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Thread: Need help OC my E8400




  1. #1
    Join Date
    Nov 2008
    Posts
    10

    Lightbulb Need help OC my E8400

    Hi guys, I am current OCing to 3.2 but I think it should do 3.6 because I am using an powerful cooler. I know what you guys need since I have been around in the forum for a while. Thanks in advance!
    My spec
    ASUS EAH4850/HTDI/512M Radeon HD 4850 512MB GDDR3 PCI Express x16<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
    (2.0v) <o:p></o:p>
    <o:p></o:p>
    INTEL BX80570E8400 Core 2 Duo E8400 3.00 GHz 1333 MHz Socket 775 6MB
    <o:p></o:p>
    OCZ OCZ2G8004GK DDR2 PC2-6400 800MHz 4GB (2x2048)
    <o:p></o:p>
    <o:p></o:p>WESTERN DIGITAL Caviar SE320GB Hard Drive WD3200AAJS 320GB SATA II<o:p></o:p>
    7200 RPM 8MB Buffer Hard Drive<o:p></o:p>
    <o:p></o:p>
    GIGABYTE GA-EP45-DS3R(F7)
    <o:p></o:p>
    COOLMAX NW-650B 650W SLI/CrossFire Here is my setting:

    Current Bios Settings:

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.2ghz (401x8)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 401MHz
    PCI Express Frequency (Mhz) .........:100MHz

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


    Advanced Clock Control
    CPU Clock Drive...........................:800
    PCI Express Clock Drive.................:900
    CPU Clock Skew (ps)....................:0
    MCH Clock Skew (ps)...................:0


    DRAM Performance Control
    Performance Enhance...................: standard
    Extreme Memory Profile (X.M.P.).....:Disabled
    (G)MCH Frequency Latch...............:Auto
    System Memory Multiplier ..............: 2.00D
    Memory Frequency (Mhz) ..............: 800Mhz
    DRAM Timing Selectable ................: Auto


    Standard Timing Control
    CAS Latency Time........................6 [6]......Cpuz reported
    tRCD .........................................6 [8].Cpuz reported
    tRP'...........................................6 [8].Cpuz reported
    tRAS..........................................18 [22].Cpuz reported

    Set all highest below first then lower later

    Advanced Timing Control
    tRRD...........................................3 Auto
    tWTR..........................................3 Auto
    tWR............................................6 Auto
    tRFC...........................................46 Auto
    tRTP...........................................3 Auto
    Command Rate (CMD) ....................0 Auto

    Channel A
    Static tRead Value.........................:9 Auto
    tRD Phase0 Adjustment...................:0 Auto
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:6 Auto
    Twr2wr(Different Rank)...................:6 Auto
    Twr2rd(Different Rank)...................:5 Auto
    Trd2wr(Same/Diff Rank)..................:8 Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:9 Auto
    tRD Phase0 Adjustment...................:0 Auto
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:6 Auto
    Twr2wr(Different Rank)...................:6 Auto
    Twr2rd(Different Rank)...................:5 Auto
    Trd2wr(Same/Diff Rank)..................:8 Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control
    Voltage Type.………... line calibration currently set to Enabled
    CPU
    CPU Vcore….……….........................:1.23125V (1.2000 cpuz reported)
    CPU Termination…..... 1.200V*.......: Auto
    CPU PLL…………………....1.500V*.......: Auto
    CPU Referen.…………....0.760V*.......: Auto
    CPU Reference2………,,I don’t see this line in bios

    MCH/ICH
    MCH Core…………….....1.160V
    MCH Reference….…….0.760V...........:Auto
    MCH/DRAM Ref.…......0.900V...........:Auto
    ICH I/O……………….....1.500V............:Auto
    ICH Core…………...……1.100V............:Auto

    DRAM
    DRAM Voltage ……....1.820V
    DRAM Termination .…0.910V............:
    Channel A Reference 0.900V............: Auto
    Channel B Reference 0.900V............: Auto

    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.........................: [Enabled]
    Virtualization Technology................: [Enabled]

  2. #2

    Default Re: Need help OC my E8400

    well first of all ... hard code your ram ... to your spec .. 5-5-5-18 ( or what ever it is) might need your comand rate = 2 .... also hard code your PLL too..

    then start up your FSB ... it's fail then add more Vcore .... add more and till fail then up your cpu termination 1 step also and/or your MCH voltage too .... that is how i do it ... you should not have much problem to 3.6

    ohh... i see that you have your line calibration currently set to Enabled ... this one i'm not so sure ... i use quad and need to set this disable if not i be frying my CPU ... dual i'm not sure ... but intell spect is disable.

  3. #3
    Join Date
    Nov 2008
    Posts
    66

    Default Re: Need help OC my E8400

    Below is where I'm at with 2 x 2gb of G.Skill PI's with the exception of some timings.... I'm at 4-4-4-12. If you are stable at 5-5-5-15 then bump the timings to 4-4-4-12 at each point of testing.

    Got some of my info here by myself and a most with a lot of PM's with LSD......

