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Thread: EP45-UD3P BIOS F10b - Static tRead setting problem?




  1. #1
    Chucko is offline Member
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    Default EP45-UD3P BIOS F10b - Static tRead setting problem?

    I have been playing around with memory settings on my sig rig and I think I've discovered a BIOS setting problem with F10b. My current setup is stable when I leave Static tRead on Auto - but any time I set a numeric value that should work given my other settings, POST fails and I have to reset everything.

    Lsd and stasio, I know you'll want the full settings, but the relevant ones are primary memory timings set to 5-4-4-13, 445 MHz FSB, 2.00B multiplier, RAM at 1.800V, MCH core at 1.100V. Static tRead settings of 8, 9, or 10 cause a POST failure - 10 really should work here shouldn't it?

    Anyone else having problems with this?
    Intel Q9550 @ 3.842GHz * Gigabyte EP45-UD3P v1.1 * 8GB of OCZ Reaper HPC * nVidia GeForce GTX 660 * Mac OS X 10.9.2

  2. #2
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    Acebmxer is offline Gigabyte Elite
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    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    Quote Originally Posted by Chucko View Post
    Lsd and stasio, I know you'll want the full settings, but the relevant ones are primary memory timings set to 5-4-4-13, 445 MHz FSB, 2.00B multiplier, RAM at 1.800V, MCH core at 1.100V. Static tRead settings of 8, 9, or 10 cause a POST failure - 10 really should work here shouldn't it?

    Anyone else having problems with this?
    what ram are you using ddr2 800 or 1066? Also what is your ram rated for voltage might need up to 2.0-2.1 volts and any thing over 400 fsb for me i need 1.2 or better on the MCH. You are ting to run 8gb of ram at 890mhz, you may need up to 1.36 mch just keep upping it up a notch untill it boots but start at 1.2, 1.22 first.
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  3. #3
    Chike is offline Senior Member
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    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    Must be the BIOS.
    You undervolt the memory and probably the MCH Core, you change timings manually for no aparent reason, no link to your memory specs (there are 3 Reaper HPC 1066 kits,) and then it should work with tRD 10, shouldn't it?

    Select XMS profile if you have it, set all timings on auto, MCH Core to 1.2v (higher may be neededm) set Driving strength to 1066 and Static tRead of 9 or 8.
    Make memory benchmarks before and after you try these setting and tell me your current came out better - humor me.

    EDIT: see which strap is better for 445FSB, 2.00B or 2.00D.
    Last edited by Chike; 07-24-2009 at 10:56 PM.

  4. #4
    Chucko is offline Member
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    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    *sigh* Guess I have to prove I'm not a n00b. I may be making some bad ASSumptions but I'm not an idiot.

    The voltage settings are stable. I have been running Memtest86+ repeatedly for 6 to 12 hours at a time with no errors, likewise Linpack under Mac OS X for 8 hours at a time without failure. I would use more voltage if the mobo or the RAM required it - but it doesn't.

    RAM is 2 sets of OCZ2RPR10664GK - factory rated for 5-5-5-18 @ 1066MHz. I've been beating on these sticks for 6 months on this mobo and a Gigabyte EP45-DS3R, and I have a pretty good idea of what they can and can't do.

    Driving profile is set to OC-1200 both channels.

    Now if I have to crank up some voltage I will - but my experience with this board and other Gigabyte P45 boards suggests that something is wrong with the BIOS, not my settings.
    Intel Q9550 @ 3.842GHz * Gigabyte EP45-UD3P v1.1 * 8GB of OCZ Reaper HPC * nVidia GeForce GTX 660 * Mac OS X 10.9.2

  5. #5
    Chike is offline Senior Member
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    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    Never said you are a n00b nor i even suggested you're an idiot, assumptions are bad though, as a general rule.
    Memtest86+ is by no means a stress test, it meant to find defective memory, sometimes it will catch seetings problems; it does not put half the stress a multi tasking operating system can put on it.
    Where you say stable, it might be not with a different OS/stress tests.
    The BIOS is a beta so it might indeed have bugs, on the other side maybe they fixed something to make it more efficient that is now fails with streched to the edge settings.

    Anyway this is all not to the point, my challange was auto settings vs. your tweaks. IMO you'd do even better with 2.40B multiplier if possible. Do the benchmarks, prove me wrong, and stuff it in my face, otherwise, stay with your beliefes and I'll stick with mine.

  6. #6

    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    At 445FSB, 1:1 divider (2d/2b), and CL 5, she should be happy at 9/10 tRD, at least that is how it seem to work on most P4X chipsets. Will the system boot with higher tRD?
    QX9650 batch L739A761/ GA-EP45-UD3P/ Kingston KHX9200 4x1G

  7. #7
    Chucko is offline Member
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    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    @gampamu: Haven't had the time to run exhaustive experiments yet. Rest assured I will try this.
    Intel Q9550 @ 3.842GHz * Gigabyte EP45-UD3P v1.1 * 8GB of OCZ Reaper HPC * nVidia GeForce GTX 660 * Mac OS X 10.9.2

  8. #8
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    Default Re: EP45-UD3P BIOS F10b - Static tRead setting problem?

    You should download MemSet to see what Auto sets your tRead to. It's called Performance level in MemSet. Maybe your board does set it higher on Auto than what you tried. It's a quite complex setting and which setting works is dependant on other timings.

    Read this article if you haven't so already.


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