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Thread: EP45-DS5 with Corsair TWIN2X8500C5D




  1. #1
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    Default EP45-DS5 with Corsair TWIN2X8500C5D

    I've been trying to get a set of Corsair TWIN2X8500C5D's (2x2 GB) working all weekend. This forum has been of great help, as I'm pretty new to building computers.
    The board I have is a EP45-DS5 with latest F10a BIOS.
    No errors in memtest on any of them, but when I plug in them both, system freezes within 5-10 minutes no matter if I'm in memtest, bios, or windows.

    I've downclocked them to 800mhz as 1066 doesn't seem to work.
    Checking on Corsair's site I noticed that they recommend 6400's voltage at 1.9. So I changed that, naturally having 2.1 before.

    I also changed the timings to the 6400.
    5-5-5-12 instead of the 5-5-5-15 on the 8500.

    I'm now 35 minutes into a memtest showing no errors.
    I'll post tomorrow if it ran stable through the night.
    Last edited by neshiren; 08-25-2008 at 06:30 AM.

  2. #2
    Lsdmeasap's Avatar
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Well for starters you should not be using a Beta BIOS unless you HAVE TO. Having said that, if you do decide to go back to a stable release make sure it supports your CPU. And once you flash be sure to load optimized defaults and save/apply F10 and reboot. When you reboot go right back into the BIOS. DO NOT LOAD WINDOWS, especially if you have a RAID Setup because after you load optimized defaults you MUST make your disk changes again in the BIOS. Then also make any and all other changes again you want to.

    You have to go buy what is on the sticker of you ram for voltages. It is likely not 1.9 for sure for 1066 ram.

    For 2x2 you need to at least make a few changes, those would include trfc settings, MCH voltage added and Static tRead Value.

    If you post your full specs and what you are running your CPU at I will post you a full set of suggested timings.

    tRFC would need 52-62

    Static tRead Value should be 7-12

    MCH Core Voltage will need +0.1 - 0.3

    And of course, likely 2.1v on the ram

  3. #3
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Thanks for the reply, I will post full specs when I get back home.
    I thought it felt weird to go down to 1.9 but I wanted to try everything.
    I've got a q9550 at standard clocks, 333x8,5

    Didn't know that F10a was beta drivers, I'll flash to F9.

    And it turns out it didn't matter what I did, system froze after 1h 40 min in memtest with 1.9 voltage. At that time it completed 2 runs with 0 errors.
    To compare, with 2.1 voltage it hangs after around 5-10 mins, 2.0 voltage 20-30 mins.

  4. #4
    Lsdmeasap's Avatar
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Ya if a BIOS has a letter after the number it is a Beta.

    Well voltages and timings matter, so if you was using Auto for either who knows what was being used to point to wny 1.9 worked better then 2.1

    I am about to leave, but will of course be in tomorrow for sure. Here is a template for you to post me your settings that are failing >>>

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

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............:
    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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< Leave
    PCI Express Clock Drive.................: <<< Leave
    CPU Clock Skew (ps)....................: <<< Leave
    MCH Clock Skew (ps)...................: <<< Leave


    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..........................................

    Advanced Timing Control
    tRRD...........................................
    tWTR..........................................
    tWR............................................
    tRFC...........................................
    tRTP...........................................
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value.........................:7-10
    tRD Phase0 Adjustment...................:<<< 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.........................:7-10
    tRD Phase0 Adjustment...................:<<< 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….……….........................:
    CPU Termination…..... 1.200V*.......: <<< Leave
    CPU PLL…………………....1.500V*.......: <<< Leave
    CPU Referen.…………....0.755V*.......: <<< Leave
    CPU Reference2………,,0.800V*.......:<<< Leave

    MCH/ICH
    MCH Core…………….....1.100V...........: <<
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< 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]

  5. #5
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Just checked and my CPU is listed with BIOS F6. Every CPU is listed with that BIOS except a few exceptions using F10a.
    I'll flash to F6 instead of F9 then?

