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Thread: A little undervolting adventure

  1. #17
    Not a good person scaryjim's Avatar
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    Re: A little undervolting adventure

    Quote Originally Posted by Queelis View Post
    No reason not to
    Addendum: unless your motherboard doesn't support it Not all motherboards will support downward voltage adjustments, which is frankly a PITA. So if you're buying components specifically to undervolt, make sure you check the manufacturer's website careful to ensure that it *does* support it.

    My big frustration is that I can't undervolt the IGP on my motherboard! I reckon I could cut a few extra watts if I could...
    Last edited by scaryjim; 20-10-2010 at 04:36 PM.

  2. #18
    Efficiency freak Queelis's Avatar
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    Re: A little undervolting adventure

    Quote Originally Posted by scaryjim View Post
    Addendum: unless your motherboard doesn't support it Not all motherboards will support downward voltage adjustments, which is frankly a PITA. So if you're buying components specifically to undervolt, make sure you check the manufacturer's website careful to ensure that it *does* support it.
    Huh, didn't know that. I guess I'm lucky Will have to have that in mind when upgrading (probably a long time from now, though).

  3. #19
    Not a good person scaryjim's Avatar
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    Re: A little undervolting adventure

    Quote Originally Posted by Queelis View Post
    Huh, didn't know that. I guess I'm lucky Will have to have that in mind when upgrading (probably a long time from now, though).
    I'd have to dig back through the ancient threads, but based on my adventures underclocking on an ASUS 785G EVO motherboard someone here built a similar machine with an MSI board, and it didn't support downward voltage adjustment! I can probably dig the thread out with a bit of searching: I've linked to it a couple of times recently in power draw related threads...

    EDIT: I get a bit OCD about these things. Apparently
    Quote Originally Posted by GaryRW View Post
    You can't adjust the CPU vcore on the MSI 785GTM-E45
    I assume from that that you can't adjust it in either direction!? Dunno.
    Last edited by scaryjim; 20-10-2010 at 05:16 PM.

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    Headless Chicken Terbinator's Avatar
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    Re: A little undervolting adventure

    *May* of been me. That MSI board is in the bad books, in the attic, bricked - POS.
    /rant.
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

  5. #21
    Efficiency freak Queelis's Avatar
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    Re: A little undervolting adventure

    Quote Originally Posted by scaryjim View Post
    I'd have to dig back through the ancient threads, but based on my adventures underclocking on an ASUS 785G EVO motherboard someone here built a similar machine with an MSI board, and it didn't support downward voltage adjustment! I can probably dig the thread out with a bit of searching: I've linked to it a couple of times recently in power draw related threads...
    Meh, no need - we need new examples!

    I encourage everyone to undervolt and tell us (or me, but I see I'm not the only one interested in that, thankfully), especially the folding folk who don't overclock - pay less for electricity/save the planet/whatever's your cup of tea

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    Headless Chicken Terbinator's Avatar
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    Re: A little undervolting adventure

    My CPU is quite good when it comes to undervolting, runs turbo boost stable at around 1.1v with high v droop as well
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

  7. #23
    Not a good person scaryjim's Avatar
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    Re: A little undervolting adventure

    Well, if we're after new examples I'll be instaling a pico in my HTPC in the next day or two (well, an FSP equivalent anyway). I'll be running load tests at 1.04V first, before I decide if I'm going to risk loading the 90W PSU up with stock volts

    After all that talking about really fancying a Pico in the Aria, I was kinda sad when the old Antec PSU blew, but also kinda glad that it gave me an excuse to get the debit card out . PSU's arrived at work today (along with a nice look FSP 19V 90W power brick and a tube of AS5 to take the order over £50!) and is *unbelievably* small - I really hadn't realised just how tiny these things were - I'll do some pics when I fit it and post some new power draw figures to compare to the last lot!


    edit: Pico in the Aria? What was I thinking That'll be sig quoted by the end of the day *sigh*...

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    Re: A little undervolting adventure

    I'll give it a go but with a PWM fan it's not so easy to get relative temps. not sure how to set it to auto (actually thats the setting in the bios). HWMonitor pro does contain some sort of power meter; any other programs out there?

  9. #25
    Headless Chicken Terbinator's Avatar
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    Re: A little undervolting adventure

    If you mean power in terms of wattage, HWmonitor always comes up with 95W on mine no matter the voltage and only increases/decreases with BCLK changes.
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

  10. #26
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    Re: A little undervolting adventure

    I know this sounds stupid but does undervolting or underclocking void warranty ? Personally I dont think it does because your not really pushing it ur making it easier for cpu maybe processor ompanies should give extended warranties anyway but I cant find anything to confirm that it does not void warranty
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  11. #27
    Sprouts are not food Attila the Bun's Avatar
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    Re: A little undervolting adventure

    Ok...is there a HEXUS lexicon somewhere I can go and look up some TLAs etc?

    pico in the aria?

    FSP?
    Of course I'm perfect you just need to lower your expectations.

  12. #28
    Headless Chicken Terbinator's Avatar
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    Re: A little undervolting adventure

    Well other than a BSOD, i don't think undervolting is detrimental to a chips health so i see no reason why it would void the warranty.
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

  13. #29
    Headless Chicken Terbinator's Avatar
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    Re: A little undervolting adventure

    Quote Originally Posted by Attila the Bun View Post
    Ok...is there a HEXUS lexicon somewhere I can go and look up some TLAs etc?

    pico in the aria?

    FSP?
    FSP is a PSU brand.

    Pico is a type of PSU that he's using in his Antec Aria chassis.
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

  14. #30
    Efficiency freak Queelis's Avatar
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    Re: A little undervolting adventure

    Quote Originally Posted by Domestic_Ginger View Post
    I'll give it a go but with a PWM fan it's not so easy to get relative temps. not sure how to set it to auto (actually thats the setting in the bios). HWMonitor pro does contain some sort of power meter; any other programs out there?
    I don't fret about that - I just go registering both the temperature and the speed of fan, since I'm interested in lowering both temps and noise. Usually both drop a bit I don't think a software power meter would be anything trustworthy - just as the software voltage meters.

    About the warranty - I suppose anything other than running the CPU bone-stock (in any circumstances other than those it comes with) would void the warranty, but it's not that this thing should cause any harm (I hope).

  15. #31
    Not a good person scaryjim's Avatar
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    Re: A little undervolting adventure

    Aaaargh!

    Installed my FSP PSU in my M4A785TD-M EVO and it won't POST If I pull the 12V ATX connector out the mobo will power on & fans spin but (obviously) no post: if I plug the 12V ATX connector in the board starts powering up then immediately goes back into standby and has to be powered down to start up again!!!

    Grrr. Any ideas? I'm not sure if it's the PSU having too much load put on the 12V rail and kicking in the over-current protection, or if the motherboard is somehow powering itself down. But flip it! This thing's supposed to put out 5A on the 12V rail: and I really don't believe my PC is pulling more than 60W with an undervolted 45W CPU. Even with the grotty Q-TEC it doesn't pull much more than 80W from the wall, and I'll eat my hat if the Q-TEC is 75% efficient at that kind of power draw...

  16. #32
    Headless Chicken Terbinator's Avatar
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    Re: A little undervolting adventure

    Too much load on the 3.3/5v lines ?
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

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