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Thread: DRAM Voltage control has no effect on EP45-DS3R ??




  1. #1
    Chucko is offline Member
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    Default SOLVED! DRAM Voltage control has no effect on EP45-DS3R ??

    I was surprised to discover that changing the DRAM Voltage Control in the M.I.T page of the BIOS apparently does not change the actual voltage - the sensor always reads as 1.792V whether in the PC Health Status page of the BIOS or the lm_sensors module under Fedora 10 Linux.

    Mobo is a GA-EP45-DS3R v1.0, BIOS version F10. CPU is a Q6600 at 3.000 GHz (333 MHz x 9), 4x 2GB OCZ Reaper HPC 1066 DDR2. Full BIOS settings upon request (and I'm sure Lsd will request!)
    Last edited by Chucko; 03-06-2009 at 11:58 AM. Reason: solved problem, changed title

  2. #2
    kick's Avatar
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    Id be suprised if your memory was running at a voltage that low,still i suppose it might.
    Maybe you are using the "dynamic energy saving" (if the board has it) thing and its cutting down the voltage to the lowest the memory will run at?.
    Mine certainly changes, try a utility like speedfan while the pc is running see what it reads.
    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

  3. #3
    Chucko is offline Member
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    I forgot to mention the RAM is currently running at 800MHz.

    I don't run Windows so I don't have access to speedfan.

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    Does your system use anything to cut power use? Do you have EIST and C1E enabled in the BIOS?

    That is odd for sure, did you flash to F10 or did you get the board that way? Did you load and apply optimized defaults after the flash or when you built the machine?

    Yeap, you know it. Can you give us your full settings and a link to your ram or Model #

    Thanks, Very odd for sure I say!

    Hey, Does Everest run on that system, or wine so you could run windows apps?

    This is Just a template I use to ask people their settings, pay no attention to the numbers in it, replace with yours

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: Mhz
    PCI Express Frequency (Mhz) .........:Set to 100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<< 
    MCH Clock Skew (ps)...................: <<< 
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 
    Memory Frequency (Mhz) ..............: 
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................
    tRCD .........................................
    tRP'...........................................
    tRAS..........................................
    
    Set all Suggested below to highest Values first.  Then later you can lower, one at a time, testing as you go
    
    Advanced Timing Control
    tRRD...........................................
    tWTR..........................................
    tWR............................................
    tRFC...........................................
    tRTP...........................................
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................
    
    Channel A
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
    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  ps
    Dimm2 Clock Skew Control...............:Auto  ps
    
    Channel B
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
    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  ps
    Dimm2 Clock Skew Control...............:Auto  ps
    
    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:Auto if not overclocking, if you are overclocking please do find and set your own voltages
    
    CPU Termination…..... 1.200V*.......: << If overclocking Please set to stock, Auto overvolts this way to much.  Optimal range for overclock would be 1.2-1.5 depending on Vcore, try to keep at least .1 under vcore.  Auto is fine if not overclocking
    
    CPU PLL…………………....1.500V*.......: << If overclocking Please set to stock, Auto overvolts this way to much.  Optimal range for overclock would be 1.5-1.65.  Auto is fine if not overclocking
    
    CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly 
    
    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly 
    
    MCH/ICH
    MCH Core…………….....1.100V...........: << 
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.500V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave
    
    DRAM
    DRAM Voltage ……....1.800V............: 
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave
    
    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

  5. #5
    Chucko is offline Member
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    The board came with F10 - I haven't had to flash it yet. I'm running a Q6600 at 333x9 at stock VID of 1.275V with EIST and C1E enabled. 2 4GB kits of OCZ Reaper HPC 1066MHz DDR2. I haven't been successful yet getting the RAM to run at 1066, that's why I'm "underclocking" and trying to undervolt it. I haven't tried optimized BIOS defaults yet.

    I haven't tried wine yet but I'm sure it will run. Whether it supports any of the usual Windows OC tools is another question.

    More details will have to wait, I'm traveling this weekend due to a death in the family. :(

  6. #6

    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    Hi Chucko,
    I've had exactly same issue with GA-EP45T-UD3P (DDR3). All previous BIOSes used to ignore my DDR voltage setting. Only the latest BIOS (F6 for my board) solved the problem.
    Try to reflash and see can you fix it with with CIA2, EIST and C1E disabled.

  7. #7
    Chucko is offline Member
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    I had a couple hours and figured this out.

    I installed BIOS F11a, but it didn't change the behavior. If I reset to optimized defaults, I could tweak the DRAM Voltage and it would take effect. But if I set my preferred settings from there, I would lose it.

    So I reset to optimized defaults again, and went through the BIOS settings one page at a time until I found it.

    Turning on the Green LAN option disables changing the DRAM Voltage!!

    This is repeatable - it is just this one setting that does it!

    I think I need to file a bug report with Gigabyte.

  8. #8
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    I can file this report to Gigabyte as can you here if you would like >>
    http://www.gigabyte.com.tw/Support/ServiceCenter.aspx

    I will pass it along myself though for sure, I just posted the above incase you wanted to as well.

    So, can you please sum up all the BIOS's you know this for sure to be a issue in? Or is it just in the last two you tried?

    I will be sending out a email Sunday night, so if you want to test a few back you have time. If not, just let me know for sure which you know the issues are in and I will pass it along

  9. #9
    Chucko is offline Member
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    This is definitely true and repeatable in F11a. I'm away from home for a long weekend (family emergency), so I won't be in a position to test this on F10 again until Tuesday.

  10. #10
    Lsdmeasap's Avatar
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    Default Re: DRAM Voltage control has no effect on EP45-DS3R ??

    OK, well since it is for sure in F11a unless they are notified it will likely continue thru to F11 final so I will let them know tomorrow

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