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Thread: OC different brands of RAM. EX38-DS4 - Is it possible?




  1. #11
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Quote Originally Posted by Lsdmeasap View Post
    MCH Voltage is always going to need +2 at least, most likely +0.3 for 8GB.

    See if you can boot using the 2.40B multi
    Ok I used that settings and I was able to boot and I ran Prim95 and at least I didn't get any error on the first test. I didn't run full 24 hour stability test but it seems ok so far except for the fact that when I first looged into windows after this setting change, it took a while to refresh/load the desktop icons.

    So my settings are as follows (red are the new settings):

    Gigabyte GA-EX38-DS4 BIOS
    CPU Clock Ratio : 9X
    Fine CPU Clock Ratio : 0.5
    CPU Frequency : 3.80GHz(400X9.5)
    CPU Host Clock Control : Enabled
    CPU Host Frequency : 401
    PCI EXP. Frequency : 100
    C.I.A.2 : Disabled
    Performance Enhance : Standard
    System Memory Multiplyer (SPD) : [2.40B]
    Memory Frequency : [962]
    DRAM Timing Selectable (SPD) : Manual
    CAS : 6
    DRAM RAS to CAS : 6
    DRAM RAS Precharge : 5
    Precharge delay (tRAS) : 24
    Advanced Timing Control
    ACT to ACT Delay (tRRD) : 5
    Rank Write to Read Delay : 8
    Write to Precharge Delay : 12
    Refresh to ACT Delay : 74
    Read to Precharge Delay : 5
    Static tRead Value : 9
    Static tRead Phase Adjust : 0 [Auto]
    Command Rate (CMD) : 2 [Auto]
    Clock Driving & Skew Control
    CPU/PCIEX Clock Driving Control : 800mV
    CPU Clock Skew Control : Normal
    (G)MCH Clock Skew Control : +0.3
    System Voltage Control : Normal
    DDR2 OverVoltage Control : [+0.35V] Current (2.16v according to CPUID Hardware monitor)
    PCI-E OverVoltage Control : Normal
    FSB OverVoltage Control : +0.1
    (G)MCH OverVoltage Control : Normal
    Loadline Calibration : Auto
    CPU Voltage Control : [1.3000v]
    Normal CPU Vcore : [1.22500v]

    Do you think that I got errors at 1066 due to incorrect voltage? Since 1066 isn't that far from 962.
    Can you advise what should I try next to, either raise it to 1066 or to tighten the values?



    P.S. - Core idle temp is at 50 deg and Core Voltage is 1.300v - is it ok?
    CPU: Intel E8500 @ 3.16GHz
    RAM: OCZ Titanium 2x2GB & G.Skill 2x2GB @ 800MHz
    MB: Gigabyte EX38-DS4 (BIOS F3)
    GPU: ATI Palit 4870 1GB Dual Edition
    PSU: ThermalTake 750W
    Cooling: Ximgatek Achilles 1284S
    Case: CoolerMaster 690

  2. #12
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    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    (G)MCH OverVoltage Control : Normal
    You still are not setting MCH Voltage as I suggested, you need +0.2-0.3 at least, set this and see how things go

  3. #13
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Quote Originally Posted by Lsdmeasap View Post
    You still are not setting MCH Voltage as I suggested, you need +0.2-0.3 at least, set this and see how things go
    I think I messed up the lines:

    (G)MCH Clock Skew Control : +0.3
    (G)MCH OverVoltage Control : Normal <- this is +0.3

    I did use your recommended setting.
    CPU: Intel E8500 @ 3.16GHz
    RAM: OCZ Titanium 2x2GB & G.Skill 2x2GB @ 800MHz
    MB: Gigabyte EX38-DS4 (BIOS F3)
    GPU: ATI Palit 4870 1GB Dual Edition
    PSU: ThermalTake 750W
    Cooling: Ximgatek Achilles 1284S
    Case: CoolerMaster 690

  4. #14
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    MCH Clock Skew should be 0 ps

    Well if +0.3 does not help, try 0.4, but I think it may just be this memory is not going to mix well for you.

  5. #15
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Quote Originally Posted by Lsdmeasap View Post
    MCH Clock Skew should be 0 ps

    Well if +0.3 does not help, try 0.4, but I think it may just be this memory is not going to mix well for you.
    I'll try that with multiplyer of 2.66D and see how it goes. Regardless, do you recommend to tighten some of the timings?
    CPU: Intel E8500 @ 3.16GHz
    RAM: OCZ Titanium 2x2GB & G.Skill 2x2GB @ 800MHz
    MB: Gigabyte EX38-DS4 (BIOS F3)
    GPU: ATI Palit 4870 1GB Dual Edition
    PSU: ThermalTake 750W
    Cooling: Ximgatek Achilles 1284S
    Case: CoolerMaster 690

  6. #16
    Lsdmeasap's Avatar
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    No, don't tighten anything until you get stable, then you can worry about getting things tightened down

  7. #17
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Quote Originally Posted by Lsdmeasap View Post
    No, don't tighten anything until you get stable, then you can worry about getting things tightened down
    Got it. I'll try this settings when I get back home. if it won't work, I'll revert back to the current setting and then run Prim95 for the weekend. I'll let you know the results.

