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Thread: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d




  1. #1

    Exclamation Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    Hello,

    I'm experiencing random restarts in Vista x64 when I play 3D games, such as Arma 2. Originally, I suspected the issue to be related to my mobo or my PSU.

    Before:

    - Asus P5Q
    - Ultra 1000W PSU

    After:

    - GA EP45-UD3R
    - Thermaltake 1200W PSU

    My system is still restarting randomly and often enters a reboot loop. Based on some similar posts on this forum and others, it seems that this may not be related to my mobo or PSU, but rather the BIOS settings for NB/MCH and RAM timings.

    The issue is that I'm unable to find the specific BIOS version and settings for my config. I'm hoping we can put these together in this thread as it will probably help out a lot of folks.

    I have 6GB of RAM in total:

    Slots 1 & 3: Corsair TWIN2X2048-C5D
    Slots 2 & 4: Corsair TWIN2X1024-C5D

    Both sets of RAM modules are rated at 5-5-5-15 2T at 2.1V.

    What do I need to do to get this puppy running stable, preferrably at 1066Mhz (but I can settle on 800Mhz).

    Thanks in advance!

  2. #2
    Chike is offline Senior Member
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    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    Are you sure both are PC2-8500?
    Could you look what is the SPD part number for slots 1 & 2 with CPU-Z?

  3. #3
    Join Date
    Mar 2009
    Location
    Romania :(
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    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    What's you MCH voltage? I was experiencing sort of the same problem with my 2x2GB of A-Data's some time ago (restarts during games, or rounding error during prime testing). After increasing MCH Core to 1.22V the system is rock stable.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  4. #4

    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    Quote Originally Posted by Chike View Post
    Are you sure both are PC2-8500?
    Could you look what is the SPD part number for slots 1 & 2 with CPU-Z?
    Slot 1/3: CM2X2048-8500C5D
    Slot 2/4: CM2X1024-8500C5D Q

    Thanks for your help so far!

  5. #5

    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    Quote Originally Posted by morph View Post
    What's you MCH voltage? I was experiencing sort of the same problem with my 2x2GB of A-Data's some time ago (restarts during games, or rounding error during prime testing). After increasing MCH Core to 1.22V the system is rock stable.
    MCH was set to 1.1V but I've upped it to 1.3V. Do you suppose this will fix the issue?

    I've also raised the DRAM voltage to 2.1V (although I had it here at one point when it was still crashing). Still running at 1066Mhz, though I've been reading that people suggest dropping to 800Mhz with 4 DIMMs loaded. Will be testing stability now.

  6. #6
    Join Date
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    Romania :(
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    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    If 1.3V is stable, than try decreasing voltage and test every time, until it gets unstable. When you get to that, raise voltage one notch and test again for stability.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  7. #7

    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    Quote Originally Posted by morph View Post
    If 1.3V is stable, than try decreasing voltage and test every time, until it gets unstable. When you get to that, raise voltage one notch and test again for stability.
    I just noticed that the restarts appear to be happening mostly when I'm AFK. When I come back to my office, the machine is usually in a reboot loop. Once I successfully reboot, which usually involves unplugging the machine for a few minutes, it says "Resuming Windows". Is it possible that some sort of power management issue is at play here?

  8. #8
    Join Date
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    Romania :(
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    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    I'm thinking that could be the S3? Someone correct me if I'm wrong, as I'm not using that feature, but I do know that Gigabyte boards are known to be having problems while resuming from S3 state.
    Just for testing, change in BIOS sleep setting from S3 to S1 and see if it happens again.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  9. #9

    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    Quote Originally Posted by morph View Post
    I'm thinking that could be the S3? Someone correct me if I'm wrong, as I'm not using that feature, but I do know that Gigabyte boards are known to be having problems while resuming from S3 state.
    Just for testing, change in BIOS sleep setting from S3 to S1 and see if it happens again.
    Before making any changes, I tried putting the system to sleep via Start > Sleep and it started the reboot loop.

    I then changed S3 to S1 as suggested and was able to successfully put the system to sleep via Start > Sleep, however Start > Shutdown still results in the reboot loop.

    I have also raised the MCH from 1.10V to 1.22V as I read in another thread that this helped out. I'll leave it at 1.22V for now.

    Any other suggestions? Is anyone running the same memory config as me or at least one of the two kits?

  10. #10
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Location
    PCB Island
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    25,940

    Default Re: Ga ep45-ud3r / corsair twin2x2048-c5d + twin2x1024-c5d

    What BIOS are you using? S3 issues have been resolved in P45, so you are either not using a newer BIOS or you are not stable (Hence this thread, sorry man)

    I take it you are using Vista right? You can disable sleep, which by default is enabled at 20 minutes. Just set that to never, and it will only sleep when you tell it to.

    I would not be mixing this ram, only asking for headaches such as this. Have you asked the ram guy if this memory is compatible enough to be ran in the configuration you are trying?

    If not please ask then report back, as they would know much better than we could guess >>
    Warranty Questions - The Corsair Support Forums

    If he says it should be fine to use let us know and we will get your settings that are failing and advise back some things to try out.

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