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Thread: EP45T-Extreme Help me OC it! Q9550 8GB DDR3




  1. #1
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    Default EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    First post

    System Specs;

    q9550 @2.83ghz
    Gigabyte ep45t-extreme with Copper Radiator attached
    8gb DDR3 1600mhz G.Skill Trident (2gbX4 kit) ram (rated as 8-8-8-21 cmd rate 2 @ 1.65V)
    Sapphire 4870X2 VC
    WD 1TB 32mb 7200rpm Caviar HD
    TT ARMOR MX case
    TT TOUGH POWER 750W PSU
    Noctua NH-C12P HSF



    now I have read clocks of 3.5GB etc as being standard and seemingly 4gb is quite possible too.

    Considering the parts and bits Ive got with the HSF etc I should be able to OC quite well.

    Cant seem to OC it and I KNOW im doing something wrong because I should be easily getting 3.5GB CPU OC and quite a high RAM OC too.


    What should I do?

    Ambient temp 28 system 37 and cpu 31 so temp wise plenty left.



    F5g Bios

    GIGABYTE GA-EP45T_EXTREME
    [u]MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: AUTO
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................:+0.5
    CPU Frequency ...........................: 2.83 (333x8.5)Mhz
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Disabled]
    CPU Host Frequency (Mhz) ............:333Mhz
    PCI Express Frequency (Mhz) .........:AUTOMhz
    C.I.A. 2.............................:[Disabled]
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800 -AUTOmv
    PCI Express Clock Drive...................:900 - AUTO mv
    CPU Clock Skew (ps).......................: 0ps
    MCH Clock Skew (ps).......................: 0ps
    DRAM Performance Control
    Performance Enhance....................: STANDARD
    Extreme Memory Profile (X.M.P.)........: auto
    (G)MCH Frequency Latch.................: [Auto]333
    System Memory Multiplier ..............:4.00B
    Memory Frequency (Mhz) ..............: 1333Mhz
    DRAM Timing Selectable ................: [Manual]
    Standard Timing Control
    CAS Latency Time...............................: 8
    tRCD ..........................................: 8
    tRP'...........................................: 8
    tRAS...........................................: 21

    Advanced Timing Control [Press Enter]
    tRRD...........................................:4 - AUTO
    tWTR...........................................:4 - AUTO
    tWR............................................:8 - AUTO
    tRFC...........................................:60 - AUTO
    tRTP...........................................:4 - AUTO
    Command Rate (CMD) ............................:2


    {{{{{
    Channel A

    Channel A Timings Settings [Press Enter]
    Static tRead Value......................:Auto
    tRD Phase0 Adjustmen...................:Auto
    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 A Driving Settings [Press Enter]
    Driving Strength Profile:[AUTO]
    Data Driving Pull-Up Level.............:Auto
    Cmd Driving Pull-Up Level..............:Auto
    Ctrl Driving Pull-Up Level.............:Auto
    Clk Driving Pull-Up Level..............:Auto

    Data Driving Pull-Down Level...........:Auto
    Cmd Driving Pull-Down Level............:Auto
    Ctrl Driving Pull-Down Level...........:Auto
    Clk Driving Pull-Down Level............:Auto

    Channel B

    Channel B Timings Settings [Press Enter]
    Static tRead Value......................:Auto
    tRD Phase0 Adjustmen...................:Auto
    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 Driving Settings [Press Enter]
    Driving Strength Profile:[AUTO]

    Data Driving Pull-Up Level.............:Auto
    Cmd Driving Pull-Up Level..............:Auto
    Ctrl Driving Pull-Up Level.............:Auto
    Clk Driving Pull-Up Level..............:Auto

    Data Driving Pull-Down Level...........:Auto
    Cmd Driving Pull-Down Level............:Auto
    Ctrl Driving Pull-Down Level...........:Auto
    Clk Driving Pull-Down Level............:Auto
    }}}}}
    ALL SETTINGS ON DEFAULT AUTO
    [/COLOR]

