpm(ST) and 930rpm (classic). Is this a known bug? Are either telling the truth? Fan speeds do respond to manual settings FWIW.




    Erm, I'm going to install Win8.1 OEM onto an SSD, and use a 3TB HDD for storage. What are the recommended settings for the following, please?:

    Boot Mode Selection? "UEFI and Legacy"?
    Storage Boot Option Control "UEFI first"?
    Other PCI Device ROM Priority "UEFI OpROM"?
    1.248 vcore is OK, although for stock settings I'm sure you could lower it. Manually setting vcore is absolutely fine for 8/9 series boards and you can experiment with lower vcore settings. There exist tutorials for overclocking Gigabyte Z97 boards you may find helpful with listings for max voltages.

    I don't use Win 8 but I would assume default settings are OK in BIOS for installation. Perhaps someone else can chime in on this.
    Maximus 8 Hero/6700K @ 4.8/4x4GB LPX @ 3200 15-17-17-36 CR1
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  3. #3
    Mr Blobby is offline Junior Member
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    Default Re: Z97X-UD5H first build - some BIOS questions

    Thanks.

    Yeah, it's the recognizing more than 2TB thing that I'm thinking about.
    Last edited by Mr Blobby; 11-19-2014 at 05:18 AM. Reason: I meant TB not GB
    GA-Z97X-UD5H rev1.0, i7-4790K
    Noctua NH-D15
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    boondocks's Avatar
    boondocks is offline Senior Member
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    Default Re: Z97X-UD5H first build - some BIOS questions

    AFAIK default boot settings should be OK.
    Here again, I don't use any >2 tb drives but defaults should be OK as a quick look in the manual doesn't show anything.
    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


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    Default Re: Z97X-UD5H first build - some BIOS questions

    From my queries with Gigabyte support on z97 boards, most of the 'over-volting' issues with Haswell cpus have been addressed with subsequent bios releases after initial release. As with any issue, you can always apply some caution on your own and adjust the vcore to suit your needs. I was happy with the vcore on the z97x-ud5 with a 4690k. Even optimized settings were indeed not an issue, was much better than on my z87-ud4h board with the same cpu. That I guess should be expected since the Haswell refresh was intended for the z97x.

    I agree the 1.248 vcore is alright. I assume you have turbo enabled in the bios as well for the Cpu. It can definitely go lower. But, certainly read up voltages and temps if you want to start overclocking, it is sound advice( helpful to me). Overclocking had to be more refined in my experience with the z97x boards where as I could just start pushing in a sense with the older z87 boards.

    As for windows 8, 8.1, never had any install issues with it. Windows 8(64bit) has no issues with 2tb plus drives especially formatted as GPT and not MBR drives. And you are installing the Os on the smaller SSD, so you should be covered by both win 7/win8 . The 3tb as a storage drive can only be fully utilised as a 3tb drive in win 7 if it is GPT formatted. Much the same with windows 8, it saves headaches down the road. Now.... if you were installing the Windows 8 on the 3tb, then you have to go the recommended route of using UEFI (not legacy) and GPT only since you are using it as 'a boot drive' instead of storage. Yes it does get picky in that situation.

    I haven't come across the issue with different bios readings in smart tweak mode and classic mode. It seems rather odd if that is the case. You could install CPUID Hardware Monitor tool in Win 8 and compare the temp readings with the bios to see which one reports accurately. I'll will check on my boards to see if it is indeed so, maybe I haven't been too observant.
    Last edited by TicTacToe; 11-22-2014 at 03:52 AM.
    i5 4670k - z87x-ud4h (soho)
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    Builds - Z97x-Gaming 7(media center) z97x- Soc(test bench@4790k, 32gb gskill)
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  6. #6
    Mr Blobby is offline Junior Member
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    Default Re: Z97X-UD5H first build - some BIOS questions

    Thanks gents.

    FWIW, I just set it to 44x100MHz, Vcore = 1.2v, and gave it an hour of OTTC. The core temps where averaging around 65c with peaking around 70c with the occasional spike at 73. It didn't blow up so I'm happy for the time being and getting on with some games.:)
    GA-Z97X-UD5H rev1.0, i7-4790K
    Noctua NH-D15
    HyperX fury 2x8GB 1866MHz
    Crucial MX100 512GB SSD, WD Black 3TB HDD
    MSI GTX980, Cooler Master V850
    Fractal ARC XL
    Sound Blaster Z
    Samsung 24x SATA DVD writer

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