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Thread: GA-EP45-UD3P ram settings problem




  1. #1
    Join Date
    Dec 2008
    Posts
    4

    Default GA-EP45-UD3P ram settings problem

    I have just built this new computer (details below post) and I've been having difficulty getting the ram to perform properly. It is 2 x 2GB Corsair Dominator PC2-8500, (TWIN2X4096-8500C5DF) here is the link:
    http://www.corsair.com/_datasheets/T...6-8500C5DF.pdf

    This ram is rated to be run at 2.1 - 2.2 volts, at 1066 mhz with the timings 5-5-5-15. The problem is that the ram is unstable at this voltage and frequency. At 2.1V the ram will often not survive stress tests and at 2.2 it won't boot into windows. So I currently have it set to 2.0V. It also doesn't want to run above 1066mhz, I have to lower it to 1032.
    Since I've overclocked my cpu the divider gives me values above and below 1066, at 1076 the ram will fail stress tests. I have the timings manually set to 5-5-5-15 btw.

    I have my bios settings (version F7a), I'm hoping someone can point out where I could make adjustments to improve things.

    MB Intelligent Tweaker(M.I.T.)

    Robust Graphics Booster ...............: Auto

    CPU Clock Ratio ..........................:10 x

    Fine CPU Clock Ratio.....................:.0

    CPU Frequency ...........................:4.3GHz (430 x 10)





    Clock Chip Control

    Standard Clock Control

    CPU Host Clock Control..................: [Enabled]

    CPU Host Frequency (Mhz) ............:430 Mhz

    PCI Express Frequency (Mhz) .........: [Auto]



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





    Advanced Clock Control [Press Enter]

    CPU Clock Drive...........................: 700mV

    PCI Express Clock Drive.................: 700mV

    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 ..............: 2.40B

    Memory Frequency (Mhz) ..............: 1032

    DRAM Timing Selectable ................: [Manual]



    Standard Timing Control

    CAS Latency Time........................ 5

    tRCD ......................................... 5

    tRP'........................................... 5

    tRAS.......................................... 15



    Advanced Timing Control

    tRRD........................................... 4 [Auto]

    tWTR.......................................... 4 [Auto]

    tWR............................................ 8 [Auto]

    tRFC........................................... 68 [Auto]

    tRTP........................................... 4 [Auto]

    Command Rate (CMD) ....................: 0 [Auto]



    Driving Strength Profiles

    Driving Strength ............................



    Channel A

    Static tRead Value.........................: 8 [Auto]

    tRD Phase0 Adjustment...................: 0[Auto]

    tRD Phase1 Adjustment...................: 0 [Auto]

    tRD Phase2 Adjustment .................: 0 [Auto]

    tRD Phase3 Adjustment..................: 0 [Auto]

    Trd2rd(Different Rank)....................: 8 [Auto]

    Twr2wr(Different Rank)...................: 8 [Auto]

    Twr2rd(Different Rank)...................: 7 [Auto]

    Trd2wr(Same/Diff Rank)..................: 9 [Auto]

    Dimm1 Clock Skew Control...............:[Auto]

    Dimm2 Clock Skew Control...............:[Auto]



    Channel B

    Static tRead Value.........................: 8 [Auto]

    tRD Phase0 Adjustment...................: 1 [Auto]

    tRD Phase1 Adjustment...................: 0 [Auto]

    tRD Phase2 Adjustment .................: 0 [Auto]

    tRD Phase3 Adjustment..................: 0 [Auto]

    Trd2rd(Different Rank)....................: 8 [Auto]

    Twr2wr(Different Rank)...................: 8 [Auto]

    Twr2rd(Different Rank)...................: 7 [Auto]

    Trd2wr(Same/Diff Rank)..................: 9 [Auto]

    Dimm1 Clock Skew Control...............:[Auto]

    Dimm2 Clock Skew Control...............:[Auto]



    Motherboard Voltage Control

    Voltage Type.………... Manual

    CPU

    CPU Vcore ............1.21250V*.....: 1.3V

    CPU Termination…..... 1.200V*.......: [Auto]

    CPU PLL...............1.500V*.......: [Auto]



    CPU Reference.........0.760V*.......: [Auto]



    MCH/ICH

    MCH Core..........1.100V...........: [Auto]

    MCH Reference.....0.760V...........; [Auto]

    MCH/DRAM Ref.......0.900V...........: [Auto]

    ICH I/O...........1.500V............: [Auto]

    ICH Core..........1.100V............: [Auto]



    DRAM

    DRAM Voltage ......1.800V............: 2.000V

    DRAM Termination ..0.900V............: [Auto]

    Channel A Reference 0.900V............: [Auto]

    Channel B Reference 0.900V............: [Auto]
    I haven't tried running at a lower frequency and tightening up the timings, that could be a solution.