    {U]Motherboard Voltage Control{/U]
    Voltage Type.…...……... Normal
    CPU
    CPU Vcore….………...........................:1.25 - AUTOv
    CPU Termination…...... 1.200V*...........: 1.2 - AUTOv
    CPU PLL………………….........1.500V*...........: v1.5 - AUTO
    MCH/ICH
    MCH Core……………..........1.100V............: 1.1 - AUTOv
    MCH Reference..…...….….0.800V............; 0.76 - AUTOv
    ICH I/O…………....……......1.550V............: 1.5 - AUTOv
    DRAM
    DRAM Voltage ……........1.500V............: 1.66v<----SINCE 1.65v isnt an option
    DRAM Termination ...…..0.900V............: 0.75 - AUTOv
    Channel A Data Vref ...0.75V.............: v
    Channel B Data Vref ...0.750V............: v
    Channel A Address Vref 0.75V.............: v
    Channel B Address Vref 0.750V............: v
    CHANNEL voltages ALL AUTO and same as above



    What should I do? What should I change and by how much?

    much appreciated

  2. #2
    Chike is offline Senior Member
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    MCH Core may need adjustment. Try it in the range of 1.2-1.26v until you reach stability.

    Have you Test it for stability before OCing?

  3. #3
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    Quote Originally Posted by Chike View Post
    MCH Core may need adjustment. Try it in the range of 1.2-1.26v until you reach stability.

    Have you Test it for stability before OCing?
    surely more than just that needs adjusting?

    I know people on here have the exact board and cpu and would love to know what they too did.


    and yes i did test before any OC and its flawless.

  4. #4
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    anyone?

  5. #5
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    You definitely have some top quality components.

    Do you know the stepping of your Q9550? CPU-Z will tell you on the main tab. If it's an E0 revision, then 4GHz + is well within reach. If it's a C1 though, aim for 3.6-3.8GHz. Anything more than thet on a C1 isn't guaranteed, although possible and the chip will likely need more voltage clock for clock than an E0.

    Overclocking with such a large amount of RAM can be problematic, which is why Chike went straight for MCH core voltage as an initial thing to tweak. In my opinion a saf range is 1.100-1.380V. For 8GB you'll almost definitely need 1.20V minimum. I would start at 1.24-1.26V and try working upwards first to 1.38 one step at a time, then if that fails, work down from the initial value towards 1.200V, trying below that is unlikely to work well but worth trying.

    MCH Core tuning is important, but also having the rest of your settings within the realms of correctness is important at the same time.

    I will freely admit that I have no personal experience with DDR3, but I do know that compared to DDR2, the subtimings as well as the main timings may need to be looser than for the same amount of DDR2.

    The following template reflects this. It's worth noting too that certain voltage settings when set to auto can be seriously over volted when overclocking. Ones you absolutely must set to manual levels are Vcore, PLL and CPU termination. All three of these voltages are potentially chip killers, literally.

    For now, it's also a good idea to disable EIST (Speedstep) and C1E Enhanced Halt. these are power saving measures which reduce the CPU multiplier at idle, and can cause stability problems. After achieving stability, you can of course try re-enabling them so save a little power and keep the CPU a bit cooler at idle (not that important but nice to do if possible). Definitely keep Thermal Monitor 2 enabled, as this is a vital safety feature. In the event of a fan failure or setting a huge Vcore by mistake this can save your CPU's life by slowing the CPU down or shutting the machine off all together. You may think that you'd never set enough Vcore for this to happen but it can happen by accident. I know that on my board, if you try and enter a voltage that can't actually be set (eg the voltage you want is 1.3625 and you enter 1.3626 and hit enter) it will default to the maximum the board can set, which is north of 2V.

    Give these settings a go as a start point. I've set enough Vcore so that it shouldn't be a problem. This is assuming that you have an E0 stepping. For C1, you may need more voltage. It may be useful to enable LLC (Load Line Calibration) along with the revised vcore to eliminate voltage fluctuations as a cause of instability. When everything else is tuned to be stable, this can be disabled and Vcore tuned down if possible.

