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Thread: First OC - Newbie needs help with EP45-DS5




  1. #1
    Join Date
    Nov 2008
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    Default First OC - Newbie needs help with EP45-DS5

    Hi all,

    I've just put together my first build with the following:

    Q9550 2.83GHz (C1 Stepping)
    EP45-DS5
    Thermalright HR-01+ & Scythe 120mm S-Flex
    512MB 8800GT w/ Accelero S1 rev. 2
    Corsair HX620 PSU
    2x2GB Corsair XMS2 800MHz DHX Memory (4-4-4-12)
    640Gb Samsung F1 Drive
    Antec P182

    My case has good airflow so I would like to get to 3.4Ghz. Can I do it with the CPU at stock voltage? Some settings would be much appreciated.

    Thanks!

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: First OC - Newbie needs help with EP45-DS5

    You may or may not be able to with the stock voltage? All Chips are different so it is up to your chip really. And do keep in mind your board has a large vdrop/vdroop. So what you set in the BIOS may be .6 or so less in windows.

    Try this >>>

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 8
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3400
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 425Mhz
    PCI Express Frequency (Mhz) .........:Set to 100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 
    PCI Express Clock Drive.................: <<< 
    CPU Clock Skew (ps)....................: <<< 
    MCH Clock Skew (ps)...................: <<< 50-150
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto] or 400
    System Memory Multiplier ..............: 2.00D (you may also try 333 above with 2.00B here)
    
    Memory Frequency (Mhz) ..............: 850Mhz
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................4/5
    tRCD .........................................4
    tRP'...........................................4
    tRAS..........................................12/15
    
    Set all to highest below, then later lower one at a time testing with Memtest86+ as you go
    
    Advanced Timing Control
    tRRD...........................................3-5
    tWTR..........................................3-6 (use 12 first, then go to lower range)
    tWR............................................4-6 (use 14 first, then go to lower range)
    tRFC...........................................52-62 (use 68, same as above)
    tRTP...........................................3-6
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................800 or 1066, 1066 may be better to use
    
    Channel A
    Static tRead Value.........................:7-10 for 333 MCH (8/9-12 for 400 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.........................:7-10 for 333 MCH (8/9-12 for 400 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….……….........................: ALL up to your chip, keep in mind what you set will be far less in windows.  So you may need more then you are possibly thinking.  Maybe 1.3 or more actual, maybe not.  Just set high for sure so you can boot, then later lower until it fails and then raise back up a few
    
    CPU Termination…..... 1.200V*.......: <<< 1.2-1.34
    CPU PLL…………………....1.500V*.......: << Please set to stock, Auto overvolts this way to much
    
    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...........: << 1.15-1.3
    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............: 2.0-2.1 (Check your ram sticker and set accordingly
    
    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

  3. #3
    Join Date
    Nov 2008
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    2

    Default Re: First OC - Newbie needs help with EP45-DS5

    Thanks Lsdmeasap! Worked a charm. I've tweaked the settings you gave me and now I am idling in the mid 30s and peaking in the low 50s after several hours of Prime95 torture.

    Only using two silent fans in my case as well :-)

    Thanks again!

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: First OC - Newbie needs help with EP45-DS5

    Great to hear it! Thanks for the kind words and post back anytime

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