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Thread: Phenom 9950 Overclocking

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  1. #11
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    Quote Originally Posted by mongoled View Post
    Dude what were the ambient temps when u did this testing?

    Your temps are fantatstic with the heatsink you are using, rediculously low if compared to the temps I am seeing with my IFX. At 3300mhz, 1.475 volts while priming i hitting 64C, albeit this is closed case.

    But 20+ C diff in temperatures is huge.

    Funny thing, although the temps being reported by HWMonitor are high, the IFX is barely warm to the touch. Also am applying more pressure then the norm via the bracket, but still my temps are in the 60's on load.

    -- EDIT --

    Having trouble getting a stable overclock at high HTT frequencies. The usual culprits have been taken out of the equation, i.e. low NB/HT multis used.

    The ram I have runs fine at 1066mhz, so I have been using the 800mhz bootstrap @ 267mhz which puts the ram at 1066mhz. Is there a reason why this setting would not run stable at a higher HTT frequency?

    Saw that gotVolatge mentioned a while back, that when the HTT frequency increases that the PCI frequency increases, however I have it set to 100 in the bios, this should surely lock the PCI bus

    Will try at some time to drop the ram ratio just to see if that is the reason for the problems I am facing

    -- EDIT --

    Ok, nothing to do with ram ratio, something doesnt like high HTT
    Make shure all drivers are up to date,, I had problems hitting HIGH HTT/HT settings with bad drivers before for sound and or Lan and Video. Its a long shot but does happen.

    Try using the lowest CPUxmulti you can boot with HT/NB @ 2000..USING High HTT

    Maybe try 250x10 = 2500 with NB/HT @ 8xmulti = 2000,, Use a ram divider like 533/667 with stock timing. Slowly raise the HTT up till you cant go any more and lower the NB/HT one more step. Eventually youll reach your max.

    If Ram holds you back lower it down one more setting. Usually the 533/667 is low enuff to play with.

    Thats what i usually do if i know the Mobo can go over 250HTT.

    You May need to start as low as 230 x 10 or 11 and work your way up. Its a pain but its also Phenom

    Note:
    a Ram Ratio of 1/2 or 3/8ths seems to work best on my system to get High HTT/HT and NB. You Achieve this by selecting a CPUxmulti that changes your ram multi when kept on the Same Ram divider. Sorta like this,, a 10x and 667 may get 3/8ths,, while 10.5x and 800 may get you 1/2 ram divisor . Some Divisors run more stable with High HT/HTT. Mine likes the 1/2's alot.

    My personal best with Vista32bit and the ASUS79-T 9950@3.52ghz NB 2610 Ht 2610 Ram 1044 Im using 1/2 ram divider is set to 800mhz with 261x 13.5cpux

    Last edited by gOtVoltage; 12-15-2008 at 11:26 PM.
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