    Thank you very much for your help so far :)

    Gil L.
    CPU: Intel E8500 @ 3.16GHz
    RAM: OCZ Titanium 2x2GB & G.Skill 2x2GB @ 800MHz
    MB: Gigabyte EX38-DS4 (BIOS F3)
    GPU: ATI Palit 4870 1GB Dual Edition
    PSU: ThermalTake 750W
    Cooling: Ximgatek Achilles 1284S
    Case: CoolerMaster 690

  8. #18
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Hi. I took me a while for the testing. The results are not good so I revert back to 800MHZ.
    I kept the CPU OC at 3.80GHz (default is 3.16GHz) and raised the voltage to 1.3000v - Is it ok?

    Other then that, Can you please guide me how to set the timings and voltages for 800MHz?
    The reason I'm asking, is that I have a strong belief that there's a problem with one of the new RAM I add (G.Skill). When my computer was new I used to have many errors regarding my display driver and I couldn't play games or use heavy graphic oriented app. I changed PSU, GPU, MB and still got the errors. I didn't replace the RAM since it passed all of the longest tests. But, one day I decided to remove one module and used only 2GB RAM and no more errors!! I then used the removed module on my computer and the errors came back (it was corsair DDR2 800MHz). So I switched them with my current OCZ titanium. I didn't see any errors since then.
    But now, when I play Splinter Cell, the game crashes back to windows with an error generated from my display driver. So, I just want to use good timing values and voltages for 8GB and see maybe my current settings causes these errors.
    Otherwise, I'll start testing each module to isolate the problem.

    I'm currently at:

    Gigabyte GA-EX38-DS4 BIOS
    CPU Clock Ratio : 9X
    Fine CPU Clock Ratio : 0.5
    CPU Frequency : 3.80GHz(400X9.5)
    CPU Host Clock Control : Enabled
    CPU Host Frequency : 400
    PCI EXP. Frequency : 100
    C.I.A.2 : Disabled
    Performance Enhance : Standard
    System Memory Multiplyer (SPD) : [2.00D]
    Memory Frequency : [800]
    DRAM Timing Selectable (SPD) : Manual
    CAS : 5
    DRAM RAS to CAS : 5
    DRAM RAS Precharge : 5
    Precharge delay (tRAS) : 18
    Advanced Timing Control
    ACT to ACT Delay (tRRD) : 3
    Rank Write to Read Delay : 3
    Write to Precharge Delay : 6
    Refresh to ACT Delay : 74
    Read to Precharge Delay : 3
    Static tRead Value : 7
    Static tRead Phase Adjust : 0 [Auto]
    Command Rate (CMD) : 2 [Auto]
    Clock Driving & Skew Control
    CPU/PCIEX Clock Driving Control : 800mV
    CPU Clock Skew Control : Normal
    (G)MCH Clock Skew Control : Normal
    System Voltage Control : Normal
    DDR2 OverVoltage Control : Normal (1.8xxv)
    PCI-E OverVoltage Control : Normal
    FSB OverVoltage Control : Normal
    (G)MCH OverVoltage Control : Normal
    Loadline Calibration : Auto
    CPU Voltage Control : [1.3000v]
    Normal CPU Vcore : [1.22500v]
    CPU: Intel E8500 @ 3.16GHz
    RAM: OCZ Titanium 2x2GB & G.Skill 2x2GB @ 800MHz
    MB: Gigabyte EX38-DS4 (BIOS F3)
    GPU: ATI Palit 4870 1GB Dual Edition
    PSU: ThermalTake 750W
    Cooling: Ximgatek Achilles 1284S
    Case: CoolerMaster 690

  9. #19
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Ya, 1.3 Vcore is fine, you might even need more.

    Before I can advise you on settings for your memory at 800Mhz can you please verify for me how much memory you are now using and which (Link or model please).

    Just want to be sure since you have a few sets and I am not sure

  10. #20
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    Default Re: OC different brands of RAM. EX38-DS4 - Is it possible?

    Quote Originally Posted by Lsdmeasap View Post
    Ya, 1.3 Vcore is fine, you might even need more.

    Before I can advise you on settings for your memory at 800Mhz can you please verify for me how much memory you are now using and which (Link or model please).

    Just want to be sure since you have a few sets and I am not sure
    Hi. Thanks for replying :)

    I have this model: OCZ DDR2 PC2-9200 Titanium 4GB Dual Channel Kit *EOL OCZ Technology DDR2 1150 PC2-9200 5 5 5 18 2.2v

    And this: G.Skill DDR2 1066 PC2-8500 5 5 5 15 2.0v
    CPU: Intel E8500 @ 3.16GHz
    RAM: OCZ Titanium 2x2GB & G.Skill 2x2GB @ 800MHz
    MB: Gigabyte EX38-DS4 (BIOS F3)
    GPU: ATI Palit 4870 1GB Dual Edition
    PSU: ThermalTake 750W
    Cooling: Ximgatek Achilles 1284S
    Case: CoolerMaster 690

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