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Thread: Cool, quiet, fast & sexy - long road to enlightment




  1. #21
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    With 1.2VTT using 0.74, 0.72 or 0.70 MCH ref is likely needed. Every system is different though so I'm not saying this is certainly the case. You may also want to consider going up to 1.32VTT. I know it's usually ideal to have VTT equal or slightly lower than Vcore but anything is worth trying. Who'd have thought 1.100V MCH Core would be stable? VTT could be the same. Try lower than 1.2VTT too and compare. Remember the "safe" range of up to 1.4VTT (1.45 absolute max IMO on a P45) and that VTT won't create any (noticable anyway) extra heat.

    Good luck!
    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)
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  2. #22
    Chike is offline Senior Member
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    Quote Originally Posted by Octopuss View Post
    I don't understand. If anything, it would be DDR-1006 :) DDR-900 would be for FSB 450. Right?
    Anyway, if 15-5-5-5 is 1066 timings, then if I run the memory at around 1000 with same timings, logically there should be plenty of reserve.

    Testing testing testing...
    Set both CPU and MCH ref voltages at 0.760@1.2 CPU term and going a bit up. Not much difference. Few more mins of stability in Prime95, then it freezes as usual. I wanna get stable 505 at least, damnit! Dumb computers!
    The timings stand for a period of time. T=memory clock/cycles, obviousely the slower is the clock the longer the time period is for a fixed cycles value, what took X time at 1066 takes > X time as DDR-900 with the same timings set.
    Your running 450FSB with memory multiplier of 2, that's 1:1 so you run as DDR-900, I don't care what the sticker on the module says.

  3. #23
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    Where are you getting that I am running at FSB 450? I posted a few times I have rock-stable 500 and 503.
    Psycho, thanks for tips!

  4. #24
    Chike is offline Senior Member
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    Quote Originally Posted by Octopuss View Post
    Where are you getting that I am running at FSB 450? I posted a few times I have rock-stable 500 and 503
    Oops sorry lol, must have read coray's post and thought it was yours. In this case timing are pretty close to what thay should be. Still may be worth trying lower performance level.

  5. #25
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    No problem, I thought it might be a simple mislook :)
    It definitely is worth a try though, after I try all the combinations of ref voltages - but still, the difference in memory frequency is really close to zero, so I think it can't make much difference. 1000 - rock stable with the settings I posted. 1010 unstable - not very likely! But give me your opinion on voltage. Official for my modules at 1066 is 2.1V. I am stable with timings and frequency specified earlier in the thread at 2.0V. Can adding a step or two to that give better stability even when we are talking about increments of 5MHz or so?


    The plan is:
    testing all combinations of VTT 1.2 to 1.32 with MCH ref 0.70,72,74@1.22VTT.

    If I can't get the bloody 505 stable, I will try the same with +1 in tRD or whatever the thing in advanced timings section is.

    If it fails too, I will *****slap the stupid PC and move onto further reading about networking, wasting no more time on this :D

  6. #26
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    You've done really well to get this far with the limit you have set for your Vcore. Even if 505 fails, I'd cut the PC some slack. Perhaps treat it to a bag of "chips"?
    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

  7. #27
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    You see, I got to the point where the actual performance gain doesn't matter, it is about human winning over a stupid machine, just from general principle :D

    Btw the idea of decreasing VTT below default is interesting.
    Also, CPU ref probably doesn't need to be touched, right?

    edit: after setting VDIMM back to 2.1V, Prime95 "fails normally" it seems. It actually gives me errors instead of freezing to hell, toggling Error reporting to bug me with crap. It might or might not be connected, who knows. Higher (default in fact :P) voltage doesn't generate any extra heat anyway, so at least I can be sure memory is out of question when it comes to instability.

    edit2: damn, another freeze!!!!
    Last edited by Octopuss; 07-23-2009 at 07:41 AM.

  8. #28
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    It's always worth trying. CPU ref for me was important to tune on my quad, but it makes no difference for me on my dual core.
    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. #29
    Join Date
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    Damn thing, the results are totally random! The freezes annoy me the most, because I can't tell what kind of problem it is. Grrrrrr.... Never had this happen before, not even with very unstable settings!

  10. #30
    Join Date
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    Default Re: Cool, quiet, fast & sexy - long road to enlightment

    How the hell can I BURN my finger on the NB heatsink when the MCH core voltage is set to default 1.1????? Damn. And having soundcard right next to this prolly doesn't help it much.

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