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Thread: GIGABYTE GA-EP45-DS3R and memory




  1. #1
    Join Date
    Oct 2008
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    Default GIGABYTE GA-EP45-DS3R and memory

    The following is my build components, soon to be ordered.
    -----------------------------------
    component list:
    CPU Intel Core 2 Quad Q9650
    Motherboard GIGABYTE GA-EP45-DS3R
    Video card GeForce GTX 260 Core 216
    Hard drive #1 program Western Digital VelociRaptor WD3000GLFS 300GB
    hard drive #2 data Western Digital Caviar SE16 WD6400AAKS 640GB
    ram CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800.5-5-5-18 timing
    psu PC Power & Cooling S75QB 750W ATX12V / EPS12V
    optical dvd (will use 2) LITE-ON Black 20X DVD+R
    case Antec Nine Hundred
    Creative Sound Blaster X-Fi XtremeGamer 7.1 Channels 24-bit
    operating system vista 64 home premium
    ----------------------------------------
    I have been researching the motherboard and the memory for some time now. I have read that the gigabyte GA-EP45-DS3R has issues with the corsair memory.
    The Mushkin, geil, g-skill were noted as being more compatable with the gigabyte (mushkin noted as best).
    I am considering the mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800, 4-4-4-12 and 2.0v-2.1v. Will I have
    to set the voltage in the BIOS? or will BIOSset itself to the ram being used?
    I have also read to install vista 64 with 1 2gig ram stick and having to tweak the BIOS to add more ram (increase to 4 gb total)
    I see that Gigabyte has bios version F10 (correct the S3 state with vista?) I have checked gigabytes site, F9 is the
    BIOS version needed for the Q9650, so will have to flash BIOS. (will use the guide seen in this forum)
    As I know little of overclocking, (would like to experimentsome after gaining a better working knowledge on the subject), I
    mainly want a very stable system. I am looking to be able to assemble the components and have them work without
    much fiddling in the BIOS, setting ram etc.Perhaps the motherboard I have choosen is not suitalble for my needs. ASUS?

    My question to those of you knowledgeable: What problems would you forsee if I build my system with items from
    my component list? Use the Mushkin memory instead of the Corsair? (voltage consideration). Consider a different, more
    USER FRIENDLY motherboard?
    What, if any problems after getting vista 64 installed, then adding the remaining 2 gb memory?
    Advice needed, thanks.

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GIGABYTE GA-EP45-DS3R and memory

    Yes, you will want/have to set the proper voltages, and some MCH voltage for 2x2.

    You can use any BIOS after the one for your CPU

    You will be fine installing with 2GB then stick in the other after you install your OS, and set some things in the BIOS. If you need help when you get to that please feel free to make a thread in the Gigabyte section and I can help you

    Build looks fine man!
    Last edited by Lsdmeasap; 12-01-2008 at 03:04 PM.

  3. #3
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    Default Re: GIGABYTE GA-EP45-DS3R and memory

    thanks for the reply lsd. the memory I will use is mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800. I see it has 4-4-4-12 and 2.0-2.1 volts. Will I need to change in bios using these specs? What is MCH voltage for 2x2? I may be getting ahead of the curve by
    trying to obtain as much info as I can so that when I set it all up, it will work. Are the manuals clear cut about the setup for both the motherboard and the memory?

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GIGABYTE GA-EP45-DS3R and memory

    Yes, you will need to set the voltage to 2.0-2.1 and timings to 444-12. The timings may get picked up when you set the voltage, but it depends on if you plan to manually set things in the BIOS or use XMP

    MCH voltage for 2x2 you will need to set to about 1.2-1.3

    Ya, the manual will help you with alot as far as getting setup.

    Good luck, and let us know when you get your system built

  5. #5
    Join Date
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    Canberra, Australia
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    Default Re: GIGABYTE GA-EP45-DS3R and memory

    I'll just recommend a few settings for optimal operation... if you want to get a decent overclock, you're gonna need a good cooler, i recommend the Tuniq Core Contact Freezer or the Noctua NH-U12P. You should be able to get at least 4GHz out of the CPU with the DS3R, so I'll give the settings i would suggest for 4GHz

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 4.01GHz (9x445=4005MHz)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 445
    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)....................: Auto or 0
    MCH Clock Skew (ps)...................: 50-100


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 400MHz
    System Memory Multiplier ..............: 2.00 (because you're using PC2-6400)
    Memory Frequency (Mhz) ..............: 890MHz (your Mushkins will do this no problem)
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time............................. 4
    tRCD .............................................. 4
    tRP'.............................................. ... 4
    tRAS.............................................. .. 12 (maybe 15 cause of the OC)

    Advanced Timing Control
    tRRD...........................................3-5
    tWTR.......................................... 4-7
    tWR............................................3-7
    tRFC...........................................52-58 (this is especially important for 2x2GB)
    tRTP...........................................4-6
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value............................:7-11
    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..........................:7-11
    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 (more may be neccesary, you'll have to play with this... up if you cant get the Windows, down if the rig dies after a while in Windows)
    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...........: 1.2-1.3V (important for 2x2GB)
    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.............: 2-2.1V
    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]

    Hope that helps a bit
    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!!)

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