    Here are my computer specs:

    C2D E8600 @ 4.3 ghz
    Gigabyte GA-EP45-UD3P
    2 x 2GB Corsair Dominator PC2-8500
    HIS Radeon HD 4870X2
    Corsair TX650 watt psu
    Noctua NH-U12P CPU Cooler
    Hiper Osiris case (Silver)
    Samsung SM-2443BW 24" LCD 1920 x 1200

  2. Default Re: GA-EP45-UD3P ram settings problem

    First, lets try to walk before you run.
    Bump up voltages to the RAM to 2.2,
    MCH Core to about 1.2,
    CPU up a few notches in the bios (Sorry I dont have an exact recommended voltage).
    Then underclock the FSB,
    loosen (increase) RAM timings,

    MB Intelligent Tweaker
    Robust Graphics Booster............ Auto

    Clock Chip Control (standard)
    CPU Host Clock Control............ Enabled
    CPU Host Frequency (MHz)....... (Set manually)
    PCI Express Frequency (MHz).... 100 (Set manually)
    C.I.A.2.................................. Disabled

    Clock Chip Control (advanced)
    CPU Clock Drive......................... 800
    PCI Express Clock Drive............... 900
    CPU Clock Skew (ps)................... 0
    MCH Clock Skew (ps).................. 0

    DRAM Performance Control
    Performance Enhance.............. Standard
    Extreme Memory Profile............. Disabled
    (G)MCH Frequency Latch........... Auto
    System Memory Multiplier............ Auto
    DRAM Timing Selectable............. Manual

    Advanced Timing Control
    Driving Strength Profile............... Auto

    Motherboard Voltage Control
    Load Line Calibration................... Disabled
    CPU Vcore................................. bump up a few notches from auto
    CPU Termination......................... 1.2 (Set manually)
    CPU PLL.................................... 1.5 (Set manually)
    CPU Reference............................ Auto

    MCH/ICH 1.1
    MCH Core...................... Auto
    MCH Reference............... Auto
    MCH/DRAM Ref............... Auto
    ICH I/O......................... Auto
    ICH Core....................... Auto

    DRAM
    DRAM Voltage................... 2.2 (don't exceed your max V)
    DRAM Termination.............. Auto
    Channel A Reference........... Auto
    Channel B Reference........... Auto

    Advanced Settings
    Limit CPUID Max. to 3.............. Disabled
    No-Execute Memory Protect...... Disabled
    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
    Init Display First....................... PEG


    If it's still not stable then remove one stick of RAM.

    Don't even bother trying to boot Windows right now. Get Memtest86+ on a bootable CD and test your RAM. Memtest86+ - Advanced Memory Diagnostic Tool Let Memtest86+ make several passes, 3 is usually enough for me. When RAM is proven to be error free then you can boot into Windows and test the CPU with Prime95 or some other program.

    One of the more experienced members can probably give you more detail on the settings. Don't worry too much about the instability. These boards are capable of running your hardware at awesome speeds. It's just a matter of getting things set properly.
    Last edited by thebiggiantkevin; 12-23-2008 at 11:21 PM.
    Gigabyte GA-EP45-UD3R
    E5200 Wolfdale 2.5GHz
    Kingston HyperX 2GB (2 x 1GB)
    Corsair 400W PSU

  3. #3
    Join Date
    Dec 2008
    Posts
    4

    Default Re: GA-EP45-UD3P ram settings problem

    Thanks for the response.
    Still looking for more info, I have a feeling more memory settings need adjusting, like the mch voltage.

    Also, does the vcore effect the ram? I have it high enough for the cpu to be stable overclocked, but it is kind of low (1.3V). I just assume that the vcore and memory voltage are seperate.

    C2D E8600 @ 4.3 ghz
    Gigabyte GA-EP45-UD3P
    2 x 2GB Corsair Dominator PC2-8500
    HIS Radeon HD 4870X2
    Corsair TX650 watt psu
    Noctua NH-U12P CPU Cooler
    Hiper Osiris case (Silver)
    Samsung SM-2443BW 24" LCD 1920 x 1200

  4. #4
    Join Date
    Apr 2008
    Posts
    942

    Default Re: GA-EP45-UD3P ram settings problem

    I just assume that the vcore and memory voltage are seperate.
    Yes they are.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  5. Default Re: GA-EP45-UD3P ram settings problem

    We would be more than happy to help ya with settings. What settings are you using now? Do you get any errors with memtest86+?

    Maybe someone can provide some recommended RAM timings.
    Last edited by thebiggiantkevin; 12-25-2008 at 10:25 AM.
    Gigabyte GA-EP45-UD3R
    E5200 Wolfdale 2.5GHz
    Kingston HyperX 2GB (2 x 1GB)
    Corsair 400W PSU

  6. #6
    Join Date
    Nov 2008
    Posts
    67

    Default Re: GA-EP45-UD3P ram settings problem

    Please , have a look here : http://forums.tweaktown.com/f69/giga...results-29150/.

