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Thread: Advice for minor OC of GA-EP45-UD3R and E8400




  1. #1
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    Question Advice for minor OC of GA-EP45-UD3R and E8400

    Hello all,

    After many days of browsing the excellent information on this site, I'm ready to jump in and participate. I have a particular setup I'm looking to get some advice on, so without further ado, here's my information:

    Gigabyte GA-EP45-UD3R motherboard
    Intel Core 2 Duo E8400 Wolfdale processor
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Newegg.com - G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory - Desktop Memory
    eVGA GeForce 9800 GT 512MB 256-bit GDDR3 video card.

    I am only interested in minor overclocking of the stock processor speed from 3.0GHz to maybe 3.2GHz, so nothing too cutting edge. My loading applications are Photoshop CS4 and Flight Simulator 2004. I don't play any other games other than Flight Simulator, but the game often entails numerous hours of continuous simulation, so my needs are stability over performance. A 9800 GT is more than enough for Flight simulator 2004 anyway. I also want to make sure I get that 1066 speed out of my memory.

    Sorry if I am being long-winded in my first post, but I wanted to make sure you have enough information to help me out. I should be receiving all my parts tomorrow and will begin building this week. Obviously the motherboard will be set to optimum defaults at first, but I'm sure we can do a bit better no?

    Thanks in advance!

    -- Outer Marker
    Last edited by Outer Marker; 01-06-2009 at 07:39 AM.

  2. #2

    Default Re: Advice for minor OC of GA-EP45-UD3R and E8400

    If its like my E8400 it will do 3.8Ghz on stock voltages so 3.6 would be an easy OC. Just set the FSB to 400 and should be good even w/ a stock intel cooler
    New Q9650, Gigabyte UD3P, 4GB OCZ Platinum, Asus TOP 4850, Antec TP3 550W, Vista 64 SP1/XP SP3.

    http://www.cardomain.com/ride/2641801

  3. #3
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    Default Re: Advice for minor OC of GA-EP45-UD3R and E8400

    That's great news, thanks! So assuming I go 3.6GHz at stock voltages, and all goes well, would it be worth seeing how far I can back off voltages to keep temperature and power consumption to a minumum?

    LSD - do you have a template for this sort of setup?

    Many thanks for all this info guys,

    -- Outer Marker.

  4. #4

    Default Re: Advice for minor OC of GA-EP45-UD3R and E8400

    Quote Originally Posted by Outer Marker View Post
    So assuming I go 3.6GHz at stock voltages, and all goes well, would it be worth seeing how far I can back off voltages to keep temperature and power consumption to a minumum?
    Yes may be able to back it off some. Also if you are into saving power like I am then after making sure its stable then try the EIST and C1E/2E/4E, ect.. to lower the cpu clock at idle(if your not crunching) and lower volts further. Also try DES software as long as it works good for you(some have issues, mine worked good but the board made a high pitched noise when DES was enabled). If you do use low power state(6x multiplier x your FSB, then its best to stability test that low voltage setting also to make sure your all around stable).

    Also be aware that these boards seem to have issues with "hibernate/sleep" after OC'd to a point.

    BTW, mines an E0 stepping, if your is C0 then 3.6 is prob max on 1.25v???

    Mainly set the PCI-E frequency to 100, disable legacy USB support, set the MCH to 1.24-1.28 for 4GB, set the Dram voltage to what your memory says and same with the timings, make sure its stable at stock. You may find you need to change the MCH reference to lower setting
    Last edited by SpeedEuphoria; 01-06-2009 at 10:16 AM.
    New Q9650, Gigabyte UD3P, 4GB OCZ Platinum, Asus TOP 4850, Antec TP3 550W, Vista 64 SP1/XP SP3.

    http://www.cardomain.com/ride/2641801

  5. #5
    Lsdmeasap's Avatar
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    Default Re: Advice for minor OC of GA-EP45-UD3R and E8400

    Sure do here ya go man >>>
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.609


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 401Mhz
    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]
    System Memory Multiplier ..............: 2.66D
    Memory Frequency (Mhz) ..............: 1066Mhz
    DRAM Timing Selectable ................: [Manual]

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

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

    Driving Strength Profiles
    Driving Strength ............................800/1066 (Test both)

    Channel A
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
    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.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
    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….……….........................:1.25-1.36 (All up to your chip and boards Vdrop/Vdroop. Do not use Auto, same applies for Vtt and PLL below, do not use Auto when overclocking)

    CPU Termination…..... 1.200V*.......: <<< 1.2-1.36 (1.2-1.28 likely plenty)
    CPU PLL…………………....1.500V*.......: << 1.5-1.58

    CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly

    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.2-1.3 (1.22-1.26 likely good)
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< 1.5-1.6
    ICH Core…………...……1.100V............: <<< 1.1x-1.2

    DRAM
    DRAM Voltage ……....1.800V............: 2.0-2.1
    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

  6. #6
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    Default Re: Advice for minor OC of GA-EP45-UD3R and E8400

    Thanks for this LSD, I like the looks of it. Before I aim for that high, I'd like to work on a profile that gives me 3.4 GHz - might even be able to stay closer to stock voltages no?

    I was thinking of a 380 MHz FSB * 9 multiplier for 3420

    Now how would the memory clocks need to change? I was thinking of a 3.2B to stay on the 333 strap or is that not adviseable? Is the 400 strap even possible for me (2.66D) if I do a 380 FSB as above?

    I'm not understanding the relationship (if any) of the "strap" to aim for and how it related to FSB.

    -- Outer Marker.

  7. #7
    Lsdmeasap's Avatar
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    Default Re: Advice for minor OC of GA-EP45-UD3R and E8400

    You may be able to use either strap at 380 FSB, so you would have to try both out. B would be better though. But I dont think your ram will run at 1216Mhz so you would have to use 2.40B or 2.66D.

    MCH Voltage may need to be adjusted for either strap/multi change. So if it wont boot for you try less/more MCH Voltage. And of course set the Static tRead Value to 10-12 for now until you get situated

    Lower strap is better NB Bandwidth/timings and would be less stable at High FSB. Higher strap is Looser NB Bandwidth/timings and would be more stable at higher FSB.

    The lower strap would give best performance but is often hard to get stable at higher FSB's. You should be able to use B though up to 400 FSB without much issue

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