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Thread: AMD "Thuban" Core (Phenom II X6) XS Overclocking Charts

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  1. #1
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    Quote Originally Posted by Particle View Post
    At 1.52V load (1.55V BIOS) and 4004 MHz, this 1055T system is pulling 420W. 247W idle. Talk about guzzling power... I'm thinking we may need to revise our 1.55V max for 45nm recommendation. That would be suicide for a budget board.
    Define budget board.

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    Quote Originally Posted by Polizei View Post
    Define budget board.
    Maybe a non properly cooled VRM system or medium/low quality standard capacitors to power the processor...
    The most common and low cost boards designed to support 95W processors ( being optimistic since I already have a Biostar AM2 board that recommended only 65W or lower processors ).

    @Particle,
    I'm very confused with the temperature reading from every software that I tried. All register 13-14ºC Idle but the environment ( ambient ) is 22ºC. Full load temps are 34-35ºC. That temps looks unrealistic to me. Any guess about this ? since the readings are directly from the core can I supose that the temperature curve ( or something like ) is changed ?
    Last edited by zhadoom; 05-18-2010 at 06:27 PM.
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    Quote Originally Posted by zhadoom View Post
    Maybe a non properly cooled VRM system or medium/low quality standard capacitors to power the processor...
    The most common and low cost boards designed to support 95W processors ( being optimistic since I already have a Biostar AM2 board that recommended only 65W or lower processors ).

    @Particle,
    I'm very confused with the temperature reading from every software that I tried. All register 13-14ºC Idle but the environment ( ambient ) is 22ºC. Full load temps are 34-35ºC. That temps looks unrealistic to me. Any guess about this ? since the readings are directly from the core can I supose that the temperature curve ( or something like ) is changed ?
    On my Foxconn A79A-S that has 5 phases and the mosfets have a heatsink, I noticed running 4Ghz at 1.39V (1.42 under load), the caps and the ferrite cores were too hot to touch - measured at 62C which I think is not good long term.

    The board was reporting temps at 56C (core temp was reporting 52). With vcore set to default - 1.28v (1.31 under load) and multiplier to 19, I now have it running prime95 at 47C for the last 9 hours. Huge difference in temps.

    I think overclocking Thubans by increasing vcore beyond 1.45v is something I would not attempt unless you have watercooling and the board has 8+2 phases capable of handling at least 140W with active cooling on the VRM.

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    Quote Originally Posted by p4spooky View Post
    On my Foxconn A79A-S that has 5 phases and the mosfets have a heatsink, I noticed running 4Ghz at 1.39V (1.42 under load), the caps and the ferrite cores were too hot to touch - measured at 62C which I think is not good long term.

    The board was reporting temps at 56C (core temp was reporting 52). With vcore set to default - 1.28v (1.31 under load) and multiplier to 19, I now have it running prime95 at 47C for the last 9 hours. Huge difference in temps.

    I think overclocking Thubans by increasing vcore beyond 1.45v is something I would not attempt unless you have watercooling and the board has 8+2 phases capable of handling at least 140W with active cooling on the VRM.
    I`m troubled about that readings. All softwares show the same.
    This snapshot is about 2 hours of x264 conversion.
    Anyone knows the default VID for each p-state ?
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    Last edited by zhadoom; 05-18-2010 at 06:51 PM.
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  5. #5
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    Quote Originally Posted by p4spooky View Post
    On my Foxconn A79A-S that has 5 phases and the mosfets have a heatsink, I noticed running 4Ghz at 1.39V (1.42 under load), the caps and the ferrite cores were too hot to touch - measured at 62C which I think is not good long term.

    The board was reporting temps at 56C (core temp was reporting 52). With vcore set to default - 1.28v (1.31 under load) and multiplier to 19, I now have it running prime95 at 47C for the last 9 hours. Huge difference in temps.

    I think overclocking Thubans by increasing vcore beyond 1.45v is something I would not attempt unless you have watercooling and the board has 8+2 phases capable of handling at least 140W with active cooling on the VRM.
    I agree with this basically
    The x6 oc'ed is putting rather high demands on the pwm
    I stick by cpuz/hwmonitor as my refrence of choice.
    Any other temps/voltage readings I dismiss as invalid imo

  6. #6
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    Quote Originally Posted by zhadoom View Post
    I'm very confused with the temperature reading from every software that I tried. All register 13-14ºC Idle but the environment ( ambient ) is 22ºC. Full load temps are 34-35ºC. That temps looks unrealistic to me. Any guess about this ? since the readings are directly from the core can I supose that the temperature curve ( or something like ) is changed ?
    Your results are fairly consistent with what we're all seeing. Nothing appears to be calibrated for Thuban's temperature probe yet. +10-20C for real temps are what we're guessing.
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    Read somewhere to use temp monitor that came with the board.
    Ran Bionic for 8 days at stock speeds but 100% on all cores using the stock X6 cooler. Outside air temp was in the mid 90s F most of the week and I don't know what the inside temp was because the thermostat only goes up to 90F but it was warm. Asus probe never budged from 48C. Only the cpu cooler fan speed varied from ~2500 rpm at night to 4800 rpm in the afternoon. Computer never blinked. 250mm fan above the board on Antec Skeleton case.
    It is in air conditioned room now and OC to 4.0G/1.4v still with stock cooler and can game all night without hiccups.
    I'm really happy with this 1090T.

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