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Thread: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock




  1. #441
    lukevega is offline Member
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    Exclamation Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    Hopefully we're getting closer but for now another fail:

    Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock-1-24-mch-core-fail-jpg

    I have accidentally cut the bottom off the image but otherwise I think it's ok...

    Code:
    ***************************************
    ***************************************
    Gigabyte GA-EP45-UD3P (Rev. 1.0) - F11d
    ***************************************
    ***************************************
    ******************************
    MB Intelligent Tweaker(M.I.T.)
    ******************************
    Robust Graphics Booster ..............: [Auto]
    CPU Clock Ratio ......................: [9X]
    x Fine CPU Clock Ratio................: [+0.5]
    CPU Frequency ........................: 3.80GHz( 400x9.5)
    ********** Clock Chip Control ********
    >>>>>  Standard Clock Control
    CPU Host Clock Control................: [Enabled]
    x CPU Host Frequency(Mhz).............: [400]
    PCI Express Frequency(Mhz)............: [100]
    C.I.A.2...............................: [Disabled]
    >>>>> Advanced Clock Control..........: [Press Enter]
    CPU Clock Drive.......................: [800mV]
    PCI Express Clock Drive...............: [900mV]
    CPU Clock Skew........................: [  0ps]
    MCH Clock Skew........................: [  0ps]
    ******** DRAM Performance Control ********
    Performance Enhance...................: [Turbo]
    (G)MCH Frequency Latch................: [Auto]
    System Memory Multiplier (SPD)........: [Auto]
    Memory Frequency(Mhz).....800.........: 960
    DRAM Timing Selectable (SPD)..........: [Manual]
    >>>>> Standard Timing Control
    x CAS Latency Time................5...: [Auto]
    x tRCD ...........................5...: [Auto]
    x tRP.............................5...: [Auto]
    x tRAS...........................18...: [Auto]
    >>>>> Advanced Timing Control.........: [Press Enter]
    x tRRD............................3...: [Auto]
    x tWTR............................3...: [Auto]
    x tWR.............................6...: [Auto]
    x tRFC...........................52...: [Auto]
    x tRTP............................3...: [Auto]
    x Command Rate (CMD) .............0...: [Auto]
    >>>>> Channel A Timing Settings.......: [Press Enter]
    x Static tRead Value.............8...: [9]
    x tRD Phase0 Adjustment...........0...: Auto
    x tRD Phase1 Adjustment...........0...: Auto
    x tRD Phase2 Adjustment ..........0...: Auto
    x tRD Phase3 Adjustment...........0...: Auto
    x Trd2rd(Different Rank)..........6...: Auto
    x Twr2wr(Different Rank)..........6...: Auto
    x Twr2rd(Different Rank)..........5...: Auto
    x Trd2wr(Same/Diff Rank)..........8...: Auto
    x DIMM1 Clock Skew Control (ps).......: Auto
    x DIMM2 Clock Skew Control (ps).......: Auto
    x DDR Write Training..................: Auto
    >>>>> Channel A Driving Settings......: [Press Enter]
    x Driving Strength Profile............: [Auto]
    x Data Driving Pull-Up Level..........: Auto
    x Cmd Driving Pull-Up level...........: Auto
    x Ctrl Driving Pull-Up Level..........: Auto
    x Clk Driving Pull-Up Level...........: Auto
    x Data Driving Pull-Down Level........: Auto
    x Cmd Driving Pull-Down level.........: Auto
    x Ctrl Driving Pull-Down Level........: Auto
    x Clk Driving Pull-Down Level.........: Auto
    >>>>> Channel B Timing Settings.......: [Press Enter]
    x Static tRead Value.............8...: [9]
    x tRD Phase0 Adjustment...........0...: Auto
    x tRD Phase1 Adjustment...........0...: Auto
    x tRD Phase2 Adjustment ..........0...: Auto
    x tRD Phase3 Adjustment...........0...: Auto
    x Trd2rd(Different Rank)..........6...: Auto
    x Twr2wr(Different Rank)..........6...: Auto
    x Twr2rd(Different Rank)..........5...: Auto
    x Trd2wr(Same/Diff Rank)..........8...: Auto
    x DIMM1 Clock Skew Control (ps).......: Auto
    x DIMM2 Clock Skew Control (ps).......: Auto
    x DDR Write Training..................: Auto
    >>>>> Channel B Driving Settings......: [Press Enter]
    x Driving Strength Profile............: [Auto]
    x Data Driving Pull-Up Level..........: Auto
    x Cmd Driving Pull-Up level...........: Auto
    x Ctrl Driving Pull-Up Level..........: Auto
    x Clk Driving Pull-Up Level...........: Auto
    x Data Driving Pull-Down Level........: Auto
    x Cmd Driving Pull-Down level.........: Auto
