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Thread: GA-EP45C-DS3R 8GB (4x2GB) RAM




  1. #1
    Join Date
    Sep 2008
    Posts
    12

    Default GA-EP45C-DS3R 8GB (4x2GB) RAM

    I'm having problems getting all four of my sticks running. I can run any combination of two modules just fine, but once I add the third, my system won't post. I'm in the process of using memtest, but since all of the sticks work fine individually, I don't think that's the problem.

    Full System Specs:
    Gigabyte GA-EP45C-DS3R - Bios Ver: F4
    Intel Core 2 Quad Q9550
    2x mushkin XP ASCENT 4GB 996622
    ATI HIS Radeon 4870x2
    750W PC Power & Cooling PSU
    Windows Vista Home Premium (64-bit)

    BIOS Settings:

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


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: Disabled
    CPU Host Frequency (Mhz) ............: 333MHz
    PCI Express Frequency (Mhz) .........: 100
    C.I.A.2 .................................: Disabled


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 700w
    PCI Express Clock Drive.................: 700w
    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 ..............: Auto
    Memory Frequency (Mhz) ..............: 800
    DRAM Timing Selectable ................: Manual

    Standard Timing Control
    CAS Latency Time........................ 4
    tRCD ......................................... 4
    tRP'........................................... 4
    tRAS.......................................... 12

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

    Channel A
    Static tRead Value.........................: Auto
    tRD Phase0 Adjustment...................: Auto
    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
    Dimm2 Clock Skew Control...............: Auto

    Channel B
    Static tRead Value.........................: Auto
    Static tRead Value.........................: Auto
    tRD Phase0 Adjustment...................: Auto
    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
    Dimm2 Clock Skew Control...............: Auto

    Motherboard Voltage Control
    Voltage Type.………... Manual

    CPU
    CPU Vcore….……….........................: Auto
    CPU Termination…..... 1.200V*.......: Auto
    CPU PLL…………………....1.500V*.......: Auto
    CPU Reference.…………....0.755V*.......: Auto

    MCH/ICH
    MCH Core…………….....1.100V...........: Auto
    MCH Reference….…….0.800V...........: Auto
    MCH/DRAM Ref.…......0.900V...........: Auto
    ICH I/O……………….....1.550V............: Auto

    DRAM
    DRAM Voltage ……....1.800V............: Auto
    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]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Disabled]

  2. #2
    Join Date
    Apr 2008
    Posts
    942

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    I would start off by setting the main memory timings to 5-5-5-18, tRFC to 54 (or higher, say anywhere between 54-64) and then testing to see if the PC boots and/or passes memtest.

    If it boots but doesn't pass memtest without errors, try incrementing the DDR2 voltage by 0.1 volts and test. If it still errors, increment the DDR2 voltage by a further 0.1 volts (2.0v total) and test.

    Try the above for starters... tweaking can be done later..

    Plus, remember to keep "Performance Enhance" to Standard.
    Last edited by VorLonUK; 10-14-2008 at 07:39 AM.
    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.

  3. #3
    Join Date
    Sep 2008
    Location
    Canberra, Australia
    Posts
    206

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    also you'll need to up the MCH Core voltage to at least 1.25V for 8GB (up to even 1.35V maybe), you'll need to increase the Static tRead value to 7-12 (maybe even start at 14 and work down, testing with MemTest86+, of course)
    NZXT Lexa BlackLine Case with Red LEDs
    Corsair TX-750 Modular PSU
    Gigabyte EP45-DS3P (BIOS F7)
    Intel Core 2 Quad Q9300 @ 3.73GHz (downclocked for the summer )
    OCZ Vendetta 2 CPU Heatsink
    2x 2GB Kingston HyperX RAM PC2-6400 @ 996MHz (4-5-5-15)
    3x Seagate Barracuda 7200.11 500GB HDD in RAID5
    2x HIS Radeon HD 4850 @ 745/1090 in CrossFireX
    2x ThermalTake DuOrb GPU Heatsink
    D-Link Super G PCI WLAN Adapter
    Asus Lightscribe 20x SATA II DVD-DL Burner
    Creative X-Fi XtremeGamer Fatal1ty Pro
    2x 22" LG W2252TQ-PF Widescreen LCD Monitor (YAY!! Finally got the second one!!)

  4. #4
    Join Date
    Sep 2008
    Posts
    12

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    Thanks for the replies guys, but I'm still not getting past POST. I finished running Memtest for each stick individually and they all passed.

    It seems like I can only have RAM in one channel. I can run 4GB in Channel A, but if I do 2 in Channel A and 2 in Channel B, it doesn't boot. Any ideas?