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.2ghz (401x8)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 401MHz >> Straight to 420fsb :) Go up in 5mhz increments if it passes testing at each increase.
    PCI Express Frequency (Mhz) .........:100MHz

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

    Advanced Clock Control
    CPU Clock Drive...........................:800
    PCI Express Clock Drive.................:900
    CPU Clock Skew (ps)....................:0>> 50
    MCH Clock Skew (ps)...................:0>> 100


    DRAM Performance Control
    Performance Enhance...................: standard
    Extreme Memory Profile (X.M.P.).....:Disabled
    (G)MCH Frequency Latch...............:Auto
    System Memory Multiplier ..............: 2.00D
    Memory Frequency (Mhz) ..............: 800Mhz
    DRAM Timing Selectable ................: Auto>> Manual


    Standard Timing Control
    CAS Latency Time........................6 [6]>> 5 >> try 4 after stable
    tRCD .........................................6 [8]>> 5>> try 4 after stable
    tRP'...........................................6 [8]>> 5>> try 4 after stable
    tRAS..........................................18 [22]>> 15>> try 12 after stable

    Set all highest below first then lower later

    Advanced Timing Control
    tRRD...........................................3 Auto >> 4
    tWTR..........................................3 Auto >> 4
    tWR............................................6 Auto >> 8
    tRFC...........................................46 Auto >> 52
    tRTP...........................................3 Auto >> 4
    Command Rate (CMD) ....................0 Auto >> 2

    Channel A
    Static tRead Value.........................:9 Auto >> 9>> try 8 or 7 after stable
    tRD Phase0 Adjustment...................:0 Auto >> all below AUTO
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:6 Auto
    Twr2wr(Different Rank)...................:6 Auto
    Twr2rd(Different Rank)...................:5 Auto
    Trd2wr(Same/Diff Rank)..................:8 Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:9 Auto >> 9>> try 8 or 7 after stable
    tRD Phase0 Adjustment...................:0 Auto >> all below AUTO
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:6 Auto
    Twr2wr(Different Rank)...................:6 Auto
    Twr2rd(Different Rank)...................:5 Auto
    Trd2wr(Same/Diff Rank)..................:8 Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control
    Voltage Type.………... line calibration currently set to Enabled
    CPU>> Disable!!
    CPU Vcore….……….........................:1.23125V>> 1.3750v
    Termination…..... 1.200V*.......: Auto >> 1.28v
    CPU PLL…………………....1.500V*.......: Auto >> 1.35v
    CPU Referen.…………....0.760V*.......: Auto
    CPU Reference2………,,I don’t see this line in bios

    MCH/ICH
    MCH Core…………….....1.160V>> 1.3v
    MCH Reference….…….0.760V...........:Auto
    MCH/DRAM Ref.…......0.900V...........:Auto
    ICH I/O……………….....1.500V............:Auto >> 1.55ish
    ICH Core…………...……1.100V............:Auto

    DRAM
    DRAM Voltage ……....1.820V >> 2.00v should be a safe starting point
    DRAM Termination .…0.910V............:
    Channel A Reference 0.900V............: Auto
    Channel B Reference 0.900V............: Auto

    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.........................: [Enabled]>> Disable
    Virtualization Technology................: [Enabled]
    Gigabyte EP45- UD3P
    E8500 Wolfdale @ 4.1ghz
    2x2gb G.Skill PC6400, DDR864, 5-4-4-12
    (3)- Samsung 320gb Spinpoint hdd's in Raid 5
    ASUS TOP 4850 w/Glaciator Fansink
    Lite-On 16x DVD x 2
    D-Tek Fuzion WB
    Thermochill PA120.2 radiator
    2x120 SFF21-F fans
    Liang D5 pump

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Need help OC my E8400

    Let me know if you need more help, the above advice is good for sure

    3.6 would just need your ram timings set, more vcore and termination, and of course FSB.

    45Nm CPU, disabled Loadline calibration and find your own stable Vcore. What you set in the BIOS will just be less in windows, easily compensated for.

    Let me know if you would like a full set of settings/ranges for your setup. You should easily be able to do 4Ghz so 3.6 should be super easy for you

  5. #5
    kpo6969's Avatar
    kpo6969 is offline Member
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    Default Re: Need help OC my E8400

    Why are you using x8 when the multiplier for the E8400 is x9 ?
    GA-Z97X-UD5H rev 1.0 F9f
    i7-4790K
    Trident X 2400C9D-8GTXD
    Asus GTX 970 Strix
    Samsung 850 Pro 256GB Ocz Vector 150 240GB Samsung 840 Evo 250GB
    Fractal Design R4
    Noctua NH-U14S
    SeaSonic 660XP2
    Creative Extreme Music
    U2412M
    Windows 10 x64 Pro

  6. #6
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    Nov 2008
    Location
    London, UK
    Posts
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    Default Re: Need help OC my E8400

    You might want to look at the settings in this post as it's a similar setup to yours:
    http://forums.tweaktown.com/f69/than...p45-ds4-28563/

    However, he has PC2-9600 which he can run at 500x2.4=1200MHz. Your PC2-6400 memory is rated to only 800MHz, but it's good quality so may be OK to 1000MHz or so, probably with extra volts. Those CPUs are usually good for a bit over 4GHz. Considering your memory I suggest you aim for 445x9=4005MHz on your CPU with memory at 445x2=890MHz; you might be able to get your memory to run at 445x2.4=1068MHz. Before that you might want to try CPU @ 400x9=3600MHz, mem @ 400x2.0=800MHz. If your memory is OK with extra volts and OCing then you could try to push it to 400x2.4=960MHz.

