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Thread: help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)




  1. #1
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    Default help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)

    hi Lsdmeasap,
    I am new to this forum. I see you help lot of people having problems with gigabyte mainboards so I decided to write to you for help since I am switching from a DFI P35 DARK MB to a new Gigabyte (first time I get a Gigabyte mb!) Ep45-DS3R v10 bios F10.
    I have a Q9450 Core2Quad cpu that runs overclocked @ 3,2ghz (8x400) on my DFI P35 mb without problems at 1,23v (CPU voltage as reported in CPU-Z). I also have 4gb or G-SKILL DDR2 1100 Ram (2x2Gb) PC2-8800 (CL5-5-5-15 at 1,8-1,9v) actually running at 800Mhz 4-4-4-12 @1,8v.
    May you please tell me how to configure bios on GA EP45-DS3R to obtain the same overclock (3,2 ghz with 800x4 or what you suggest) with the same voltages (if possible). I only do a mild overclock not to stress much my hardware. Many friends of mine with this gigabyte board told me it has bad overclock abilities and that when overclocked it tends to have frequent hardware failures. Is it true?

    Thank you in advance and sorry for my not so perfect english! ;)

  2. #2
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    Default Re: help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)

    well you've got a P45 board there, and they have huge cpu droop, so you'll have to combat that with more voltage, so you'll want a good cooler for this. Im just gonna suggest some settings for you here so you can test it and tell if it works. and you can always take it up, but if you do, make sure you increase the vcore

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................: 8
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.2Ghz


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 400MHz
    PCI Express Frequency (Mhz) .........:100MHz <--Always 100!!

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


    Advanced Clock Control
    CPU Clock Drive...........................:800
    PCI Express Clock Drive.................:900
    CPU Clock Skew (ps)....................:Leave at Auto or 0
    MCH Clock Skew (ps)...................:50-100ps


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 333MHz (or 400 if you go more than 420MHz FSB)
    System Memory Multiplier ..............: 2.66 (2.66x400=1064MHz)
    Memory Frequency (Mhz) ..............: 1064Mhz
    DRAM Timing Selectable ................: [Manual]

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

    Advanced Timing Control
    tRRD...........................................3-5
    tWTR.......................................... 4-7
    tWR............................................3-7
    tRFC...........................................52-58
    tRTP...........................................4-6
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value.........................:8-10
    tRD Phase0 Adjustment...................: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
    Dimm2 Clock Skew Control...............:Auto

    Channel B
    Static tRead Value.........................:8-10
    tRD Phase0 Adjustment...................: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
    Dimm2 Clock Skew Control...............:Auto

    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:1.35V (start there and see if you can boot, if you can then lower it a notch, if not up it a notch)
    CPU Termination…..... 1.200V*.......: Auto (or you can manually set as 1.3V)
    CPU PLL…………………....1.500V*.......: Auto (should be fine)
    CPU Referen.…………....0.755V*.......: Auto
    CPU Reference2………,,0.800V*.......: Auto

    MCH/ICH
    MCH Core…………….....1.100V...........:1.2-1.35
    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............:1.8-1.9V

    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]

    dont worry about the english, i understand where you're coming from
    NZXT Lexa BlackLine Case with Red LEDs
    Corsair TX-750 Modular PSU
    Gigabyte EP45-DS3P (BIOS F7)
    Intel Core 2 Quad Q9300 @ 3.73GHz (downclocked for the summer )
    OCZ Vendetta 2 CPU Heatsink
    2x 2GB Kingston HyperX RAM PC2-6400 @ 996MHz (4-5-5-15)
    3x Seagate Barracuda 7200.11 500GB HDD in RAID5
    2x HIS Radeon HD 4850 @ 745/1090 in CrossFireX
    2x ThermalTake DuOrb GPU Heatsink
    D-Link Super G PCI WLAN Adapter
    Asus Lightscribe 20x SATA II DVD-DL Burner
    Creative X-Fi XtremeGamer Fatal1ty Pro
    2x 22" LG W2252TQ-PF Widescreen LCD Monitor (YAY!! Finally got the second one!!)

  3. #3
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)

    WOW, Someone coming from a DFI to Gigabyte Needs help? Aren't the DFI BIOS's far more advanced?

    BongWizard got you some answers before I got around, so those are good. it is pretty much what I would have suggested to you except for this I would use 402 for so you are not right on the strap line >>>
    CPU Host Frequency (Mhz) ............: 402MHz

  4. #4
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    Default Re: help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)

    thank you for your support!
    no problem for the cooler, I have just bought a Zerotherm Zen120 L.E. (I used a Zalman CU 9500 Led before) even if I do not understand: if there is a huge vdrop and the cpu vid in the bios does not correspond to the real one, there is no difference at all! I mean: I set a bios value of 1,35v but Cpu-z gives me a real value of 1,23v. So why I have to care more about cooling? after all the same voltage will be applied to the cpu, even if the bios signs a higher value, it's just cosmetic! Isn't it?

  5. #5
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    Default Re: help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)

    Quote Originally Posted by Lsdmeasap View Post
    WOW, Someone coming from a DFI to Gigabyte Needs help? Aren't the DFI BIOS's far more advanced?

    BongWizard got you some answers before I got around, so those are good. it is pretty much what I would have suggested to you except for this I would use 402 for so you are not right on the strap line >>>
    CPU Host Frequency (Mhz) ............: 402MHz
    Thank you for your further advice, Lsdmeasap!

    DFI Bioses are more advanced only when one needs to play with DDR2 fine settings, just to squeeze the maximum frequency possible from ram.

    I only need to be sure I keep going @ 3,2Ghz with my Q9450 Cpu without having issues and without risking to fry anything ;)

    I read lot of threads here about this EP45-DS3R, but nobody seems to care about cooling the northbridge, I thought it was almost mandatory when running the chipset @ frequency of 400 and more...

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: help overclocking a Q9450 with Ep45 DS3R (first time Gigabyte user!)

    Ahh I thought that all DFI's had 100's of BIOS options for all aspects of overclocking not just the ram

    Na, I dont think P45 NB gets too hot. I do redo my thermal pastes under all heatpipes and heatsinks when I first get a board before I even turn it on. But Mine is running at 36C with a 450-475 FSB

    And He just told you that info incase you started more overclocking. P45 Does have a much larger vdrop/vdroop then P35 had. So just a reminder if things start failing

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