    Give these settings a try. Nothing set here is dangerous, everything is well within tolerance:

    Code:
    GIGABYTE GA-EP45T_EXTREME
    [u]MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: AUTO
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................:+0.5
    CPU Frequency ...........................: 3.4Ghz (400x8.5)Mhz
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Disabled]
    CPU Host Frequency (Mhz) ............:400Mhz
    PCI Express Frequency (Mhz) .........:100Mhz <Set manually or as you raise FSB this will rise too. At 105Mhz I am unable to boot, so this is important.
    C.I.A. 2.............................:[Disabled]
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800 -AUTOmv
    PCI Express Clock Drive...................:900 - AUTO mv
    CPU Clock Skew (ps).......................: 0ps
    MCH Clock Skew (ps).......................: 0ps
    DRAM Performance Control
    Performance Enhance....................: STANDARD
    Extreme Memory Profile (X.M.P.)........: auto 
    (G)MCH Frequency Latch.................: [Auto]
    System Memory Multiplier ..............:4.00D Also try 4.00B, but D should better suit a 400 FSB
    Memory Frequency (Mhz) ..............: 1600Mhz
    DRAM Timing Selectable ................: [Manual] 
    Standard Timing Control
    CAS Latency Time...............................: 8
    tRCD ..........................................: 8
    tRP'...........................................: 8
    tRAS...........................................: 21
    
    Advanced Timing Control [Press Enter]
    tRRD...........................................:4 - 6  <-The sub timings here may seem loose, but they don't majorly effect RAM performance. They have a significant bearing on stability though. Lower each value one at a time when stable to max out performance
    tWTR...........................................:4 - 6
    tWR............................................:8 - 10
    tRFC...........................................:60 - 78
    tRTP...........................................:4 - 6
    Command Rate (CMD) ............................:2
    
    
    Channel A
    
    Channel A Timings Settings [Press Enter] 
    Static tRead Value......................:10 <-You may end up being able to use 8 or 7, but 10 gives enough headroom to be sure this isn't a factor.
    
    The settings I've removed from the RAM section are all OK on auto.
    
    Channel A Driving Settings [Press Enter] 
    Driving Strength Profile:[AUTO] <--- Set close to your RAM speed for this profile (1600)
    
    Channel B
    
    Channel B Timings Settings [Press Enter] 
    Static tRead Value......................:10 See Channel A tRead for details.
    
    
    Channel B Driving Settings [Press Enter] 
    Driving Strength Profile:[AUTO] <--Set the same as Channel A
    
    
    
    
    Motherboard Voltage Control
    Voltage Type.…...……... Normal 
    CPU
    CPU Vcore….………...........................:1.350V or as near as you can get to it.
    CPU Termination…...... 1.200V*...........: 1.28V <--May need from 1.22-1.32V, have a play.
    CPU PLL………………….........1.500V*...........: 1.57V <Ok up to 1.61 if necessary, but likely 1.57 is plenty.
    MCH/ICH
    MCH Core……………..........1.100V............: 1.26V. Try higher if needed first, then lower down to 1.18V. More than 1.2V likely needed as you have 8GB
    MCH Reference..…...….….0.800V............; When you adjust this, you need to temporarily set CPU term to 1.20V. Try this on [Auto] first. If unstable try setting 0.740V at 1.2 CPU Term, then 0.720V if still unstable. This will get higher as you increase CPU term back up, which is normal.
    ICH I/O…………....……......1.550V............: 1.550V
    DRAM
    DRAM Voltage ……........1.500V............: 1.66v<----SINCE 1.65v isnt an option
    DRAM Termination ...…..0.900V............: 0.75 - AUTOv <--Should be good on Auto
    Channel A Data Vref ...0.75V.............: v <-- This and the below 3 references should be good on Auto for this clock speed
    Channel B Data Vref ...0.750V............: v
    Channel A Address Vref 0.75V.............: v
    Channel B Address Vref 0.750V............: v
    CHANNEL voltages ALL AUTO and same as above
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
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    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
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  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    Let me know if you need any help here Psycho, I am back in the saddle now

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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    Quote Originally Posted by Psycho101 View Post
    You definitely have some top quality components.

