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Thread: EP45-UD3L having truble at 4.0 GHz




  1. #11
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    Default Re: EP45-UD3L having truble at 4.0 GHz

    Well I tried those setting and I could not get it prime stable. I lowered the fSB to 448 with 8.5 multiplier and it was prime 95 stable blend. Then to check to see if it's my board causing the problem I set the multiplier to 8 and the FSB 471 at all the same settings and prime failed so I know it's the board that is the problem.

  2. #12
    Chike is offline Senior Member
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    Default Re: EP45-UD3L having truble at 4.0 GHz

    It's a bit naive to think that just changing the FSB with lower multiplier is enough, but without the settings and your setup components there's not much to be said.
    You are OCing a quad on an "L" board, that might be a problem.

  3. #13
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    Default Re: EP45-UD3L having truble at 4.0 GHz

    Quote Originally Posted by Chike View Post
    It's a bit naive to think that just changing the FSB with lower multiplier is enough, but without the settings and your setup components there's not much to be said.
    You are OCing a quad on an "L" board, that might be a problem.
    I changed the fsb higher with a lower multiplier 3.8 GHz and it failed, I tried lower fsb with the highest multiplier at 3.8 GHz and it passed 24 hour prime 95 stable. Its not the VRM on the "L" board, it's the p 45 chipset. If I had a X48 chipset things would be different.

    Here are the setting I used that failed, i used the same settings that passed 3.8 Ghz just lowered the multiplier



    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Fast
    CPU Clock Ratio ..........................: 8
    Fine CPU Clock Ratio.....................:..0
    CPU Frequency ...........................: 3.768mhz


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: Mhz 471
    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...............: [Auto] Disabled
    Syem Memory Multiplier ..............:2.00D
    Msemory Frequency (Mhz) ..............: 942 MHz[/B]
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................18
    Advanced Timing Control
    tRRD...........................................5
    tWTR..........................................6
    tWR............................................6
    tRFC...........................................74
    tRTP...........................................5
    Command Rate (CMD) ....................:2

    Driving Strength Profiles
    Driving Strength ............................ 1066 (Set both channels)

    Channel A
    Static tRead Value.........................:9
    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.........................:9
    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….……….........................: 1.425
    CPU Termination…..... 1.200V*.......: 1.4v << 1.32-1.36
    CPU PLL…………………....1.500V*.......: 1.6v

    CPU Referen.…………....0.800V*.......:

    CPU Reference2………,,0.800V*.......:

    MCH/ICH
    MCH Core…………….....1.100V...........: 1.20-1.26
    MCH Reference….…….0.800V...........; <<< Leave << This may help, but you have to set it properly. See my singature MCH GTL ref link on how to set, you might need .68-.74 or .78-.84, but you have to set it correctly so please see the link I mentioned
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave

    DRAM
    DRAM Voltage ……....1.800V............: 2.1v
    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] Enabled if you use Vmware/Virtual PC

    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB[/B]
    Last edited by wingman99; 09-08-2010 at 03:03 PM.

  4. #14
    Chike is offline Senior Member
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    Default Re: EP45-UD3L having truble at 4.0 GHz

    Did you adjust MCH Reference as Lsdmeasap explained?
    Try also adjusting CPU Reference the same way, but try higher first, the default is 0.76v @ 1.2v VTT.
    And maybe 1.28-1.3v MCH Core.

  5. #15
    kick's Avatar
    kick is offline Senior Member
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    Default Re: EP45-UD3L having truble at 4.0 GHz

    Its not the 45 chipset as such.x 48 doesnt allways clock that well.
    Its getting the right settings for your components to work together above 450/1800fsb.
    That and a memory bandwidth limit of around 10 Gb/s approx for us 775 intel mboard people at least.latency maybe 60ns or so but trying for bandwidth above 10gb/s on read isnt likely to work.

    Any settings you apply that try and exceed that seem(in general) to fail.

    Id link my own full bios settings, but in and around 500fsb for a quad there are so many variables like memory type/power supply loading/mch cooling/2 gx cards running thru mch or not etc that one persons settings may not work for u.
    You can find em tho on older posts of mine.

    Id check out the member "conners" and his quest for 500(2000) fsb thread on his 9550

    There should be loads of links from that .

    There is also another member looking for 4.2 on his 9550 on this page.
    I dont have all the settings i tried between 450 and 500 fsb or even my 525 "validations" anymore
    I do have my 490 and 500 profiles saved and a backup 450 one which is the last point I could use my memory at 4-4-4-12 timings with pl7.(on 2:00D multiplier)
    Last edited by kick; 09-09-2010 at 04:51 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  6. #16
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EP45-UD3L having truble at 4.0 GHz

    I think 1.4 Vtt is a bit much for that FSB, more is not always the answer - please keep this in mind.

    For 470 FSB 1.28-1.34 Vtt should be plenty, even for a voltage hungry CPU

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