    x Ctrl Driving Pull-Down Level........: Auto
    x Clk Driving Pull-Down Level.........: Auto
    ****** Motherboard Voltage Control ******
    Voltage Types..........Normal...........Current
    -----------------------------------------------
    >>> CPU
    Load-Line Calibration.................: [Disabled]
    CPU Vcore..............1.23750V.......: [1.38125V]
    CPU Termination........1.200V.........: [1.320V]
    CPU PLL................1.500V.........: [1.59V]
    CPU Reference..........0.760V.........: [Auto]
    >>> MCH/ICH
    MCH Core...............1.100V.........: [1.24V]
    MCH Reference..........0.760V.........: [Auto]
    MCH/DRAM Reference.....0.900V.........: [Auto]
    ICH I/O................1.500V.........: [Auto]
    ICH Core...............1.100V.........: [Auto]
    >>> DRAM
    DRAM Voltage...........1.800V.........: [2.100V]
    DRAM Termination.......0.900V.........: [Auto]
    Channel A Reference....0.900V.........: [Auto]
    Channel B Reference....0.900V.........: [Auto]
    ******** Advanced BIOS Features ********
    Hard Disk Boot Priority...............: [Press Enter]
    Quick Boot............................: [Disabled]
    First Boot Device.....................: [USB-HDD]
    Second Boot Device....................: [Hard Disk]
    Third Boot Device.....................: [Disabled]
    Boot Up Floppy Seek...................: [Disabled]
    Boot Up Num-Lock......................: [Off]
    Password Check........................: [Setup]
    HDD S.M.A.R.T. Capability.............: [Disabled]
    Limit CPUID Max. to 3.................: [Disabled]
    No-Execute Memory Protect.............: [Enabled]
    CPU Enhanced Halt (C1E)...............: [Disabled]
    C2/C2E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.....................: [Disabled]
    Virtualization Technology.............: [Disabled]
    Delay For HDD (Secs)..................: [ 0]
    Full Screen LOGO Show.................: [Disabled]
    Bachup BIOS Image to HDD..............: [Disabled]
    Init Display First....................: [PEG]
    ******** Integrated Peripherals ********
    ICH SATA Control Mode.................: [AHCI]
    SATA Port0-3 Native Mode..............: [Enabled]
    Azalia Codec..........................: [Auto]
    Onboard H/W 1394......................: [Enabled]
    Onboard H/W Lan1......................: [Enabled]
    Onboard H/W Lan2......................: [Enabled]
    Green LAN.............................: [Disabled]
    Smart LAN1............................: [Press Enter]
    Smart LAN2............................: [Press Enter]
    Onboard LAN1 BOOT ROM.................: [Disabled]
    Onboard LAN2 BOOT ROM.................: [Disabled]
    Onboard SATA/IDE Device...............: [Enabled]
    Onboard SATA/IDE Ctrl Mode............: [AHCI]
    Onboard Serial Port 1.................: [3F8/IRQ4]
    Onboard Parallel Port.................: [378/IRQ7]
    Parallel Port Mode....................: [SPP]
    xECP Mode Use DMA.....................:  3
    USB Controllers.......................: [Enabled]
    USB Keyboard Function.................: [Disabled]
    USB Mouse Function....................: [Disabled]
    USB Storage Function..................: [Enabled]
    ******** Power Management Setup ********
    ACPI Suspend Type.....................: [S3(STR)]
    USB Device Wake-Up From S3............: [Enabled]
    Soft-Off by PWR-BTTN..................: [Instant-Off]
    PME Event Wake Up.....................: [Enabled]
    Power On by Ring......................: [Disabled]
    Resume by Alarm.......................: [Disabled]
    HPET Support..........................: [Enabled]
    HPET Mode.............................: [64-bit mode]
    Power On By Mouse.....................: [Double Click]
    Power On By Keyboard..................: [Disabled]
    AC Back Function......................: [Soft-Off]
    ******** PnP/PCI Configurations ********
    Resources Controlled By...............: [Auto]
    PCI Latency Timer (CLK)...............: [32]
    PC1 IRQ Assignment....................: [Auto]
    PC2 IRQ Assignment....................: [Auto]
    *********** PC Health status ***********
    Reset Case Open Status................: [Disabled]
    CPU Warning Temperature...............: [80C/176F]
    CPU FAN Fail Warning..................: [Disabled]
    SYSTEM FAN2 Fail Warning..............: [Disabled]
    POWER FAN Fail Warning................: [Disabled]
    SYSTEM FAN1 Fail Warning..............: [Disabled]
    CPU Smart FAN Control.................: [Disabled]
    I'm going to try increasing VTT up one notch to 1.32, should I lower MCH Core back down to 1.22?

