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Thread: Problem with 8GB ram on X48T-DQ6




  1. #11
    Join Date
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    Default Re: Problem with 8GB ram on X48T-DQ6

    Damn, still crashing :-S... It's rarer now though it seems..

  2. #12

    Default Re: Problem with 8GB ram on X48T-DQ6

    From your template I see that your auto spd is set to 3.20. This may be to aggressive for 8GB ddr3 so try to set multi = 3.33 or 4.00 fisrt B then D. Since your ram is not low latency there is low chance to work stable with tRD=7 with 8GB. Try tRD=8~9 and check stability. Then tRFC should go to 70~80 and tWTR and tRPT = 5. But there is something else - you're ok under load, so try to add CPU voltage and just in case disable C1E, TM2, CIA2 and EIST. I do have this board but with 2x2GB and it's pretty solid - not like the EP45T ones.
    GA-X48T-DQ6 [rev: 1.3], Bios F6e (replacement of GA-EP45T-UD3P [rev: 1.0])
    Q9550 (E0), Zalman CNPS9500 Cooler
    2x2GB Kingston HyperX [KHX13000D3LLK2/2G] 1.7V DDR3-1333 @7-7-7-20
    Gainward Bliss 8800GT, 2x1TB HDD Samsung SATA-2, CoolerMaster Real Power Pro 850W PSU

  3. #13
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    Default Re: Problem with 8GB ram on X48T-DQ6

    Actually, on a 333 FSB, 3.33 and 4.00 memory multi's are more agressive. With a 3.2 multi RAM speed is 1066, with your suggested ones it would be either 1108 or 1332, higher numbers being more aggressive. On any bus speed they're more aggressive.

    Low latency RAM isn't the main influence of tRead, FSB speed, memory strap and voltages (MCH, VDIMM MCH Ref), not actual RAM latency. No harm in setting it to 8 for trouble shooting, but 7 should be OK.
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  4. #14

    Default Re: Problem with 8GB ram on X48T-DQ6

    Quote Originally Posted by Psycho101 View Post
    Actually, on a 333 FSB, 3.33 and 4.00 memory multi's are more agressive. With a 3.2 multi RAM speed is 1066, with your suggested ones it would be either 1108 or 1332, higher numbers being more aggressive. On any bus speed they're more aggressive.
    Giving 3.33 and especially 4.00 will relax the advanced timings set to auto compared to 3.20. Maybe exactly because the mem frequency is going up.

    Quote Originally Posted by Psycho101 View Post
    Low latency RAM isn't the main influence of tRead, FSB speed, memory strap and voltages (MCH, VDIMM MCH Ref), not actual RAM latency. No harm in setting it to 8 for trouble shooting, but 7 should be OK.
    What are you saying here? The most important item here is tRD (depending on the MCH only). This is far more important than the main timings and next than the frequency.
    Low Latency ram gives you more options. For example to work with 7-7-7-20 @ 1066-1333MHz as opposed to 9-9-9-24 @ 1333-1600MHz.
    So if your ram runs only at 9-9-9-24 there is no point to decrease the frequency to 1066MHz cause you only loose performance. On the other hand using 7-7-7-20 @ 1066 most probably will give you better performance than 9-9-9-24 @ 1333 (depending on the ddr3 itself) My HyperX KHX13000AD3LLK2 certainly works much better on 7-7-7-20 @ 1248MHz with tRD=7 than 9-9-9-24 @ 1560MHz with tRD=8 on same GA-X48T-DQ6 board.
    GA-X48T-DQ6 [rev: 1.3], Bios F6e (replacement of GA-EP45T-UD3P [rev: 1.0])
    Q9550 (E0), Zalman CNPS9500 Cooler
    2x2GB Kingston HyperX [KHX13000D3LLK2/2G] 1.7V DDR3-1333 @7-7-7-20
    Gainward Bliss 8800GT, 2x1TB HDD Samsung SATA-2, CoolerMaster Real Power Pro 850W PSU

  5. #15
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    Default Re: Problem with 8GB ram on X48T-DQ6

    You made absolutely no mention of timings while talking about RAM multipliers in the first sentence of post number 12, you stated that a HIGHER multiplier would be less agressive. This is what I responded to in my post. Are you really saying that a good way to eliminate possible timing issues (and loosen subtimings) is to clock your RAM higher? If you want looser sub-timings, you increase those timings, you don't kick your RAM multiplier up a notch, while foolishly leaving the timings on auto.

    What are you saying here? The most important item here is tRD (depending on the MCH only). This is far more important than the main timings and next than the frequency.
    I didn't say it wasn't. You said :

    Since your ram is not low latency there is low chance to work stable with tRD=7 with 8GB.
    It doesn't matter one little bit if your RAM is set to 9-9-9-27 , 7-7-7-21 or even 999-999-999-2997 , it does not effect what tRead value you can use. It also doesn't matter if your RAM, for example DDR-800 modules is rated for 4-4-4-12 or 5-5-5-15, tRead is not hugely dependant on primary timings.

    The tRead value you can set and boot using is dependant mainly on the following, in order of importance:

    FSB speed
    MCH Strap
    MCH related voltages such as MCH Core, MCH Reference.
    VDIMM (little to no impact)

    On the other hand using 7-7-7-20 @ 1066 most probably will give you better performance than 9-9-9-24 @ 1333 (depending on the ddr3 itself)
    Uncertain. The only way to tell would be to run bandwidth and latency benchmarks. I get more performance from my RAM at DDR-1066, 5-5-5-15, than I do at DDR-800, 4-4-4-12. The difference is about 800MB/s read and 9ns less latency.

    I can't respond and comment on things you don't say. Your original post was confusing at best, and you only started to clarify it when you responded. I'm psycho, not psychic.
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  6. #16

    Default Re: Problem with 8GB ram on X48T-DQ6

    Hey Psycho,
    You completely lost it, don't ya?
    How fast can you say wacka-wacka-wacka..
    GA-X48T-DQ6 [rev: 1.3], Bios F6e (replacement of GA-EP45T-UD3P [rev: 1.0])
    Q9550 (E0), Zalman CNPS9500 Cooler
    2x2GB Kingston HyperX [KHX13000D3LLK2/2G] 1.7V DDR3-1333 @7-7-7-20
    Gainward Bliss 8800GT, 2x1TB HDD Samsung SATA-2, CoolerMaster Real Power Pro 850W PSU

  7. #17
    Join Date
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    Default Re: Problem with 8GB ram on X48T-DQ6

    Excuse me?

    Me clever..... Learn fast.

    Edit** BTW, it's Wocka Wocka Wocka. Fozzie Bear hates being miss-quoted.
    Last edited by Psycho101; 05-30-2009 at 01:37 AM. Reason: Edited due to respect for the OP, arguing in threads isn't approppriate.
    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

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