    Do you know the stepping of your Q9550?<set manually="" or="" as="" you="" raise="" fsb="" will="" rise="" too.="" at="" 105mhz="" i="" am="" unable="" to="" boot,="" so="" this="" is="" important.=""><ok up="" to="" 1.61="" if="" necessary,="" but="" likely="" 1.57="" is="" plenty.="">
    Its E0

    </ok></set>
    Quote Originally Posted by Psycho101 View Post
    Overclocking with such a large amount of RAM can be problematic, which is why Chike went straight for MCH core voltage as an initial thing to tweak.
    Yep which is why I upgraded to these and at 1600 to give myself plenty of room to tweak.


    Quote Originally Posted by Psycho101 View Post
    It's worth noting too that certain voltage settings when set to auto can be seriously over volted when overclocking. Ones you absolutely must set to manual levels are Vcore, PLL and CPU termination. All three of these voltages are potentially chip killers, literally.
    Absolutely. Right now everything is on default hence why its all auto but when I do OC it like I want to I would set things manually.


    I'll try what your suggestions and see if I cant speed up both my ram and cpu. Will post back.

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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    Quote Originally Posted by Lsdmeasap View Post
    Let me know if you need any help here Psycho, I am back in the saddle now

    Chip in then

  9. #9
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    Psycho101

    Did those things with no luck.

    Without Adjusting the ADVANCED TIME CONTROL comp wouldnt even boot.

    Once adjusted it did boot but wouldnt even start windows obviously unstable blue screen mem dump and then reboot and it wouldnt boot up.

    what now?

    What would the BARE essentials be ?

  10. #10
    Chike is offline Senior Member
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    Default Re: EP45T-Extreme Help me OC it! Q9550 8GB DDR3

    Quote Originally Posted by evangelion View Post
    Psycho101

    Did those things with no luck.

    Without Adjusting the ADVANCED TIME CONTROL comp wouldnt even boot.

    Once adjusted it did boot but wouldnt even start windows obviously unstable blue screen mem dump and then reboot and it wouldnt boot up.

    what now?

    What would the BARE essentials be ?
    I have done some study, a little before, and a lot since I have began OCing.
    The first thing I've learned is: go by a 1/3 FSB/RAM speed, more than that will give you very little bandwidth wise, and latency will only improve for a very low latency modules. for 266x3=799 800, 333x3=1000 1066, 400x3=1200 1200/1033 DDR2/DDR3 respectively.*

    All timings accept CAS(CL) are given in time and not in cycles, BIOS computes the cycles needed based of the seleced RAM frequency.
    However CAS is given in cycles, it is given for a spesific frequency (different or the same CAS values may be specified for the different profiles.)
    Therefore if you are overclocking, the best thing is to leave them all on auto aside from tRD (Static tRead Value,) which I observed does not show at all in MemSet unless set manually, even set to the suggested BIOS value.
    After you boot (susccesfully) you may look at the currently applied values with MemSet to get the idea where to start from.
    Alternetively you may compute them yourself.
    Example: tRFC (a critical value which if set too low may cause data corruption,) is 42 for DDR-800. To get it's setting for 1066 the formula would be tRFC"=tRFC'/DDR'xDDR", 43/800x1066=52.9, quite safely you can use 52.
    If you look at your SPD, you'll see the formula works for all values. In fact only a single time value is given per variable (e.g. tRRD, tWR, tRFC,) in the SPD and the sotware convert it to the corresponding cycles value for the various supported frequencies. EPP also have all these values defined but likely to have the same value (time.) All this can be clealry seen with SPDTool.
    Now that you got the starting point you may begin your memory tweaks.

    * This rule only apply to Pentium/Core/Core 2 platforms, Core iX is a different story.


    If there are any inaccuracies, mistakes, false assumtions/statements in this post, pleas correct me where I am wrong.
    Last edited by Chike; 07-17-2009 at 10:13 PM. Reason: added *

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