    I'm trying to change as little as possible between tests but can try setting tRFC to 60 as well if you think it would help? Also, if you give the word I will enable EIST and C1E.
    GA-EP45-UD3P 1.0, Intel Xeon X5470, 4x2GB Kingston HyperX DDR2 1066, NVidia Geforce 8800GTS 512, Kingston V300 240GB, Noctua NH-U12P with 2x Noctua NF-P12 Push-Pull, Corsair HX520W, Antec P182, Windows 7 64-bit

  2. #442
    lukevega is offline Member
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    Increased CPU Termination by one notch to 1.340V and kept everything else the same:

    Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock-1-340vtt-jpg

    I waited 15 mins after booting... Fingers crossed!
    GA-EP45-UD3P 1.0, Intel Xeon X5470, 4x2GB Kingston HyperX DDR2 1066, NVidia Geforce 8800GTS 512, Kingston V300 240GB, Noctua NH-U12P with 2x Noctua NF-P12 Push-Pull, Corsair HX520W, Antec P182, Windows 7 64-bit

  3. #443
    lukevega is offline Member
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    Thumbs up Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    Finally some good news to report!

    The system passed 9 hours of prime95 blend (unfortunately I messed up the screenshot at 2am) and a further 8 hours of Large FTTs overnight! :D

    Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock-1-340vtt-ftt-pass-jpg

    (TjMax = 85C)

    (Again, sorry about the quality, here is a better image: View image: 1 340 VTT Large FTT Pass)

    I'm going to give the system a 20 minute rest then try small FTTs. Fingers crossed again!

    P.S. I had the crazy idea of trying my USB 3.0 PCIe card in the x8 second graphics card slot - I have no idea if this will make a difference but seeing as I'm not using it thought I might give it a go. Do you think it will make any difference Jim?
    GA-EP45-UD3P 1.0, Intel Xeon X5470, 4x2GB Kingston HyperX DDR2 1066, NVidia Geforce 8800GTS 512, Kingston V300 240GB, Noctua NH-U12P with 2x Noctua NF-P12 Push-Pull, Corsair HX520W, Antec P182, Windows 7 64-bit

  4. #444
    SmOgER is offline Junior Member
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    Finally got it almost fully stable at 4.2Ghz. This took ages, DDR3 memory controller just didn't want to make anything near 450FSB, it didn't even POST on auto timings or auto ratio (1:1).