  6. #6
    Lsdmeasap's Avatar
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    No, that just means your CPU is not supported with any Under F6

    You can use Any of them F6 - F10 +Future ones. Anything PAST F6 is what that means

    So After looking I would say Try F9 first.

    But once you get me your settings I may see something right off the bat that is causing you issues. So you may not need to flash, but Beta's are just that and have issues often times.

    I'd say get me your settings so I can see if there is anything obvious and go from there. But if you want to just be sure not use a beta then try out F9

    DO NOT USE @BIOS to flash with, use a Floppy or USB and Qflash or Make a 1GB FAT32 Partition on the end of your Hard drive and put the BIOS file there.

    Note, you will need to extract the BIOS file from within the EXE that you download, the exe is made only to transfer files to a floppy or A drive.

    If you do not have a extractor, Here you can download Winrar 3.71 (Half way down page) Trial here and then just right click the BIOS exe file and choose "Extract Here". >>>
    WinRAR archiver, a powerful tool to process RAR and ZIP files

    Then place the BIOS_FILENAME_EXAMPLE.F9 file on the USB Stick or Floppy or FAT32 Partition. The .F9 Or whatever # you choose is the actual BIOS file and is the only one needed to flash with

  7. #7

    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Quote Originally Posted by Lsdmeasap View Post
    Ya if a BIOS has a letter after the number it is a Beta.
    (Unrelated to the topic:)
    * Is that important bit of info mentioned somewhere on the Gigabyte site? If it is, it is not in any obvious spot.

    * E8500 (both E0 and C0) are listed as "F6" in CPU support of GA-EP45-DQ6 rev1.0, yet the board shipped with "F5" was happy with that processor. Not that it really matters.

  8. #8
    Lsdmeasap's Avatar
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Yes it is listed on ALL the BIOS download pages in the info at the bottom. Not specifically as I stated it, but all BIOS's with a letter will say Beta BIOS in the description and then you see the Beta Info at the bottom

    And yes, many CPU's will work with lesser then stated BIOS Versions but you should NEVER try them unless you have a older CPU to use to flash in a supported one incase they do not work

  9. #9
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    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Thanks for the reply, tried these settings below just now, but computer froze 1 minute into memtest.



    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 8 x
    Fine CPU Clock Ratio.....................:.+0.5
    CPU Frequency ...........................: 2.83 Ghz (333x8.5)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Disabled]
    CPU Host Frequency (Mhz) ............: 333 Mhz
    PCI Express Frequency (Mhz) .........:at 100


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< Leave
    PCI Express Clock Drive.................: <<< Leave
    CPU Clock Skew (ps)....................: <<< Leave
    MCH Clock Skew (ps)...................: <<< Leave


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: Auto
    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................ 5
    tRCD ......................................... 5
    tRP'........................................... 5
    tRAS.......................................... 15

    Advanced Timing Control
    tRRD........................................... Auto
    tWTR.......................................... Auto
    tWR............................................ Auto
    tRFC........................................... 62
    tRTP........................................... Auto
    Command Rate (CMD) ....................:2

    Channel A
    Static tRead Value.........................:12
    tRD Phase0 Adjustment...................:<<< 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.........................:12
    tRD Phase0 Adjustment...................:<<< 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 @ 1.25
    CPU Termination…..... 1.200V*.......: <<< Leave
    CPU PLL…………………....1.500V*.......: <<< Leave
    CPU Referen.…………....0.755V*.......: <<< Leave
    CPU Reference2………,,0.800V*.......:<<< Leave

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.3
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave

    DRAM
    DRAM Voltage ……....1.800V............: 2.1
    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]


    Im gonna try mixing with the voltages some more
    Last edited by neshiren; 08-26-2008 at 02:03 AM.

  10. #10

    Default Re: EP45-DS5 with Corsair TWIN2X8500C5D

    Quote Originally Posted by Lsdmeasap View Post
    Yes it is listed on ALL the BIOS download pages in the info at the bottom. Not specifically as I stated it, but all BIOS's with a letter will say Beta BIOS in the description and then you see the Beta Info at the bottom
    I can see "What is BETA?" at the bottom, but no word "beta" in descriptions here.

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