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Thread: Questions regarding Q9550, EP45-UD3P Overclocking




  1. #1
    Join Date
    Apr 2009
    Posts
    3

    Default Questions regarding Q9550, EP45-UD3P Overclocking

    Hello all,

    This seems like a nice lively forum, so I thought I'd give a try to getting some of my questions answered. Any help is appriciated and will be used!!

    My rig is below, as is my current MB Intelligent Tweaker Settings

    My ultimate goal is obviously to be as fast, stable and cool as possible. I have played with several of the values, but am cautious because I cant seem to find info specific enough to my set up.

    My first predicament is the CPU voltages other than core. I understand that at least 3-5 C can be shaved off from minimizing these, but I dont know a good place to start. This is mainly because I cannot make the connection between the voltages my mobo offers me to change (termination, refference etc), and any of my hardware monitering software voltages. What the heck is 3.3V, 5V, 12V and VBAT? are these correlated in any way? I currently have all CPU voltages on auto, except Vcore, and I cant see what auto is setting. If i knew this, i would have a place to start tweaking from. Clearly, I am fairly new at this OC thing! (< month)

    In addition to the above question, I am very interested in any suggestions you may have for the rest of my settings.

    The below settings have been tested via Prime and have been stable for roughly 24hours. My temps are currently between 30-37 idle (depending on system temp), and 55-60 full load. These temps are not dangerously high, but i need them lower, especially if I want to push my Ghz a little more (am hoping for beteen 4.0 - 4.2)

    Rig:
    Windows XP Prof. SP3
    Q9550
    EP45-UD3P
    4x 1G Gskill pc2-6400 5-5-5-15
    Seagate 1.5TB 7200rpm
    NZXT Tempest Case
    Xigmatek HDT S1283 CPU cooler
    Antec 650w PS

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................: +0.5x
    CPU Frequency ...........................: 3.82 Ghz


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 450 Mhz
    PCI Express Frequency (Mhz) .........: 100

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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 900
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<< 0
    MCH Clock Skew (ps)...................: <<< 0


    DRAM Performance Control
    Performance Enhance...................: [Turbo]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 2.00D
    Memory Frequency (Mhz) ..............: 900 Mhz
    DRAM Timing Selectable ................: [Auto]

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

    Set all Suggested below to highest Values first. Then later you can lower, one at a time, testing as you go

    Advanced Timing Control
    tRRD...........................................4 auto
    tWTR..........................................5 auto
    tWR............................................6 auto
    tRFC...........................................52 auto
    tRTP...........................................5 auto
    Command Rate (CMD) ....................: 0 auto

    Driving Strength Profiles
    Driving Strength ............................

    Channel A
    Static tRead Value.........................:
    400/D MCH
    tRD Phase0 Adjustment...................:Auto <<< 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...................:Auto <<< 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….……….........................:1.31875 V

    CPU Termination…..... 1.200V*.......: << Auto
    CPU PLL…………………....1.500V*.......: << Auto
    CPU Referen.…………....0.755V*.......: <<< Auto
    CPU Reference2………,,0.800V*.......:<<< Auto

    MCH/ICH
    MCH Core…………….....1.100V...........: << Auto
    MCH Reference….…….0.800V...........; <<< Auto
    MCH/DRAM Ref.…......0.900V...........: <<< Auto
    ICH I/O……………….....1.500V............: <<< Auto
    ICH Core…………...……1.100V............: <<< Auto

    DRAM
    DRAM Voltage ……....1.800V............: 1.920 V
    DRAM Termination .…0.900V............: <<< 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.........................: [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


    Thanks so much for any help

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Questions regarding Q9550, EP45-UD3P Overclocking

    Hope I can help!!

    These you ask about (3.3V, 5V, 12V and VBAT) are your voltages from your Power Supply, nothing to do with your BIOS settings. That should help you sort some of your voltage thoughts out.

    The only voltages you will be able to check from the BIOS to Windows is the Dram Voltage and your Vcore. You can observe both of those with Everest Ultimate, which you can get here (I think you may be using this anyway by the way you worded those voltages above?) >>
    http://forums.tweaktown.com/f69/late...y-tools-30530/

    Voltages and Temps will appear in the Computer/Sensor Section

    Good thing you have asked for help as you cannot leave voltages on Auto, at least a few of them will be WAY Overvolted when you overclock (Vtt-Termination and PLL)

    Your temps are/will be ok once you set your own voltages, you should be able to hit 4Ghz or more without many issues and still be around 70-75C I would think.

    You do have a lot of Auto's so if you want help with this profile let me know and I will advise.

    To save these settings you are using now you can hit F11 on the MAIN page of the BIOS and name this 3.8 or something, then start on your 4Ghz setting and save that as a new Profile, be sure you move the cursor down so you do not overwrite your first profile. F12 on the MAIN page of the BIOS is load. If you switch between profiles, always check Memory Multi as sometimes it gets set back to Auto which can be to high and cause a boot failure leaving you with no clue as to why until you notice it.

    Here is what I would suggest you change/set for 4Ghz, voltage ranges and timings would actually be advised for 3.8-4Ghz so you can use them on the above as well.

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................: +0.5x
    CPU Frequency ...........................: 3.82 Ghz


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 470 Mhz
    PCI Express Frequency (Mhz) .........: 100

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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 900 << 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<< 0
    MCH Clock Skew (ps)...................: <<< 0


    DRAM Performance Control
    Performance Enhance...................: [Turbo] << Set to standard for now until you are done to rule this out as a issue
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 2.00B or 2.00D (B may be harder to get going at 400+ FSB, and will normally require a higher tRD so keep that in mind as well)
    Memory Frequency (Mhz) ..............: 940 Mhz
    DRAM Timing Selectable ................: [Auto]

    Standard Timing Control
    CAS Latency Time........................ 5/6
    tRCD .....................................5
    tRP'......................................5
    tRAS......................................15/18

    Set all Suggested below to highest Values first. Then later you can lower, one at a time, testing as you go

    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/Bench both last) 1066 may be best I would set that now, if it fails use 800 for now

    Channel A
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH << Set this A+B Should match
    tRD Phase0 Adjustment...................:Auto <<< 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 << Set this A+B Should match
    tRD Phase0 Adjustment...................:Auto <<< 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….……….........................:1.31875 V << more or less, depends on your CPU of course. Keep in mind you get less in windows at idle and less than that at load. 1.225-1.45+

    CPU Termination…..... 1.200V*.......: << 1.225-1.34
    CPU PLL…………………....1.500V*.......: << 1.5-1.58
    CPU Referen.…………....0.755V*.......: <<< Auto
    CPU Reference2………,,0.800V*.......:<<< Auto

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.2-1.3 (1.20-1.24 is often enough)
    MCH Reference….…….0.800V...........; <<< Auto
    MCH/DRAM Ref.…......0.900V...........: <<< Auto
    ICH I/O……………….....1.500V............: <<< 1.55
    ICH Core…………...……1.100V............: <<< 1.14-1.2

    DRAM
    DRAM Voltage ……....1.800V............: 1.920 V (Not sure here as you did not list the model or a link to your ram) 2.0-2.1 normally, but if you are unsure check your sticker or give me the model #

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

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