    It (RAM) may still need some small tweaks, but I'am pretty sure it won't cause the problems in the meantime.

    CPU itself is fully stable.

    prime95 large to low fft (blend for ~40min, RAM & CPU quick test)



    CPU-Z validation: http://valid.canardpc.com/cache/screenshot/2j5ntw.png

  5. #445
    lukevega is offline Member
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    Wink Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    Success! :D



    Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock-3-8ghz-success-jpg

    (TjMax = 85C)

    BIOS Settings:

    Code:
    ***************************************
    ***************************************
    Gigabyte GA-EP45-UD3P (Rev. 1.0) - F11d
    ***************************************
    ***************************************
    ******************************
    MB Intelligent Tweaker(M.I.T.)
    ******************************
    Robust Graphics Booster ..............: [Auto]
    CPU Clock Ratio ......................: [9X]
    x Fine CPU Clock Ratio................: [+0.5]
    CPU Frequency ........................: 3.80GHz( 400x9.5)
    ********** Clock Chip Control ********
    >>>>>  Standard Clock Control
    CPU Host Clock Control................: [Enabled]
    x CPU Host Frequency(Mhz).............: [400]
    PCI Express Frequency(Mhz)............: [100]
    C.I.A.2...............................: [Disabled]
    >>>>> Advanced Clock Control..........: [Press Enter]
    CPU Clock Drive.......................: [800mV]
    PCI Express Clock Drive...............: [900mV]
    CPU Clock Skew........................: [  0ps]
    MCH Clock Skew........................: [  0ps]
    ******** DRAM Performance Control ********
    Performance Enhance...................: [Turbo]
    (G)MCH Frequency Latch................: [Auto]
    System Memory Multiplier (SPD)........: [Auto]
    Memory Frequency(Mhz).....800.........: 960
    DRAM Timing Selectable (SPD)..........: [Manual]
    >>>>> Standard Timing Control
    x CAS Latency Time................5...: [Auto]
    x tRCD ...........................5...: [Auto]
    x tRP.............................5...: [Auto]
    x tRAS...........................18...: [Auto]
    >>>>> Advanced Timing Control.........: [Press Enter]
    x tRRD............................3...: [Auto]
    x tWTR............................3...: [Auto]
    x tWR.............................6...: [Auto]
    x tRFC...........................52...: [Auto]
    x tRTP............................3...: [Auto]
    x Command Rate (CMD) .............0...: [Auto]
    >>>>> Channel A Timing Settings.......: [Press Enter]
    x Static tRead Value.............8...: [9]
    x tRD Phase0 Adjustment...........0...: Auto
    x tRD Phase1 Adjustment...........0...: Auto
    x tRD Phase2 Adjustment ..........0...: Auto
    x tRD Phase3 Adjustment...........0...: Auto
    x Trd2rd(Different Rank)..........6...: Auto
    x Twr2wr(Different Rank)..........6...: Auto
    x Twr2rd(Different Rank)..........5...: Auto
    x Trd2wr(Same/Diff Rank)..........8...: Auto
    x DIMM1 Clock Skew Control (ps).......: Auto
    x DIMM2 Clock Skew Control (ps).......: Auto
    x DDR Write Training..................: Auto
    >>>>> Channel A Driving Settings......: [Press Enter]
    x Driving Strength Profile............: [Auto]
    x Data Driving Pull-Up Level..........: Auto
    x Cmd Driving Pull-Up level...........: Auto
    x Ctrl Driving Pull-Up Level..........: Auto
    x Clk Driving Pull-Up Level...........: Auto
    x Data Driving Pull-Down Level........: Auto
    x Cmd Driving Pull-Down level.........: Auto
    x Ctrl Driving Pull-Down Level........: Auto
    x Clk Driving Pull-Down Level.........: Auto
    >>>>> Channel B Timing Settings.......: [Press Enter]
    x Static tRead Value.............8...: [9]
    x tRD Phase0 Adjustment...........0...: Auto
    x tRD Phase1 Adjustment...........0...: Auto
    x tRD Phase2 Adjustment ..........0...: Auto
    x tRD Phase3 Adjustment...........0...: Auto
    x Trd2rd(Different Rank)..........6...: Auto
    x Twr2wr(Different Rank)..........6...: Auto
    x Twr2rd(Different Rank)..........5...: Auto
    x Trd2wr(Same/Diff Rank)..........8...: Auto
    x DIMM1 Clock Skew Control (ps).......: Auto
    x DIMM2 Clock Skew Control (ps).......: Auto
    x DDR Write Training..................: Auto
    >>>>> Channel B Driving Settings......: [Press Enter]
    x Driving Strength Profile............: [Auto]
    x Data Driving Pull-Up Level..........: Auto
    x Cmd Driving Pull-Up level...........: Auto
    x Ctrl Driving Pull-Up Level..........: Auto
    x Clk Driving Pull-Up Level...........: Auto
