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Thread: Need help to find a stable overclock for FX-8150

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    Question Need help to find a stable overclock for FX-8150

    Hi OC's,

    I have always wished for an performance desktop-pc for gaming and now after several laptops I managed to get one - yey!

    I focused in the autumn to get good quality products that are easy to use and usable for OC. Since this is my first build ever I looked through bunches of videos, guides and threads the last couple of months. In my daily life is I'm an engineer so tech in general and abstract thinking are not strange to me...

    Well here we go.. I have the Asus Sabertooth 990FX card and the FX8150 cooled by a H80 from Corsair - pretty standard. Me memory is Corsair vengeance. 2 x 4GB CL7:7-8-8-24. I first went with the CPU to 4.0 GHz (200 MHz with multi 20) @ 1.48v. The memory was manually set at 1600 MHz and CPU/NB @ 1.35v. The VRM settings was set to MAX power including disabled AMP. This should to me be a first safe step ( still saying I have no experience what so ever!) but didn't worked for me. After boot in MS Win8 I checked the settings and started Prime95 in small FFT mode - the comp freeze within sec.

    I have looked through [Advice] Recieving poor results with FX-8150 Overclocking but didn't helped me and in stock/auto settings the prime95 worked fine for 8+ hours at temp < 36 deg C.

    What am I missing to get a working stable OC?

    Some other questions that have arose:
    1) What is max temps for MB, RAM and CPU? 70 deg C?
    2) CPU power duty control - what is this? T probe thermal or C probe current? huh?
    3) Should CPU/NB and Memory freq be on auto or how should this be handled?

    Thanks,
    R
    Last edited by Flasken; 09-01-2013 at 16:58. Reason: more questions...

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    Default Re: Need help to find a stable overclock for FX-8150

    I'm not an AMD guy but from what I cant tell you must've really done something wrong (no offense) because the FX8150 should do 4.2GHz out of the box, try putting it back to stock everything and see if you can get it anywhere by only changing the CPU multiplier, again just a thought as I'm not very knowledgeable on the AMD stuff (Intel is better anyway :P jkjk)

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    Default Re: Need help to find a stable overclock for FX-8150

    I'm at work now but will respond in detail later. Make sure you disable turbo core and all the power saving features. The voltages you listed above should be good for at least 4.6GHz (and probably more). Don't let any of the cores go over 61 degrees C. Socket temp doesn't matter. Use a program called core temps to monitor temps while oc'ing.
    2nd Rig: AMD FX-8120; Cooler Master Glacer 240L; Gigabyte 990FXA-UD3; 16GB G.Skill Ripjaws X Series 1600MHz; 2 x PowerColor HD 7870 Myst. Ed. (Tahiti LE); Fractal Design Arc XL; SeaSonic X Series 850W
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    Unhappy Re: Need help to find a stable overclock for FX-8150

    Hi,

    Thanks for the replies.

    I tried to load stock settings again and only fiddle with multiplier but didn't work...

    I have uploaded pics of my bios settings so you guys can see what I have been doing.
    Regarding RAM - I have only selected 1600 MHz since the MOBO by default chose 1333... Since it picked up the wrong speed on the ram the timings are also off. CL9-something and my RAM are born to be CL7 (see my profile).

    http://flasken.dk/misc/bios1.jpg
    http://flasken.dk/misc/bios2.jpg
    http://flasken.dk/misc/bios3.jpg
    http://flasken.dk/misc/bios4.jpg


    Thanks,
    R

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    Default Re: Need help to find a stable overclock for FX-8150

    As to RAM, you always have to manually set it on an AMD board. Mine have always defaulted to 1333MHz. Your other setting look correct except you don't need all digi + vrm on extreme. Back them off a touch and you are using way to much cpu voltage. I was able to run 4.4GHz stable on my 8120 with 1.4 volts vcore and 1.3 volts cpu/nb. Sometimes too much voltage not only creates too much heat but also leads to instability. Set your multiplier so your system is running at 4.2GHz and slowly up the voltage until it's stable. When you run prime make sure you don't have other programs running in the background. Overclocking takes patience and each chip is a little different.

