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Thread: No choice but to run 1.5v DDR3 at 1.6v




  1. #11
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    i have a question chike ...
    u r using ep45tud3lr board how have u set the settings.. in bios

    for dram voltage is it in auto ,

    becoz i have to change it to normal from auto to set the 1.500v
    its giving 1.6v in auto and 1.5v in normal


    whats the diff between auto and normal setting in dram
    Last edited by pc2008; 07-25-2011 at 03:08 AM.

  2. #12
    Chike is offline Senior Member
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    My board is the DDR2 version, no "T" in it.
    Having a PC2-8500, which is a DDR-800 memory, overclocked to DDR-1066 I set 2.1v instead of 1.8v.
    If XMP is disabled and memory runs at default, with auto for DRAM Voltage the board sets 1.9v, +0.1v above spec.
    Test your system for stability, and if it's stable 1.5v/normal is fine, if not try to increase gradually. 1.575v is the max voltage according to the JEDEC standard for DDR3.

  3. #13
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    whats the diff between auto and normal setting in dram voltage

  4. #14
    Chike is offline Senior Member
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    Quote Originally Posted by pc2008 View Post
    whats the diff between auto and normal setting in dram voltage
    With auto the board sets "optimized" values, with auto it sets them according to specs.

  5. #15
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    should we select auto or normal in bios ???

    u said 1.575v is the max voltage according to the JEDEC standard for DDR3.

    before i was giving the options that 1.6v is normal so have this cause any prob in mobo, i found sytsem stable at 1.6v
    Last edited by pc2008; 07-25-2011 at 04:11 AM.

  6. #16
    Chike is offline Senior Member
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    1.8 will probably not cause any damage though I am not going to guarantee it

  7. #17
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    u said 1.8v will probably not cause any damage , 1.6v is my concern???
    Last edited by pc2008; 07-26-2011 at 12:26 PM.

  8. #18
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    Until recently 1.6v has been the stock ddr3 voltage.

    The 1.5v memory has been produced for on chip memory controllers like sandybridge etc to try and keep the voltage closer to the memory controller voltage.
    Even there tho general results seem to indicate ram voltages up to 1.65 v are ok for those.

    None of this applies to you on your board ,in the sense that the controller could be interfacing with ddr2 memory up to say 2.3 v.

    My ddr3 memory is supposed to work at its spec at 1.50v..the board(asrock) applies 1.59v on auto. I compromised on this and put in 1.55v,(because Im not overclocking the memory on it,atm)

    In essence 1.6v is like standard and certainly would be well within limits for a p45 board.Check your ddr3 memory profiles using aida,cpu-z,sisoft sandra etc.Voltages above say 1.69v would be up to you if you are trying to overclock the memory but if the board applies anything below that I wouldnt worry.
    Last edited by kick; 07-30-2011 at 06:29 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  9. #19
    Chike is offline Senior Member
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    Quote Originally Posted by pc2008 View Post
    u said 1.8v will probably not cause any damage , 1.6v is my concern???
    Sorry typo, I meant 1.6v will probably not cause any damage.

  10. #20
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    Default Re: No choice but to run 1.5v DDR3 at 1.6v

    is this happen on all gigabyte boards ..... or only GA-EP45T-UD3LR board

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