    x Data Driving Pull-Down Level........: Auto
    x Cmd Driving Pull-Down level.........: Auto
    x Ctrl Driving Pull-Down Level........: Auto
    x Clk Driving Pull-Down Level.........: Auto
    ****** Motherboard Voltage Control ******
    Voltage Types..........Normal...........Current
    -----------------------------------------------
    >>> CPU
    Load-Line Calibration.................: [Disabled]
    CPU Vcore..............1.23750V.......: [1.38125V]
    CPU Termination........1.200V.........: [1.340V]
    CPU PLL................1.500V.........: [1.59V]
    CPU Reference..........0.760V.........: [Auto]
    >>> MCH/ICH
    MCH Core...............1.100V.........: [1.24V]
    MCH Reference..........0.760V.........: [Auto]
    MCH/DRAM Reference.....0.900V.........: [Auto]
    ICH I/O................1.500V.........: [Auto]
    ICH Core...............1.100V.........: [Auto]
    >>> DRAM
    DRAM Voltage...........1.800V.........: [2.100V]
    DRAM Termination.......0.900V.........: [Auto]
    Channel A Reference....0.900V.........: [Auto]
    Channel B Reference....0.900V.........: [Auto]
    ******** Advanced BIOS Features ********
    Hard Disk Boot Priority...............: [Press Enter]
    Quick Boot............................: [Disabled]
    First Boot Device.....................: [USB-HDD]
    Second Boot Device....................: [Hard Disk]
    Third Boot Device.....................: [Disabled]
    Boot Up Floppy Seek...................: [Disabled]
    Boot Up Num-Lock......................: [Off]
    Password Check........................: [Setup]
    HDD S.M.A.R.T. Capability.............: [Disabled]
    Limit CPUID Max. to 3.................: [Disabled]
    No-Execute Memory Protect.............: [Enabled]
    CPU Enhanced Halt (C1E)...............: [Disabled]
    C2/C2E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.....................: [Disabled]
    Virtualization Technology.............: [Disabled]
    Delay For HDD (Secs)..................: [ 0]
    Full Screen LOGO Show.................: [Disabled]
    Bachup BIOS Image to HDD..............: [Disabled]
    Init Display First....................: [PEG]
    ******** Integrated Peripherals ********
    ICH SATA Control Mode.................: [AHCI]
    SATA Port0-3 Native Mode..............: [Enabled]
    Azalia Codec..........................: [Auto]
    Onboard H/W 1394......................: [Enabled]
    Onboard H/W Lan1......................: [Enabled]
    Onboard H/W Lan2......................: [Enabled]
    Green LAN.............................: [Disabled]
    Smart LAN1............................: [Press Enter]
    Smart LAN2............................: [Press Enter]
    Onboard LAN1 BOOT ROM.................: [Disabled]
    Onboard LAN2 BOOT ROM.................: [Disabled]
    Onboard SATA/IDE Device...............: [Enabled]
    Onboard SATA/IDE Ctrl Mode............: [AHCI]
    Onboard Serial Port 1.................: [3F8/IRQ4]
    Onboard Parallel Port.................: [378/IRQ7]
    Parallel Port Mode....................: [SPP]
    xECP Mode Use DMA.....................:  3
    USB Controllers.......................: [Enabled]
    USB Keyboard Function.................: [Disabled]
    USB Mouse Function....................: [Disabled]
    USB Storage Function..................: [Enabled]
    ******** Power Management Setup ********
    ACPI Suspend Type.....................: [S3(STR)]
    USB Device Wake-Up From S3............: [Enabled]
    Soft-Off by PWR-BTTN..................: [Instant-Off]
    PME Event Wake Up.....................: [Enabled]
    Power On by Ring......................: [Disabled]
    Resume by Alarm.......................: [Disabled]
    HPET Support..........................: [Enabled]
    HPET Mode.............................: [64-bit mode]
    Power On By Mouse.....................: [Double Click]
    Power On By Keyboard..................: [Disabled]
    AC Back Function......................: [Soft-Off]
    ******** PnP/PCI Configurations ********
    Resources Controlled By...............: [Auto]
    PCI Latency Timer (CLK)...............: [32]
    PC1 IRQ Assignment....................: [Auto]
    PC2 IRQ Assignment....................: [Auto]
    *********** PC Health status ***********
    Reset Case Open Status................: [Disabled]
    CPU Warning Temperature...............: [80C/176F]
    CPU FAN Fail Warning..................: [Disabled]
    SYSTEM FAN2 Fail Warning..............: [Disabled]
    POWER FAN Fail Warning................: [Disabled]
    SYSTEM FAN1 Fail Warning..............: [Disabled]
    CPU Smart FAN Control.................: [Disabled]
    Now to try for 4.0!