    One last question, do you have the latest bios installed? If not, flash the bios and start over from the beginning.

    Last, you may find some helpful info in this thread. My FX Build
    2nd Rig: AMD FX-8120; Cooler Master Glacer 240L; Gigabyte 990FXA-UD3; 16GB G.Skill Ripjaws X Series 1600MHz; 2 x PowerColor HD 7870 Myst. Ed. (Tahiti LE); Fractal Design Arc XL; SeaSonic X Series 850W
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    Exclamation Re: Need help to find a stable overclock for FX-8150

    Hi,

    Thanks for quick reply. I have the last couple of hours tried to make it work. but didn't succeed ...
    I uses version 1604 which I believe is the newest??? I can't use R2 bios or?

    I have now squeezed down the power settings one tick and the Vcore is 1.4v and CPU/NB 1.3v. RAM still set at 1600 MHz and timings right. The FSB is set to 200 MHz and multiplier is 18x (3.6 like the rating says). When I then boot up the bios now changes the settings to FSB speed 216 MHz and still 18x. The RAM speed is lowered to 14xx MHz and things are mess'ed up!

    http://flasken.dk/misc/pscreen.jpg

    What is going on?

    /R

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    Default Re: Need help to find a stable overclock for FX-8150

    Hey Flasken, welcome to PureOC Forums ñ_ñ

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    Default Re: Need help to find a stable overclock for FX-8150

    I still don't have a clue.. - anyone?

    I have set the timings on RAM on auto all the way so that shouldn't interfere... The problem is that the FSB changes from 200 til 216ish (and the rest seems to be set to 'safe'-mode)

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    Default Re: Need help to find a stable overclock for FX-8150

    Hi Flasken,
    I would set your CPU voltage to 1.35v CPU/NB to 1.25v for a 4.2GHz clock, Vcore can be auto or keep it at 1.4v. Disable CPU spread spectrum so you can do more with the FSB. I'm using the same board, chip and ram config which for last week i was trialing at 263x16 for a 4.2GHz which clocked the ram up to 17xxMHz @1.55v which showed a 5-10% performance increase in MaxxMem2 with still stock timimgs at 9-9-9-24 and stable to leave in Prime95, i haven't had a chance yet to start scaling up the multiplier but it will go higher.

    If your not happy with a low/high ram frequency as a result of changing your FSB then use the bios to select a ram frequency that is closest to what your prefer.
    Double check the bios to make sure anythings that "auto" OC's any part of your system is set to manual or disabled and set your DIGI+ VRM back to standard for now.

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    Default Re: Need help to find a stable overclock for FX-8150

    Quote Originally Posted by Beza View Post
    Hi Flasken,
    I would set your CPU voltage to 1.35v CPU/NB to 1.25v for a 4.2GHz clock, Vcore can be auto or keep it at 1.4v. Disable CPU spread spectrum so you can do more with the FSB. I'm using the same board, chip and ram config which for last week i was trialing at 263x16 for a 4.2GHz which clocked the ram up to 17xxMHz @1.55v which showed a 5-10% performance increase in MaxxMem2 with still stock timimgs at 9-9-9-24 and stable to leave in Prime95, i haven't had a chance yet to start scaling up the multiplier but it will go higher.

    If your not happy with a low/high ram frequency as a result of changing your FSB then use the bios to select a ram frequency that is closest to what your prefer.
    Double check the bios to make sure anythings that "auto" OC's any part of your system is set to manual or disabled and set your DIGI+ VRM back to standard for now.
    I did these settings for my fx 8120, when I had the h80i I could go to 4.4 prime stable, and good temps, with the mugen hardware edition, with corsair sp fans in push-pull I can only go to 4.0 any higher clock and my package temp goes to high

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