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Thread: GA-P55-UD4P won't accept BCLCK set btwn 161-170




  1. #11
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-P55-UD4P won't accept BCLCK set btwn 161-170

    Ahh ok, do you see the same if you set 171-175 for example? If so it might just be a big or something in the BIOS, nothing to worry about really.

    You can use auto, but it is going to overvolt things, that's why it's better to set yourself. Even if you use auto to find the voltages you might need that is fine, get things going and write down the voltages used then manually set them. Then once you do that I am sure you will find that you will be able to then lower the voltages, this is why I suggest against auto. Yes it can work for sure, but often uses way more voltage than you need is all.

    Try these settings for 165

    CPU Clock Ratio 20x

    Advanced Core Features [Press Enter]:

    Intel(R) Turbo Boost Tech................[Enabled]
    CPU Cores Enabled........................[All]
    CPU Enhanced Halt (C1E)..................[Enabled]
    C3/C6/C7 State Support...................[Enabled]
    CPU Thermal Monitor......................[Enabled]
    CPU EIST Function........................[Enabled]
    Bi-Directional PROCHOT...................[Enabled]

    QPI Clock Ratio..........................[Auto] << Set x36 (Or 18 if your options are 18/22/24 instead of 36/44/48)
    QPI Link Speed........................[5.76GHz]
    Uncore Clock Ratio....................[16x]
    Uncore Frequency.........................2560MHz

    >>>>> Standard Clock Control <<<<<

    Base Clock (BCLK) Control................[Enabled]
    BCLK Frequency ..........................[160]
    Extreme Memory Profile (X.M.P.)..........[Disabled]
    System Memory Multiplier (SPD)...........[10.0]
    Memory Frequency (MHz)................1600
    PCI Express Frequency (MHz)..............[100]
    C.I.A.2..................................[Disabled]

    >>>>> Advanced Clock Control <<<<<

    CPU Clock Drive..........................[ 800mV]
    PCI Express Clock Drive..................[ 900mV]
    CPU Clock Skew...........................[ 0ps]

    Advanced Memory Settings:

    Extreme Memory Profile (X.M.P.)..........[Disabled]
    System Memory Multiplier (SPD)...........[10.0] You can use 12 for 1920Mhz and then 999-24 or so for your timings since this is 2000Mhz memory, all up to you
    Memory Frequency (MHz)................1600
    Performance Enhance (SPD)............. [Standard] << Extreme may be best
    DRAM Timing Selectable (SPD)............ [Quick] Use expert and set each channel one by one
    Profile DDR Voltage ..................1.5
    Profile QPI Voltage ..................1.1
    Channel Interleaving.....................[Auto]
    Rank Interleaving........................[Auto]

    >>>>> Channel A & B

    Channel A Timing Settings [Press Enter]:
    Cas Latency Time........................[7]
    tRCD....................................[7]
    tRP.....................................[7]
    tRAS...................................[21]

    >>>>> Advanced Timing Control

    tRC....................................[Auto]
    tRRD...................................[Auto]
    tWTR...................................[Auto]
    tWR....................................[Auto]
    tWTP...................................[Auto]
    tWL....................................[Auto]
    tRFC...................................[Auto]
    tRTP...................................[Auto]
    tFAW...................................[Auto]
    Command Rate (CMD).................. 1 [1]

    >>>>> Misc Timing Control

    B2B Cas Delay..........................[Auto]
    Round Trip Latency.....................[Auto]

    Channel A Turnaround Settings [Press Enter]:
    Different DIMMs........................[Auto]
    Different DIMMs........................[Auto]
    On The Same Rank.......................[Auto]

    >>>>> Channel A Writes Followed By Writes

    Different DIMMs........................[Auto]
    Different DIMMs........................[Auto]
    On The Same Rank.......................[Auto]


    Advanced Voltage Settings:

    ******Mother Board Voltage Control ******
    Voltage Types............Normal......Current
    --------------------------------------------

    >>> CPU
    Load Line Calibration...................[Auto] Enabled, Level 1 if you have it
    CPU Vcore..................1.19375v..[Auto] 1.15-1.3 (All up to your CPU, check with Easytune what setting auto gives you, then set that first and try to lower later as you go)
    QPI/VTT Voltage..........1.100v.....[1.210v] 1.2-1.3

    >>> MCH/ICH
    PCH Core....................1.050v.....[1.120v]
    CPU PLL......................1.800v.....[Auto]

    >>> DRAM
    DRAM Voltage..............1.500v.....[1.640v] 1.66 (This is closest to 1.65V, 1.64 is often only 1.62-1.63 and yes that may be fine but I'd try to lower to that later once you are sure everything else is ok)

  2. #12
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    Default Re: GA-P55-UD4P won't accept BCLCK set btwn 161-170

    Quote Originally Posted by Lsdmeasap View Post
    Ahh ok, do you see the same if you set 171-175 for example? If so it might just be a big or something in the BIOS, nothing to worry about really.
    As I've already mentioned, the only BCLK value that exhibits this strange behavior is 170.