    What settings do you think will require tweaking first Jim?
    Last edited by lukevega; 08-15-2014 at 03:47 AM. Reason: Added more information for the readers
    GA-EP45-UD3P 1.0, Intel Xeon X5470, 4x2GB Kingston HyperX DDR2 1066, NVidia Geforce 8800GTS 512, Kingston V300 240GB, Noctua NH-U12P with 2x Noctua NF-P12 Push-Pull, Corsair HX520W, Antec P182, Windows 7 64-bit

  6. #446
    lukevega is offline Member
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    I've been re-reading all of your guidance to see how to approach 4.0GHz and in post#392 you said that one article achieved success with MCH Reference : VTT = 0.7 (70%). I currently have VTT set to 1.340V so 80% of this would make MCH Reference = 0.840V - Would that be correct and should I try that for 4.0GHz? I'd like to try and keep the DRAM Performance Enhance at 'Turbo' if possible but as always will take your advice!
    GA-EP45-UD3P 1.0, Intel Xeon X5470, 4x2GB Kingston HyperX DDR2 1066, NVidia Geforce 8800GTS 512, Kingston V300 240GB, Noctua NH-U12P with 2x Noctua NF-P12 Push-Pull, Corsair HX520W, Antec P182, Windows 7 64-bit

  7. #447
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    usb 3.0 add-in card in the second x16 physical slot
    When the second pci-e x16 physical slot is filled, the maximum pci-e bandwidth is changed to x8 (electrical) for both x16 physical pci-e slots.
    Theoretically this drops the maximum pci-e bandwidth in half, from x16 maximum to x8 maximum, but this should have no performance penalty for you video card. Installing any x1 card in this slot should have no added benefit for the card, because the card's electrical contacts can't access the slot's electrical contacts for more pci-e lanes. I will be very surprised if your usb 3.0 performance is better in the x16 slot than when it is in an x1 pci-e slot. Keep in mind that your EP45-UD3P has twice the pci-e bandwidth compared with P35 motherboards.