    This might help u.

  7. #7
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
    Join Date
    Jan 2008
    Location
    PCB Island
    Posts
    25,940

    Default Re: GA-EP45-UD3P ram settings problem

    Do you still need more help? If so, this is what I would suggest you try >>>

    I can tell by your settings here >>>
    CPU Clock Drive...........................: 700mV
    PCI Express Clock Drive.................: 700mV
    That you have loaded Fail Safe defaults, so please start over and load optimized defaults, set your ram voltage ONLY and then save/apply/reboot BACK to the BIOS and set your disk settings again, reboot BACK to the BIOS and check your disk settings again then move on to the rest of your settings. This way all optimized hidden settings that may apply will be set as opposed to fail safe ones

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................:10 x
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................:4.3GHz (430 x 10)
    
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............:430 Mhz
    PCI Express Frequency (Mhz) .........: [100] << Ouch, set to 100 for sure. 100-105 safe for sure.  Auto is not safe at all when overclocking
    
    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.).....: [Auto] << Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 2.40B << At that FSB you will find the D Strap much more stable with less MCH Voltage needed.  If 2.66D is to much for you then use 9 or 8 CPU mutli so you can use 2.00D
    
    Memory Frequency (Mhz) ..............: 1032
    
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................ 5
    tRCD ......................................... 5
    tRP'........................................... 5
    tRAS.......................................... 15/18
    
    Advanced Timing Control
    tRRD........................................... 3-4
    tWTR..........................................3-6
    tWR............................................ 4-8
    tRFC........................................... 52-62
    tRTP........................................... 3-5
    Command Rate (CMD) ....................: 2
    
    Driving Strength Profiles
    Driving Strength ............................1066
    
    Channel A
    
    Static tRead Value.........................: 8 [Auto] << Set 6/7-10 333/B MCH - 8/9-12 400/D MCH
    
    tRD Phase0 Adjustment...................: 0[Auto]
    tRD Phase1 Adjustment...................: 0 [Auto]
    tRD Phase2 Adjustment .................: 0 [Auto]
    tRD Phase3 Adjustment..................: 0 [Auto]
    Trd2rd(Different Rank)....................: 8 [Auto]
    Twr2wr(Different Rank)...................: 8 [Auto]
    Twr2rd(Different Rank)...................: 7 [Auto]
    Trd2wr(Same/Diff Rank)..................: 9 [Auto]
    Dimm1 Clock Skew Control...............:[Auto]
    Dimm2 Clock Skew Control...............:[Auto]
    
    Channel B
    
    Static tRead Value.........................: 8 [Auto] << Set 6/7-10 333/B MCH - 8/9-12 400/D MCH
    
    tRD Phase0 Adjustment...................: 1 [Auto]
    tRD Phase1 Adjustment...................: 0 [Auto]
    tRD Phase2 Adjustment .................: 0 [Auto]
    tRD Phase3 Adjustment..................: 0 [Auto]
    Trd2rd(Different Rank)....................: 8 [Auto]
    Twr2wr(Different Rank)...................: 8 [Auto]
    Twr2rd(Different Rank)...................: 7 [Auto]
    Trd2wr(Same/Diff Rank)..................: 9 [Auto]
    Dimm1 Clock Skew Control...............:[Auto]
    Dimm2 Clock Skew Control...............:[Auto]
    
    
    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore ............1.21250V*.....: 1.3V << More or less may be needed, all up to your chip and board's vdrop/vdroop.  Once you set your own Vtt and Pll below you will be much more stable as Auto WAY Overvolts things and Vtt in Auto at 4+ Ghz makes your CPU and MCH Ref voltages all out of wack
    
    CPU Termination…..... 1.200V*.......: [Auto] << Set manually (Auto here and Pll below is KILLING YOUR CPU With 1.85V)  Set 1.2-1.36
    CPU PLL...............1.500V*.......: [Auto] << Set 1.5-1.6
    CPU Reference.........0.760V*.......: [Auto]
    
    MCH/ICH
    MCH Core..........1.100V...........: [Auto] << 1.2-1.3 (To stay on the 333 strap you may need to set very high MCH and ram voltage, so you may need to use 1.3-1.35+ or switch to the D Strap)
    
    MCH Reference.....0.760V...........; [Auto]
    MCH/DRAM Ref.......0.900V...........: [Auto]
    ICH I/O...........1.500V............: [Auto] << 1.5-1.6
    ICH Core..........1.100V............: [Auto] << 1.1x-1.2
    
    DRAM
    DRAM Voltage ......1.800V............: 2.000V-2.1
    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] Enabled if you use Vmware/Virtual PC
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB
    Last edited by Lsdmeasap; 12-31-2008 at 06:06 PM.

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