  5. #5
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
    Join Date
    Jan 2008
    Location
    PCB Island
    Posts
    25,940

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    Here, start with these very loose values, then tweak your way down >>>

    I do think voltage was your issue more then anything, 1.8/Auto just isnt going to cut it. The sticks are rated to 2.1 (+0.3) but will run fine up to 1000 or so with only 2.0, but MCH will be needed as suggested above

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Fast
    CPU Clock Ratio ..........................: 8x
    Fine CPU Clock Ratio.....................: +0.5
    CPU Frequency ...........................: 2.83GHz (333x8.5)
    
    
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: Disabled
    CPU Host Frequency (Mhz) ............: 333MHz
    PCI Express Frequency (Mhz) .........: 100
    C.I.A.2 .................................: Disabled
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 700w << you set?  Just wondering
    PCI Express Clock Drive.................: 700w << you set?
    CPU Clock Skew (ps)....................: 0ps
    MCH Clock Skew (ps)...................: 50-150ps (may need 100-250 with 8GB)
    
    
    DRAM Performance Control
    Performance Enhance...................: Standard
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 333 << Set voltages, this and Memory Multi and then save/apply/reboot back to the BIOS and make the rest of the changes.  
    
    System Memory Multiplier ..............: 2.40B
    Memory Frequency (Mhz) ..............: 800
    DRAM Timing Selectable ................: Manual
    
    Standard Timing Control
    CAS Latency Time........................ 4
    tRCD ......................................... 4
    tRP'........................................... 4
    tRAS.......................................... 12
    
    These will be vary high/loose just to get your booted thru, set to all highest shown for first boot thru. 
    
    You can later lower and test as you lower each one by one.  Tweaked values will be in ()'s
    
    Advanced Timing Control
    tRRD........................................... (3-4) 3-8
    tWTR.......................................... (3-6) Set 12-14 first
    tWR............................................ (4-6) Set 14-16 first
    tRFC........................................... (52-70) Set 80
    tRTP........................................... (2-3) 3-7
    Command Rate (CMD) .................... 2
    
    Channel A
    Static tRead Value.........................: (5-7) Use 10-12
    tRD Phase0 Adjustment...................: Auto
    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
    Dimm2 Clock Skew Control...............: Auto
    
    Channel B
    Static tRead Value.........................: (5-7) Use 10-12
    Static tRead Value.........................: Auto
    tRD Phase0 Adjustment...................: Auto
    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
    Dimm2 Clock Skew Control...............: Auto
    
    Motherboard Voltage Control
    Voltage Type.………... Manual
    
    CPU
    CPU Vcore….……….........................: Auto
    CPU Termination…..... 1.200V*.......: Auto
    CPU PLL…………………....1.500V*.......: 1.5
    CPU Reference.…………....0.755V*.......: Auto
    
    MCH/ICH
    MCH Core…………….....1.100V...........:1.25-1.35 << Needed for stable 2x2 or 4x2 as you have
    
    MCH Reference….…….0.800V...........: Auto
    MCH/DRAM Ref.…......0.900V...........: Auto
    ICH I/O……………….....1.550V............: 1.55-1.6
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.0-2.1 << Set 2.0 for now, should work fine
    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]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Disabled]

  6. #6
    Join Date
    Sep 2008
    Posts
    12

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    I'm still getting continuous reboots, even using the loosest values. It seems to me like my motherboard doesn't like having ram in Channel 0 and Channel 1 at the same time... But I'm by no means an expert on these things.

  7. #7

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    first just go over every settings in the MIT and get them all to optimized defaults:
    " i went to every option and did F7(load optimized defaults) not just to the main screen of M.I.T , even when i enter any advanced settings or channel settings i pressed F7, then i reboot, then i manually change timings and everything was fine :S"
    this is a quotation from me how i fixed the reboot cycle :P
    so after u do that tweak the ram with LSD'S settings, u should be fine ^^

  8. #8
    Join Date
    Apr 2008
    Posts
    942

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    Did you buy all the modules at around the the same time?

    Plus have you tried:-

    1) 5-5-5-18 or 6-6-6-18
    2) tRFC = 56
    3) DDR2 @ 2.0volts
    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.

  9. #9
    Join Date
    Sep 2008
    Posts
    12

    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    Yeah... I bought them at the same time. I'm going to be needing my computer for school work tonight, so I don't have time to mess around with the BIOS.

    I don't know if you guys remember, but I was having a problem with my Corsair DDR3 RAM a few weeks ago... I had trouble getting both sticks running at the same time, but I could run them individually. I was looking through my manual and it turns out that the two DDR3 sockets are divided into separate channels, 0 and 1.

    Right now, I can have 2x2GB in either channel 0 or channel 1, but if I put a 2GB stick in channel 0 and one in channel 1, I'll get reboots. Maybe something's just wrong with my motherboard?

    Thanks for the help so far, guys.

  10. #10
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP45C-DS3R 8GB (4x2GB) RAM

    You are using the right slots right? I mean like (DDR2 Channels of course) Channel 0, slot one & Channel 1, slot 3 for dual channel

    If so, did you try Channel 0, slot 2 & Channel 1, slot 4

    Just trying to be sure, they must be in the same places in both slots, so 1+3 or 2+4 is what I meant above if that is unclear.

    And for 8GB it just is not going to be plug and play, which I know you know.

    And yes, please try 555-15/18

    Have you Fully Memtested each stick by itself to be sure you do not have a DOA Stick in the mix?

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