    Performance Enhance Turbo setting in the bios
    It won't hurt to try to continue using the Turbo setting when trying for a 4.00GHz overclock.
    If you need to change this setting to Standard, you can still manually set most of bios settings to obtain similar results.

    4.00GHz bios settings

    9.5 x 422MHz will give you 4.009GHz and your new memory speed will probably be 1013MHz.
    Cpu Vcore will probably need to be set to 1.40000 or 1.40625 volts, or possibly higher.
    VTT might need to be increased and if needed, up to 1.36 will be OK.
    It appears that VTT up to 1.40 is safe when using even higher Cpu Core voltages.
    MCH Core might need a small increase; with my EP45-UD3P, if MCH Core is too high, my system won't boot.
    Dram Voltage might need a small increase.

    Tweaking with MCH Reference settings
    The stock VTT setting is 1.20 volts and the stock MCH Reference setting is 0.760 volts.
    0.760v divided by 1.20 is 0.6333 or 63% of VTT

    When MCH Reference is left at the 0.760 (AUTO) setting, when you increase VTT, the MCH Reference setting visually remains at 0.760v (63%) and you don't see any changes in the bios.
    With your current 1.34 VTT setting, the actual value for MCH Reference is still 63% of VTT even the the bios still shows 0.760 volts.
    1.34v x 63.333% = 0.8486v

    With high overclocks, usually using about 475MHz FSB or higher, some quad core processors respond favorably when the 63% ratio is raised slightly, sometimes up to about 70%.
    The correct procedure is simple:
    1. set VTT back to 1.20v (the stock setting)
    2. set MCH Reference up one click
    3. reset VTT back to the desired setting
    4. repeat all of your stress tests

    Each system will respond differently when tweaking MCH Reference voltage.
    It appears that tweaking CPU Reference is not helpful.

    I cheated one time and went from 63% to 70% in one step and my system barfed.

    Some have claimed that tweaking CPU Clock Skew and/or MCH Clock Skew settings has helped but there is little information or recommendations.
    I have seen some "stable" setups where these settings varied from 50ps to 350ps and in a couple of cases, they used negative values.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  8. #448
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    FYI, general clock skew thread for newer systems: Overview of Clock Skew from the rog.asus.com forum

    A web search using: MCH reference volt setting might provide some helpful information.
    Last edited by profJim; 08-15-2014 at 08:21 AM.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  9. #449
    lukevega is offline Member
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    Thanks again for the help Jim!

    I tried the x8 PCIe slot and like you said, there was no difference.

    I will try using your recommended settings and report back. What vcore would you consider to be the safe limit for my X5460?

    Also, in post #431 I mentioned that I couldn't see a 'verify' option in Macrium Reflect and was not sure which 'file size' option to choose - I'm guessing there are fewer options because I'm using the free version?
    GA-EP45-UD3P 1.0, Intel Xeon X5470, 4x2GB Kingston HyperX DDR2 1066, NVidia Geforce 8800GTS 512, Kingston V300 240GB, Noctua NH-U12P with 2x Noctua NF-P12 Push-Pull, Corsair HX520W, Antec P182, Windows 7 64-bit

  10. #450
    profJim's Avatar
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    Default Re: Socket 771 Mod Xeon X5460 GA-P35-DS3L Overclock

    You're welcome.

    I haven't forgotten about your question about the Macrium Reflect verify option.
    I recently updated to the latest Reflect version and the window doesn't appear when I run Reflect from windows.
    This might be because all of my Reflect backups are on my external drive.
    I always use my Reflect winpe optical disk when backing up or restoring.

    In any event, create a backup and then run Reflect and see if there is a verify option that will check any backup that you have already created.


    I assume that up to 1.45 volts is probably safe for your Xeon 5460.
    Last edited by profJim; 08-15-2014 at 08:33 AM.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


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