    Quote Originally Posted by Lsdmeasap View Post
    QPI Clock Ratio..........................[Auto] << Set x36 (Or 18 if your options are 18/22/24 instead of 36/44/48)
    My only options are Auto/x32/x36. FWIW, I set it to x36 and was unable to POST; BIOS reverted to fail-safe settings.

    Quote Originally Posted by Lsdmeasap View Post
    System Memory Multiplier (SPD)...........[10.0] You can use 12 for 1920Mhz and then 999-24 or so for your timings since this is 2000Mhz memory, all up to you
    Wish I could, but 10.0 is the maximum available option.

    Quote Originally Posted by Lsdmeasap View Post
    Performance Enhance (SPD)............. [Standard] << Extreme may be best
    I'm confused; isn't this setting overridden by my manual settings? Otherwise, what's the point of the manual settings?

    Quote Originally Posted by Lsdmeasap View Post
    DRAM Timing Selectable (SPD)............ [Quick] Use expert and set each channel one by one
    Not sure why this is necessary since both channels are identical, hence my usage of the Quick setting. Am I misunderstanding something here?

    Quote Originally Posted by Lsdmeasap View Post
    Load Line Calibration...................[Auto] Enabled, Level 1 if you have it
    No Level 1 for me.

    Quote Originally Posted by Lsdmeasap View Post
    CPU Vcore..................1.19375v..[Auto] 1.15-1.3 (All up to your CPU, check with Easytune what setting auto gives you, then set that first and try to lower later as you go)
    I don't have EasyTune installed and I don't plan on doing so just to investigate this setting. FWIW, I set it to 1.3 and was unable to POST; BIOS reverted to fail-safe settings.

    Quote Originally Posted by Lsdmeasap View Post
    QPI/VTT Voltage..........1.100v.....[1.210v] 1.2-1.3
    FWIW, I set it to 1.3 and was unable to POST; BIOS reverted to fail-safe settings.

    Quote Originally Posted by Lsdmeasap View Post
    DRAM Voltage..............1.500v.....[1.640v] 1.66 (This is closest to 1.65V, 1.64 is often only 1.62-1.63 and yes that may be fine but I'd try to lower to that later once you are sure everything else is ok)
    In my experience, the mobo consistently corrects 1.64 to 1.65. FWIW, I set it to 1.66 and was unable to POST; BIOS reverted to fail-safe settings.

    So I'm interested in hearing more of your feedback as my first attempt at the highest recommended settings failed. I'm under the impression (incorrectly, perhaps) that when the BIOS reverts to fail-safe settings, it's due to the current settings being insufficient. In other words, I should be able to configure with some extra headroom (staying within your recommended settings) and then carefully decrement until I can't POST (at which time I increment back to the last successful settings). If this approach is flawed, I welcome more information.

    Thanks again!
    CPU: Intel Core i5-750 | Mobo: Gigabyte GA-P55-UD4P (BIOS: F10) | VGA: Asus EAH5850 | PSU: Enermax Revolution85+ 850W | RAM: G.Skill Trident 8GB (2x F3-16000CL9D-4GBTD) | SSD: Intel X25-M G2 160GB | OS: Win7 x64

  3. #13
    Lsdmeasap's Avatar
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    Default Re: GA-P55-UD4P won't accept BCLCK set btwn 161-170

    Thanks, just wanted to be sure (Bout 170)

    How about 44 QPI then? 8.8GT/s is just very high and I think it will give you issues, if you think now go ahead and leave it as you had it. Are you sure though, I mean did you test the QPI Change by itself to be sure it was the cause of the failure when you tried it? Just checking

    Set both channel separately I suggested because some of the advanced settings do very per channel, none you would adjust but I just don't trust quick with a few of the settings auto chooses.

    You should install easytune really, it's the only way you will know what Auto is giving you/setting for QPI/Vtt, Vcore, ect. You can uninstall it once you are done investigating if you like

    See, I think auto is using too much voltages, over 1.3 Vcore for 160 Bclk. Of course you may need it, but maybe not and the failure was due to other incorrect settings. It would be best if you install easytune, and look in the tuner, advanced voltages one tab and see what auto gives you for everything. Then you can uninstall it and set all those, then lower testing as you go

    1.64-1.66 (Even 1.7+) is not going to cause a failure to boot or anything like that, it would have to be some other setting causing that. You can leave it set to 1.64 though no big deal.

    Ya, when the BIOS fails to boot and loads fails safe and gives you the red warning in MIT Section it's due to incorrect settings somewhere. More or less of something is needed, your thoughts on how to approach this are fine and that is how I actually go about things myself (Set very high then lower later as I test)

  4. #14
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    Default Re: GA-P55-UD4P won't accept BCLCK set btwn 161-170

    Have you tried another PCI Express Frequency, like 102 or 103.

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