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Thread: UD3LR 8gb memory crash




  1. #41
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    Default Re: UD3LR 8gb memory crash

    static tRead 6

    Memory read is 7755 MB/s +~200
    Write is 7089 MB/s +5
    Copy is 7448 MB/s +~70
    Latency is 65.2 ns -3 seconds

    yes i was running things when i ran the pi thing here is 1m without running things
    16.5 seconds
    but core speed was at 1999 for a few seconds in cpu-z then like at loop 5 it moved to 9x multiplier and 3000.
    btw im using hyperPI 0.99b

    times seem to range from 16.5 to 20 changing the priority from normal to realtime
    Last edited by milkman6453; 07-27-2009 at 03:04 AM.
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  2. #42
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    Quote Originally Posted by milkman6453 View Post
    static tRead 6

    Memory read is 7755 MB/s +~200
    Write is 7089 MB/s +5
    Copy is 7448 MB/s +~70
    Latency is 65.2 ns -3 seconds

    yes i was running things when i ran the pi thing here is 1m without running things
    16.5 seconds
    Those results look right, maybe if you try what Psycho101 said and manage to get CAS 6 you'd get some more 200MN/s read.

    Quote Originally Posted by milkman6453
    but core speed was at 1999 for a few seconds in cpu-z then like at loop 5 it moved to 9x multiplier and 3000.
    btw im using hyperPI 0.99b

    times seem to range from 16.5 to 20 changing the priority from normal to realtime
    Looks like same results for 3GHz 333FSB but use the super_pi_mod-1.5 that comes with it directly, it seems to slow it down.
    The CPU will only go up 3000MHz for the period it is undr load, when it is idle it will drop to x6 multiplier 2000MHz. That's the EIST (Enahanced Intel Speed Step technolofy) causing it to reduce power consumption and reduce heat.
    It's perferctly normal, just wanted to make sure you on x9 multiplier.
    Last edited by Chike; 07-27-2009 at 03:49 AM.

  3. #43
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    Default Re: UD3LR 8gb memory crash

    CAS 6 is unstable even with lower sub settings i tried 6-6-6-6-17 and 6-7-7-7-17
    sub settings were set to physco request i got a BSOD each time page_fault_in_non_paged_area or similar.

    I kept the sub settings that physco said but im getting lower benches in everest, could we tweak those now, or is there something else to try for a lower CAS?

    also using superPI_1.5 i get about 15.66 seconds
    GA-EP45T-UD3LR Rev#: 1.0 - F7
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  4. #44
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    Default Re: UD3LR 8gb memory crash

    If using CAS 7, they can definitely be tweaked. Try lowering each one in turn until you regain the performance that XMP gave, then go a little lower to see what happens.

    To give an example of how I use SuperPi, I've just done two tests. The first shot is of tSuperPi on a 1M run with XMP enabled, everything else at stock and auto. The second is with a manually selected divider, main and subtimings and with a tRead of 4 set (to match the XMP run). Sorry about two posts for this but it's forum restrictions.
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  5. #45
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    Default Re: UD3LR 8gb memory crash

    Second pic, XMP disabled, manual timings. Note I executed SuperPI three times for each lot of settings, and chose the highest result given. Note they are both as said, taken at stock 2.8GHz. Sorry for the lack of CPU-Z in the pic, I forgot to open it.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  6. #46
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    With highset being the worse, am I understanding correctly?
    It's a pitty you haven't done it with 333FSB @ 3GHz, we would have a ground for comparison.
    BTW one good reason I can think of for safety margin is fall in power voltage as result of lightening e.g., it will only cause a small drop in VDIMM and MCH Core, but may be enough to cause memory data corruption with lower tRFC.

  7. #47
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    Default Re: UD3LR 8gb memory crash

    is memory data corruption temporary or what, theres a storm here now lol

    also tomorrow im getting a zalman fan could i ask for help with ocing the cpu in the same thread here?
    Last edited by milkman6453; 07-27-2009 at 05:20 AM.
    GA-EP45T-UD3LR Rev#: 1.0 - F7
    Intel Q9650 3.0GHz 12MB L2 Cache LGA 775
    Zalman 9700NT + 2 Synthe case fans
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 - http://www.gskill.com/products.php?index=95 running @ 9-9-9-9-24
    EVGA 512-P3-N976-AR GeForce 9800 GT 512MB 256-bit GDDR3
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  8. #48
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    Default Re: UD3LR 8gb memory crash

    Yes, the lower the time the better.

    I used stock to make it a fair test. As you have DDR3, my results wouldn't be directly comparable to yours as I'm running DDR2.

    There wouldn't be any significant VDIMM drop that would cause instability as the board regulates this extremely well. In the event of a power surge or lightning strike big enough to effect those voltages it's likely that the PC would crash regardless of settings.

    RAM data corruption is temporary. It CAN however result in corrupt data being written to the hard drive, which can cause data loss. This is why backing up important files is a must before you start overclocking, followed by a thorough stress test after to verify stability.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  9. #49
    Chike is offline Senior Member
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    Default Re: UD3LR 8gb memory crash

    Quote Originally Posted by milkman6453 View Post
    is memory data corruption temporary or what, theres a storm here now lol
    Quote Originally Posted by Psycho101 View Post
    RAM data corruption is temporary. It CAN however result in corrupt data being written to the hard drive, which can cause data loss. This is why backing up important files is a must before you start overclocking, followed by a thorough stress test after to verify stability.
    Yeah, dosn't mean the RAM is fried, and that's one reason Windows shuts into the BSOD or restarts if it's diabled when detecting possible memory corruption, to prevent such possible corruption on the disk.
    Last edited by Chike; 07-27-2009 at 11:34 PM.

  10. #50
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    Default Re: UD3LR 8gb memory crash

    Ha that was fun i got my zalman 9700nt in place, also one synthe fan, the screws that came with them dont really work lol. So im going to wait to get some foam tape to secure them in.

    So i guess im ready to do some overclocking where do i start?
    GA-EP45T-UD3LR Rev#: 1.0 - F7
    Intel Q9650 3.0GHz 12MB L2 Cache LGA 775
    Zalman 9700NT + 2 Synthe case fans
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 - http://www.gskill.com/products.php?index=95 running @ 9-9-9-9-24
    EVGA 512-P3-N976-AR GeForce 9800 GT 512MB 256-bit GDDR3
    OCZ ModXStream Pro OCZ500MXSP 500W ATX12V V2.2
    ViewSonic vx2265wm @1680x1050 120Hz

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