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Thread: How to set memory timings - 2 different latencies




  1. #11
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    Default Re: How to set memory timings - 2 different latencies

    Because the NB component has both an adjustable VID and an ove rvoltage control. Adjusting either will give more voltage to the NB.

    It's similar to the VID adjustment on Athlon64/X2 and later. You could adjust the VID from between 1.35V and 1.45V as well as being able to add +x amount to what ever VID is selected. Eg a VID set to 1.4V with +0.025V=1.425v. The same +0.025 added when the VID is set to 1.35V = 1.375V etc.

    On some boards the CPU NB Voltage control is merely switchable between locked and manual, but as the setting in the BIOS illustration has a "Normal" setting, I'm asuming there is some kind of numerical adjustment possible.

    As a rule of thumb, adjust any over voltage control first, in steps, then secondly if that is insufficient, adjust any VID setting one increment and then repeat with the entire range of voltage control or the equiv. next step up.
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  2. #12
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    Default Re: How to set memory timings - 2 different latencies

    Wow, a whole bunch to do and learn! Parts are arriving next week so I'll have a little time. I'm reusing the existing case which is an older HP a1712n. It still has a usable HDD (currently loaded with Vista), an IDE DVD burner and a card reader.

    Sounds like what I should do is mount the new PSU, install the new CPU (AMD Athlon II X2 250 Regor) on the new GB MB, install the board and install the existing memory sticks. I would then connect the IDE DVD burner (I would need that to run Memtest86, correct?) and I assume I should connect the monitor to the on-board VGA and then run the tests as per Psycho101. If all goes well I can connect the HDD and install Windows 7.

    Does the above sequence sound correct? If not please advise correct sequence.

    Thanks for the replies and appreciate the help. I'm very new at this but I can read and I can follow directions


  3. #13
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    Default Re: How to set memory timings - 2 different latencies

    That sounds fine. Before installing anything in the case though I would build the system quickly on top of the mobo box. Install the CPU, use a small amount of TIM, mount the cooler, install two RAM modules, plug in the graphics card and connect the PSU to the 24 pin ATX and 4/8pin CPU Power. If the GPU needs a PCIE power cable, plug that in too then connect the monitor. Start the system by either jumping the power connector pins on the board with a screwdriver or by bringing the case over and wiring up the power button if the wire is long enough. If the board boots and you can get into the OS then you can go ahead and install into the case.
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  4. #14
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    Default Re: How to set memory timings - 2 different latencies

    Quote Originally Posted by Psycho101 View Post
    If the board boots and you can get into the OS then you can go ahead and install into the case.
    This sounds like I need to also connect the HDD before booting. As stated the existing HDD has Vista installed. I plan on formatting and partitioning this drive when I install W7. I guess what I'm asking is do I need to mount the HDD in order to run the first Memtest diagnostic?

    Planned setup to run Memtest before installing OS:
    1. MB with CPU and cooler installed
    2. DVD/CD burner
    3. Memory sticks
    4. Video card

    If memory passes test I would then:
    1. Install HDD
    2. Install Windows 7
    3. Install new memory sticks
    4. Run Memtest on new memory
    5. Complete installation of drivers, etc.

    Does this sequence sound correct?

  5. #15
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    Default Re: How to set memory timings - 2 different latencies

    Memtest86+ can be run from:
    floppy, http://www.memtest.org/download/4.10....10.floppy.zip
    usb, http://www.memtest.org/download/4.10....installer.zip
    cd/dvd, http://www.memtest.org/download/4.10...+-4.10.iso.zip

    My preference is to build and test a new system with the mobo beside the computer case with the mobo resting on a cardboard box or some books.
    Pressing [Ctrl} + F1 at the main bios screen will "unhide" some bios options in the MIT section and sometimes in other bios sections.
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  6. #16
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    Default Re: How to set memory timings - 2 different latencies

    If I access the above this looks like I can only up the voltage. Will it also allow me to reduce the voltage to 1.9V to match the 5-5-5-15 settings?
    The DDR2 Voltage setting defaults to 1.8 volts (Normal).
    You can manually raise it or lower it back to default setting.
    Q9650 @ 4.10GHz [9x456MHz]
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    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
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    SLI @ 16/4 works when running HyperSLI
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  7. #17
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    Default Re: How to set memory timings - 2 different latencies

    Quote Originally Posted by profJim View Post
    The DDR2 Voltage setting defaults to 1.8 volts (Normal).
    You can manually raise it or lower it back to default setting.
    Thanks for that clarification. Psycho101 had mentioned that also but with this exception:
    Unless the 4-4-4-12 RAM has a voltage designation in its SPD, manually setting 2.1V would be required if running the set solo
    . Any chance that is the case with this RAM?

  8. #18
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    Default Re: How to set memory timings - 2 different latencies

    The 2.1 volt spec is probably the maximum rated voltage, not the "normal" voltage at stock memory speeds.
    If you provide a cpu-z or Memset SPD screen-shot for each memory kit, we would know what the rated specs are at different speeds.

    **edit** Sometimes the manufacturer's website provides detailed memory specs for each memory kit.
    Last edited by profJim; 09-20-2010 at 04:35 AM. Reason: more info
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  9. #19
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    Default Re: How to set memory timings - 2 different latencies

    Got it now. After I get this build up and running (fingers crossed ) I will post CPU-Z screen shots. Actually, I might just put the 4-4-4-12 Corsair in my computer and use it there! It's faster then what I have now (Nanya 2GB 6-6-6-18) and just buy a 2x2GB kit for the rebuild. If so, I'll probably still go through the process as discussed here to get the experience and I'll post results.

    Thanks to all for their time and suggestions.

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