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Thread: GA-EP45-DS5 & Q9550 Overclocking Settings!




  1. #1
    Join Date
    Jan 2009
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    Smile GA-EP45-DS5 & Q9550 Overclocking Settings!

    Hi All,

    Recently built myself a new rig over xmas and im looking to squeeze the most out of this system.

    Ive built computers before and consider myself an advanced user but ive never ever delved in to the world of overclocking, never had the need to personally.

    Was just wondering if theres anyone out there with my mobo, ram and cpu (all in my signature) thats had a decent stable OC? Ive read around and seen people cranking this beauty up to 3.4-3.8ghz with good stability!!

    Just looking for a little help with what to do, wether someone has some settings to share or has a rough idea what i would need to do?

    Any help is greatly appreciated!!

    p.s. Im running at stock speeds atm

    **Edit - Ive Overclocked it to 3.41GHz ... Runs stable (intel burn test & 2hours of prime)
    Last edited by balliance; 01-02-2009 at 11:16 AM.
    CPU: Intel Core 2 Quad Q9550 @ 3.41gHz
    CPU-Cooler: Zalman CNPS9700
    Mobo: GA-EP45-DS5 / Bios @ F12
    RAM: OCZ PC2-8500C5 1066MHz Reaper HPC Edition / 4gb
    GPU: XFX 9800 GTX+ 512mb
    PSU:
    Tagan PipeRock TG700-BZ 700w

  2. #2
    Join Date
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    Default Re: GA-EP45-DS5 & Q9550 Overclocking Settings!

    Sorry forgot to add bios settings ... find them below :)


    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................: .5
    CPU Frequency ...........................: 3.41GHz


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

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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 700mV
    PCI Express Clock Drive.................: 700mV
    CPU Clock Skew (ps)....................: 50ps
    MCH Clock Skew (ps)...................: 100ps


    DRAM Performance Control
    Performance Enhance...................: STANDARD
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 333MHz
    System Memory Multiplier ..............: 2.40B
    Memory Frequency (Mhz) ..............: 1066 965
    DRAM Timing Selectable ................: **AUTO** <<<< Set to auto as i was having boot problems with custom settings.

    Standard Timing Control
    CAS Latency Time........................: Auto
    tRCD .........................................: Auto
    tRP'...........................................: Auto
    tRAS..........................................: Auto

    Advanced Timing Control
    tRRD...........................................: Auto
    tWTR..........................................: Auto
    tWR............................................: Auto
    tRFC...........................................: Auto
    tRTP...........................................: Auto
    Command Rate (CMD) ....................: Auto

    Driving Strength Profiles
    Driving Strength ............................: Auto

    Channel A
    Static tRead Value.........................:**AUTO** << All set to auto as i had troble booting with custom settings.
    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.........................:**AUTO** Same, trouble while booting.
    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….……….........................: 1.35v
    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...........: 1.2v
    MCH Reference….…….0.800V...........: Auto
    MCH/DRAM Ref.…......0.900V...........: Auto
    ICH I/O……………….....1.550V............: Auto
    ICH Core…………...……1.100V............: Auto

    DRAM
    DRAM Voltage ……....1.800V............: 2.0v << My ram sticker says 2.2v , i havn't tried this setting yet!!
    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]

    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled] </pre>



    As stated above, ive oc'd to 3.41GHz ... Guess im just looking for a little help with my ram timings. Ive tried useing RAM settings from people here but it just failed to boot properly.

    So any help would be appreciated :)
    CPU: Intel Core 2 Quad Q9550 @ 3.41gHz
    CPU-Cooler: Zalman CNPS9700
    Mobo: GA-EP45-DS5 / Bios @ F12
    RAM: OCZ PC2-8500C5 1066MHz Reaper HPC Edition / 4gb
    GPU: XFX 9800 GTX+ 512mb
    PSU:
    Tagan PipeRock TG700-BZ 700w

  3. #3
    Join Date
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    Default Re: GA-EP45-DS5 & Q9550 Overclocking Settings!

    Been fiddling again with my ram timmings, just cant seem to get it to work!! Anyone around to give it a quick glance ?? LSD?

    Many Thanks
    CPU: Intel Core 2 Quad Q9550 @ 3.41gHz
    CPU-Cooler: Zalman CNPS9700
    Mobo: GA-EP45-DS5 / Bios @ F12
    RAM: OCZ PC2-8500C5 1066MHz Reaper HPC Edition / 4gb
    GPU: XFX 9800 GTX+ 512mb
    PSU:
    Tagan PipeRock TG700-BZ 700w

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP45-DS5 & Q9550 Overclocking Settings!

    Please start over, as I see you have loaded Fail Safe Defaults. Please load Optimized Defaults and set your ram voltage ONLY, then save/apply/reboot BACK to the BIOS. Once in the BIOS you will need to set your SATA/Disk settings again so do that first. Then go set all your other settings again, then go in MIT and put back what you had stable and save/apply/reboot Back to the BIOS. This time on the MAIN page hit F11 and save that as a stable profile, like 3.4 stable or something. Then start making the following changes and save that for now as a separate profile by going back to the main page and hit F11 again and name this one "Tweaking 3.4" or something like that.

    To load or switch between profiles anytime just go to the main page and hit F12 and choose a profile. Be sure when saving profiles that you do not overwrite your other saved ones. And be sure when loading or switching back and forth between profiles that before you save/apply you always check your ram multi as sometimes when switching profiles or loading one this gets set to auto which can often be a too high multi to boot with. So just keep a eye on that when using profiles.

