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Thread: Gigabyte GA-EP45-DS4




  1. #1
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    Default Gigabyte GA-EP45-DS4

    Hi i want to overclock my e8400 but when i set the CPU Host Frequency over 350 i cant boot.
    Is there any settings i should change?
    And also when i change DRAM Timing Selectable to manual it wont boot.

    my computer:

    • Corsair Dominator TWIN2X8500C5D 4096MB,DDR2,2x2GB(KIT),DHX,E.P.P, CL5-5-5-15-2T
    • Corsair Powersupply 750W Black,ATX/EPS,140mm Fan, 8xSATA, SLI
    • Gigabyte GA-EP45-DS4, P45, Socket-775,ATX, SP, 2xGbLAN, DDR2, 2xPCI-Ex(2.0)x16
    • Intel Core™ 2 Duo E8400 3.0GHz, SocketLGA775, 6MB, 1333Mhz
    • Samsung DVD±RW burner, SH-S223F, 22x,DVDRAM 12x, Black
    • Samsung SpinPoint F1 750GB SATA232MB 7200RPM
    • Sapphire Radeon HD 4870 512MB GDDR5,PCI-Express 2.0, 2xDVI/HDMI/HDCP

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Gigabyte GA-EP45-DS4

    Have you read the guides pinned here? If not you should so you can get to know BIOS's and ram timings a little better. Yes there are many settings that need to be changed such as disabled settings, voltages, and you need to set several things for 2x2gb ram to manually set things as well.

    Would you like some settings or just some pointers? If you would like some suggested settings please let me know a CPU Speed you would like to run and I will post you a full table of settings

  3. #3
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    Default Re: Gigabyte GA-EP45-DS4

    It would be nice with some settings and i want a speed of 3.6 GHz
    Thanks that was a quick reply

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Gigabyte GA-EP45-DS4

    Ya, you caught me in here early today! Usually not around till late

    E8400 @ 3.6Ghz W/ 2x2GB ram @ 1066

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.618Ghz


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 402Mhz << Do not use 400 exact
    PCI Express Frequency (Mhz) .........:Set to 100

    C.I.A.2 .................................:[Disabled]


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<<
    MCH Clock Skew (ps)...................: <<<


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [333] << You may be able to use 400. When changing this setting and trd (Static tRead Values) ONLY make these changes at that time, no other setting changes at the same time. So MCH strap changes, reboot, trd change and reboot, then the rest can all be done at once.

    System Memory Multiplier ..............: 2.66 (if you do not see 2.66, you will need to change the above to one that you do see it with, they are connected)

    Memory Frequency (Mhz) ..............: 1064Mhz
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................15/18

    Use highest first below, then later tweak one at a time testing with memtest between each move

    Advanced Timing Control
    tRRD...........................................3-5
    tWTR.......................................... (3-6) 8-12
    tWR............................................(4-6) 8-14
    tRFC...........................................52-62
    tRTP...........................................4-6
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value.........................:7-10
    tRD Phase0 Adjustment...................:<<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
    tRD Phase2 Adjustment .................:Auto
    tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto
    Twr2wr(Different Rank)...................:Auto
    Twr2rd(Different Rank)...................:Auto
    Trd2wr(Same/Diff Rank)..................:Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:7-10
    tRD Phase0 Adjustment...................:<<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
    tRD Phase2 Adjustment .................:Auto
    tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto
    Twr2wr(Different Rank)...................:Auto
    Twr2rd(Different Rank)...................:Auto
    Trd2wr(Same/Diff Rank)..................:Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................: <<< you will have to test until you find out. 1.35 is a good starting point, you may need more or less as your board has a large vdroop so what you set it far less then what you get. Just set high and lower later. If it dont boot then you may need more
    CPU Termination…..... 1.200V*.......: <<< 1.32-1.34
    CPU PLL…………………....1.500V*.......: <<< 1.5-1.6
    CPU Referen.…………....0.755V*.......: <<< .61% Of Vtt (Termination above)
    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above)

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.2-1.25
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave

    DRAM
    DRAM Voltage ……....1.800V............: 2.00-2.1 << Set to amount on sticker of you ram

    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave

    Advanced Settings
    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Disabled]
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Disabled]

  5. #5
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    Default Re: Gigabyte GA-EP45-DS4

    also i got another question. What program should i use to see my temps? cause real temp shows 10 degres c lower temps then everest.

  6. #6
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    Default Re: Gigabyte GA-EP45-DS4

    Nice thanks i will try these now :P

  7. #7
    Lsdmeasap's Avatar
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    Default Re: Gigabyte GA-EP45-DS4

    RealTemp should be correct, both have changeable tjmax, which is why you see different temps. You do have to have the latest Everest to change it, but you will find it in there in preferences, hardware montioring (It is not there in older versions) Tjmax for 45Nm cpu's has not been released yet but most agree it is 95 or 100 >>>
    [OCCP] TJMax for All - Overclock.net - Overclocking.net

    You must also Calibrate Realtemp >>>
    Real Temp - Documentation

  8. #8
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    Default Re: Gigabyte GA-EP45-DS4

    when i change the timming to manual the computer wont boot.

  9. #9
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    Default Re: Gigabyte GA-EP45-DS4

    What could be wrong?

  10. #10
    Lsdmeasap's Avatar
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    Default Re: Gigabyte GA-EP45-DS4

    You must set the voltages, MCH and ram and CPU. The reboot and start on the rest.

    If you are still having issues please post back exactly what you set that fails and I will advise you

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