    I would also ensure your case cooling is good, with in/out fans front/rear. Might want to add a small fan to the MCH heatsink and some fans on the memory too if you increase vmem and OC it much.

    Good luck.

  7. #7
    Join Date
    Nov 2008
    Posts
    10

    Default Re: Need help OC my E8400

    Thanks guys! I have moved up my CPU to 370x9 yesterday and I want to stay at that for 1-2 days to test the stability. Currently I do have issues that I susupect is related with my memory(?) As sometimes when I play my fallout3 it would say "fallout3.exe" has gone wrong and I am forced back to my desktop. So I guess a full setting will be very helpful from you Lsdmeasap. Thanks!



    Quote Originally Posted by Lsdmeasap View Post
    Let me know if you need more help, the above advice is good for sure

    3.6 would just need your ram timings set, more vcore and termination, and of course FSB.

    45Nm CPU, disabled Loadline calibration and find your own stable Vcore. What you set in the BIOS will just be less in windows, easily compensated for.

    Let me know if you would like a full set of settings/ranges for your setup. You should easily be able to do 4Ghz so 3.6 should be super easy for you

  8. #8
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Need help OC my E8400

    Are you sure your card is not overheating which causes your issue mentioned above?

    Here would be full optimal settings for 3.6 >>>

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Fast]
    CPU Clock Ratio ..........................: 9x
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.618ghz (402x9)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 402MHz
    PCI Express Frequency (Mhz) .........:100MHz

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


    Advanced Clock Control
    CPU Clock Drive...........................:800
    PCI Express Clock Drive.................:900
    CPU Clock Skew (ps)....................:0
    MCH Clock Skew (ps)...................:150


    DRAM Performance Control
    Performance Enhance...................: standard
    Extreme Memory Profile (X.M.P.).....:Disabled
    (G)MCH Frequency Latch...............:Auto
    System Memory Multiplier ..............: 2.00D or 2.00B
    Memory Frequency (Mhz) ..............: 804Mhz
    DRAM Timing Selectable ................: Manual


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

    Set all highest below first then lower later

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

    Driving Strength Profiles
    Driving Strength ............................ 800-1066

    Channel A
    Static tRead Value.........................:9-12
    tRD Phase0 Adjustment...................:0 Auto
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:6 Auto
    Twr2wr(Different Rank)...................:6 Auto
    Twr2rd(Different Rank)...................:5 Auto
    Trd2wr(Same/Diff Rank)..................:8 Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:9-12
    tRD Phase0 Adjustment...................:0 Auto
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:6 Auto
    Twr2wr(Different Rank)...................:6 Auto
    Twr2rd(Different Rank)...................:5 Auto
    Trd2wr(Same/Diff Rank)..................:8 Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control
    Voltage Type.………... line calibration currently set to Enabled << Disabled
    CPU
    CPU Vcore….……….........................:1.23125V (1.2000 cpuz reported) << maybe more? All up to your chip, may need up to 1.25-1.29 Actual for 3.6

    CPU Termination…..... 1.200V*.......: 1.24-1.32
    CPU PLL…………………....1.500V*.......: Set to 1.5
    CPU Referen.…………....0.760V*.......: Auto

    MCH/ICH
    MCH Core…………….....1.160V .......... 1.2-1.3 (1.24-1.28 likely will be good)
    MCH Reference….…….0.760V...........:Auto
    MCH/DRAM Ref.…......0.900V...........:Auto
    ICH I/O……………….....1.500V............:1.55-1.6
    ICH Core…………...……1.100V............:1.1x-1.2

    DRAM
    DRAM Voltage ……....1.820V ............: 2.0-2.1
    DRAM Termination .…0.910V............: Auto
    Channel A Reference 0.900V............: Auto
    Channel B Reference 0.900V............: Auto

    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.........................: [Enabled] << Disabled
    Virtualization Technology................: [Enabled]

  9. #9
    Join Date
    Nov 2008
    Posts
    10

    Default Re: Need help OC my E8400

    Thanks a bunch. I am gonna try it out. About my video card, since I am using ATI tray so I am able to monitor the GPU temp. During game playing it usually levels up to 60-70C but hardly reach 80C. I wonder if that would be the problem? But fallout3 has its own issue as reported by other people as well.

  10. #10
    Join Date
    Nov 2008
    Posts
    10

    Default Re: Need help OC my E8400

    I wonder if it is necessary to keep up my bios version to the latest? Will there be some risks in ungrading my bios? Thanks!

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