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Thread: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC




  1. #11
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Probably if you break something or mess it up so you could not put it back on, but I doubt it as it is not hurting functionality.

    If you are worried about your warranty though, you may want to leave it as I am not sure, or ask them directly.

  2. #12

    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    I don't currently have the time to take my UD3P out of my case and properly remove it and the blue plates. I'm a college student and am going to be starting a part time PHP programming job, plus I'm getting ready to take Network+ exam, so I don't have a lot of time right now. Next time I tear my rig down I'll remove the blue plates and put some good thermal paste on the P45 northbridge. I guess you could always put the blue plates back on before sending in for RMA... lol.

    I did go ahead and rig a fan on the northbridge from one of my old stock socket A heatsinks using zip ties (kept all them damn Socket A fans - I knew I'd use them someday ). I think the blue plates is what is holding my fan on... sorta.

    I'm glad that I got a UD3P that has the northbridge heatsink secured by Phillips screws. I've heard some of them used push pins, which don't mount securely and are sucky. My UD3P is a 1.6 - do all 1.6 have the northbridge screws or is it luck of the draw? My old P45-UD3L used push pins and whenever I mounted a similar fan on the northbridge it actually lifted off of the P45 chip! I used too much tension with the zip ties on the P45-UD3L and one of my good friends saw it when we were changing out the CPU - phew.

    Anyways, here are the photos -







    I know it's not the best method but I'm limited on time right now. I have noticed lower CPU temps at idle and my GTX 260 core temp has dropped at idle. I havn't put this system under full stress yet, but I'm anxious to see if there are temp differences.

    I'm going to start pushing this Q9550 further later this week. I'm really glad there is expert advice available here. I'll post back with results and more questions fo sho.

  3. #13
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Yeap, you could always glue it back on I doubt they would know or even look if you had to RMA. It is just glued on there.

    I agree, I really like the NB Screws on the nicer boards! They should make this default on all the boards, all around the mosfet/SB heatpipes and heatsinks too. X58 higher end boards also have this on the NB and SB.

    I am not sure which all boards have them, I know the higher end ones always do now, but not sure about this model in particular if revision matters or not.

    Love your LOL @ AMD! Those Socket A fans are nice, I have a few that move quite a bit of air and are quiet, also surprisingly still alive :)

    Hey, would that fit between the memory slot and heatsink, pointing to the rear? Just so air would move through the actual fins and not be mostly directed around by the plate? Just a though, that way or even the other way with it mounted sideways/vertical on the left side of the NB pointing to the memory.

    P45 does not have MCH temp readout, but you should have Motherboard, which is located in the PCB directly by the NB. If you remember your old temps you could compare them with your new temps. Everest Ultimate will show this temp.

    Good luck pushing things! Post back anytime

  4. #14
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    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Hi there Lsdmeasap,

    I've been googling a bit and found this relatively recent topic.

    I currently owns a GA-EP45-UD3P 1.6 too but only with FE bios, an Intel E8400 C0 and Mushkins 2x2gb PC8500 (Newegg.com - Mushkin Enhanced Blackline 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model 996599). Our systems are pretty close despiting the quad vs duo CPUs and that my Mushkins have increased voltages (2.0-2.1) and lower timings (5-5-5-15) over his OCZs.

    However, I've tried all Rosco's previous stable setups as well as your suggestions and I couldn't get anything stable at all. As a matter of fact I couldn't even get a stable Orthos stress using those "default" profiles on Gigabyte's QuickBoost.

    What would you recomend me?

    Kind regards.

    PS: I've just moved from a Foxconn G31MXP-K because I couldn't get stable over 3.6ghz, and back then I've used generic memory modules. I'm afraid that hardware isn't a problem now since I got the P45-UD3P and those Mushkin monsters.

  5. #15
    Chike is offline Senior Member
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    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    @ViPPeR_666
    It would be better if you create your own thread and post your failed settings.
    Forget QuickBoost it's no good.
    Please follow steps 1-4 in this post for some additional information that may help us assist you.

  6. #16
    Lsdmeasap's Avatar
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    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Yes Vipper, please make a thread so we can keep all your efforts and hardware separate.

    If you already have done this, I will get to your post shortly tonight.

  7. #17

    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Lsdmeasap,

    Whatsup ;-P

    I've been trying to get my Q9550 OC @ 448x8.5 rock stable by manually adjusting MCH & GTL Ref voltages. I'm confused on how to properly set your MCH Ref voltage though - even after reading

    this - http://forums.tweaktown.com/f69/how-...asytune-29746/

    & this - How to set up GTL Ref Values for 45nm & 65nm - XtremeSystems Forums


    If I have my VTT @ 1.22v, CPU Vcore @ 1.3375v, MCH Ref should be set to what?

    Do I need to set VTT to 1.20v, and then adjust MCH Ref from there?

  8. #18

    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Ok, I sorta understand it now.

    Here is what I have tried thus far -
    Set VTT to 1.20v, then set MCH Ref to .74. Right after doing that, I set VTT back to 1.22v, and it scaled MCH Ref to .752v (instead of .76v for stock VTT).

    The system booted at MCH Ref of .752v & VTT @ 1.22v but was not stable. Anything I tried lower with VTT @ 1.22 and no POST.

    So, right now I am running MCH Ref of .772v & VTT @ 1.22v - I believe .772v is the value that would be given by AUTO. I simply set VTT to 1.20v, then set MCH Ref to .76, right afterwards, I set VTT back to 1.22v, and it scaled MCH Ref to .772v.

    Am I doing this right?

  9. #19
    Chike is offline Senior Member
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    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    Yes you are right, but that is just the how to to thise who do not understand.
    It is very simple, there reference is derived/depand on VTT, as percent of it.
    Your were right also about 0.772:
    0.750 / 1.2 = 0.633 (63.3%)
    63.3 percent of 1.22v = 1.22 x 0.633 = 0.772.

  10. #20

    Default Re: Q9550 E0 + GA-EP45-UD3P 1.6 - Help me optimize my OC

    MCH Ref of .772v & VTT @ 1.22v has proven to be unstable.

    My question now is - Do I raise CPU Vcore & VTT, and keep MCH ref to the value I have it at? (.76v @ 1.2 vtt)

    Or do I try .80v @ 1.2 vtt and see how that scales with VTT @ 1.22 v ?

    I've read that it is suggested to use MCH Ref between .68v and .72v when VTT is at 1.20v - This range will not POST for me at all.

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