Athlon people and all overclockers pleas help.
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  1. #1
    Join Date
    Oct 1999
    Location
    Zagreb,Croatia
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    1,824

    Athlon people and all overclockers pleas help.

    I am very pised with my two Athlon CPUs.

    Well they work great, but I can`t overclock the way I would like to.

    Components:

    CPU 1 K7 Athlon Classic 500 with 650 core and 3,3nS L2, 0,25 micron

    CPU 2 K75 Athlon Classic 550 with 650 core and 3,6nS L2 0,18 micron.

    Mainboards MSI K7Pro (Irongate) and Epox EP-7KXA (VIA KX133).

    Both CPUs work 100% stabile @ default power 1,6V @ 700MHZ and both can run @ 1/2 L2 100% stabile, I have tested that for many times, and I have 0 problems.

    Both CPUs simply refuses to work @ enything higher then 700.

    My question is why? becouse they work @700 @ default 1,6V.

    I am able to overclock on my EPOX MB both CPUs up to 770 MHZ (110FSB) but thing is that my K75 (0.18CPU) needs extrimly high 1,75V to run @ only 770MHZ, is that maybe litle strange.

    I have modified cooling for both CPUs, no HTP, cooler is directly on CPU with 3 fans on every cooler, and L2 is resolder on both CPUs to 1/3.
    And I have good cooling for case

    I am bit frustrated becous I read how people overclock 650MHZ CPUs up to 800 and even higher, and I can`t get not even 750 with 0.18 micron CPU (K75).

    What am I doing wrong.

    Coolers are big, I have lots of fans, and even 0.18 micron CPU but no go, not higher then 700MHZ.

    @ 700 both CPUs run @ usual temp of 30C or 28C for 0.18 micron CPU.

    ------------------
    The worst system is not the one that has slowest QIII frame rate, but one that not works corectly.

  2. #2
    Join Date
    Mar 2000
    Location
    Pittsburgh, PA
    Posts
    1,365
    that voltage seems OK - a tbird 700 runs at 1.7 volts.

    I assume you use a GFD and not just the FSB, right?

    [oh, if you have 770 with a 110 fsb then you clearly have a gfd ]

    ------------------
    Impossible? Watch me.

    [This message has been edited by CTho9305 (edited 10-29-2000).]
    Impossible? Watch me.

  3. #3
    Join Date
    Nov 1999
    Location
    flagstaff, AZ, usa
    Posts
    555
    R U sure you soldered the L2 in the right places? my athy 500 550 core does 750@1.65V and my athy 600 600 core does 916@1.70V. and my athy 750@1035@1.75V.
    i would recheck your L2 the two slower ones of mine do there speeds at 1/2 the 1035 is at 2/4 maybe 1/3 if i wana go higher.
    so keep your l2 where it is and boot at say 600. check to make sure it's running at 2/5 or 1/3 i would use 2/5.
    if all eles fail try using a GFD if your soldering. i soldered mine but well. maybe i was lucky.
    iAMDking.
    "Is it worth it to give your heart away, and live for a great period of joy, risking the chance to have your heart broken? If your heart does get broken, was it worth it to give it away? - Me"

  4. #4
    Join Date
    Oct 1999
    Location
    Zagreb,Croatia
    Posts
    1,824
    iAMDking

    I am soldering multiplier and L2, power I can adjust from BIOS.

    I have resolderd L2 to 1/3 and that menas

    R101 +
    R102 -
    R103 +
    R104 -
    R106 -
    R107 +
    R110 -
    R111 +

    L2 is NEC-SEC Type 6

    + resistor (circuiet lo)
    - no resistor (circuit high)

    I have checked every resistor "thousend" times, and I have begin to think that Tom`s Athlon Classic overclocking guide is wrong.

    In windows I check L2 state and WCPUID detetcs 1/3 L2, and then if I need faster L2 I can speedup L2 with h-odas utility, and 3,6ns and 3.3ns chips work great @ 350MHZ or 1/2 L2, and I can mesure that in QIII and memory benchmarks.

    So I think L2 is not the problem and I think PSU is not the problem, atleast it should not be problem with K75 CPU (0.18 micron).

    ------------------
    The worst system is not the one that has slowest QIII frame rate, but one that not works corectly.

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