    Here would be suggested optimal settings for the above settings you listed. A link to your ram would be great incase I need to edit anything in this template >>>>

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................: .5
    CPU Frequency ...........................: 3.41GHz


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

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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800mV
    PCI Express Clock Drive.................: 900mV
    CPU Clock Skew (ps)....................: 50ps << I would start with Zero
    MCH Clock Skew (ps)...................: 100ps << I would start with Zero


    DRAM Performance Control
    Performance Enhance...................: STANDARD
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: Auto
    System Memory Multiplier ..............: 2.66D <<< After 400 FSB 333/B Straps get harder and harder to use, best to use 400/D strap until you get stable, then you can work on trying to get a B Strap stable

    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: Manual

    Standard Timing Control
    CAS Latency Time........................: 5
    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..........................................: 3-6 (Set 12 first if you have issues)
    tWR............................................: 4-6 (Set 14 first if you have issues)
    tRFC...........................................: 52-62
    tRTP...........................................: 3-5
    Command Rate (CMD) ....................: 2

    Driving Strength Profiles
    Driving Strength ............................: 800/1066 (Test/Bench both last, set 1066 now)

    Channels A & B Should match below

    Channel A
    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

    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….……….........................: 1.35v
    CPU Termination…..... 1.200V*.......: ALWAYS SET when overclocking, Auto WAY Overvolts this (Suggested, depending on speed and vcore, 1.2-1.34) 1.2-1.28 should be good for this speed

    CPU PLL…………………....1.500V*.........: ALWAYS SET when overclocking, Auto WAY Overvolts this (1.35-1.6) 1.45-1.55 should be fine

    CPU Referen.…………....0.755V*.......: Auto

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

    MCH/ICH
    MCH Core…………….....1.100V...........: 1.2v << 1.2-1.3 (1.22-1.26 is usually good, depends on the strap and ram multi you are using, and the speed of course. Some straps/Multi's will need more others will not work without it being less.) Forgot to ask, is this 2x2 or 4x1 ram?

    MCH Reference….…….0.800V...........: Auto
    MCH/DRAM Ref.…......0.900V...........: Auto
    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 << 2.2V is just max allowed under warranty, not usually what is needed at all, and generally never needed until you highly overclock the ram

    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]

    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled]

  5. #5
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    Default Re: GA-EP45-DS5 & Q9550 Overclocking Settings!

    Thanks dude ill do what you said! Also below is a link to my RAM!! Maybe this will help :) .... Also im useing 2x2GB, so 4GB in total.

    OCZ Technology | Products | Memory | OCZ DDR2 PC2-8500 Reaper HPC 4GB Edition

    Many thanks
    Last edited by balliance; 01-03-2009 at 10:38 PM.
    CPU: Intel Core 2 Quad Q9550 @ 3.41gHz
    CPU-Cooler: Zalman CNPS9700
    Mobo: GA-EP45-DS5 / Bios @ F12
    RAM: OCZ PC2-8500C5 1066MHz Reaper HPC Edition / 4gb
    GPU: XFX 9800 GTX+ 512mb
    PSU:
    Tagan PipeRock TG700-BZ 700w

  6. #6
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    Default Re: GA-EP45-DS5 & Q9550 Overclocking Settings!

    Hey LSD,

    Ive done what you said, reset everything and loaded optimnized defaults and also saved a profile for Stable-Stock-Settings and Overclocked!

    Heres what ive done for my overclock:

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................: .5
    CPU Frequency ...........................: 3.41GHz


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

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


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


    DRAM Performance Control
    Performance Enhance...................: STANDARD
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: Auto
    System Memory Multiplier ..............: 2.66D <<< Set it to this like you said!

    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: Manual

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

    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
    tWTR..........................................: 6
    tWR............................................: 6
    tRFC...........................................: 62
    tRTP...........................................: 5
    Command Rate (CMD) ....................: 2

    Driving Strength Profiles
    Driving Strength ............................: 1066

    Channels A & B Should match below

    Channel A
    Static tRead Value.........................: 12
    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.........................: 12
    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….……….........................: 1.35v
    CPU Termination…..... 1.200V*.......: 1.26v

    CPU PLL…………………....1.500V*.........: 1.5v

    CPU Referen.…………....0.755V*.......: Auto

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

    MCH/ICH
    MCH Core…………….....1.100V...........: 1.24v

    MCH Reference….…….0.800V...........: Auto
    MCH/DRAM Ref.…......0.900V...........: Auto
    ICH I/O……………….....1.550V............: 1.2v
    ICH Core…………...……1.100V............: <<< Dont Have This in my Bios

    DRAM
    DRAM Voltage ……....1.800V............: 2.1v
    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]

    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled]

    Ive run memtest86 and intel-burn-test with NO errors :)

    What would be the next plan of action old chap?? Start lowering my ram timings??

    Also could i push this beauty a little further?? In RealTemp it shows the CPU average of 40-45 idle and 50-60 under load?? Although my bios says the CPU temp to be 28-30??

    Many thanks dude!
    CPU: Intel Core 2 Quad Q9550 @ 3.41gHz
    CPU-Cooler: Zalman CNPS9700
    Mobo: GA-EP45-DS5 / Bios @ F12
    RAM: OCZ PC2-8500C5 1066MHz Reaper HPC Edition / 4gb
    GPU: XFX 9800 GTX+ 512mb
    PSU:
    Tagan PipeRock TG700-BZ 700w

  7. #7
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP45-DS5 & Q9550 Overclocking Settings!

    Ya BIOS profiles are a very nice thing MANY people do not know about or take advantage of. I make note of it to users when I think of it and have the time

    Looks good, now you can start lowering things >>>

    Channel A & B
    Static tRead Value.........................: 12 << Start with this, 8-9 should work then you can work on the rest of the advanced timings

    Ya, you can for sure clock further if you like. If you do leave the ram loose as you have it so it is not a issue then once you get where you want you can start lowering timings and possibly voltages

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