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Thread: Soooo I just up the multiplyer do I ?

  1. #1
    'ave it. Skii's Avatar
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    Soooo I just up the multiplyer do I ?

    XP2500 Barton (unlocked - NOT a 2500 m)
    Abit KD7A mobo (KT400A)
    1 GB Kingston DDR333

    I'm not really familiar with this overclocking thing but I assume I'm limited to 166 FSB ?

    So that means I just up the multiplier not the FSB ? Running at 166 x 12.5 (default 1.65v ) now

    seems happy ....
    Last edited by Skii; 31-05-2004 at 03:07 PM.

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    Now with added sobriety Rave's Avatar
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    Pretty much mate, yes. You could probably take the FSB up to 180 or so unless you've got very finickity AGP/PCI cards installed, but it's probably not worth the bother TBH. Memory bandwidth is over-rated IMO, you'll get a bigger boost in performance from a high clockspeed.

    Rich :¬)

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    I would say the opposite to Rave, i think memory bandwidth is everything.

    I managed to get my pc2700 to 220fsb, with 2.9v in an NF7-S, albeit they are now knackered and wont go past 183... arse.

    I would first try and up the fsb as far as you go. Put the timings to 2.5-3-3-7. And make sure that the CPU/RAM is synced i.e 1/1. Else you will get one component operating much faster than the other, which you dont want. Now increase the fsb by 5fsb's at a time and test for stability/errors using 3dmark/memtest. Once you hit a point where it is not stable increase the voltage and try again at the said point. If it is still unstable that is probably your limit.

    Now you should be at 11xfsb (11x180 = 1980mhz) So now start to increase the multipler. Just do a .5 at a time, and test for stability on each turn. If it is not stable then increase the voltage by .025, and try again. The default voltage is 1.65v, so 1.8v/1.85v would be recommended not to go above unless you have very good cooling, as here you may do long term damage to the CPU.

    After doing all that you should have a nice clock speed and bandwidth = a good computer

    Will
    | XP1600-m | ASUS AN78X Deluxe | r9700 pro | 2x512mb pc37000 |

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    I would agree with Rave. Especially considering that you have an unlocked CPU. The whole advantage of which is that you can get the best out of the CPU yet dont have to push the FSB up too high.
    With a motherboard and RAM that are rated for 166Mhz FSB you are fighting a losing battle trying to get a huge amount more memory bandwidth out of them. I mean it would be nice if you could get it up to 180FSB but then your RAM Motherboard and CPU are all overclocked . Whereas with an unlocked CPU you can knock up the multiplier and get it up as high as it will go without bothering the mobo or RAM at all. Much preferable IMHO.

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    mutantbass head Lee H's Avatar
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    you can up the multiplier or the FSB.

    I usually have mine running @ 166 x 13 or 3200 with a 400 FSB

    I have had 2.4 Ghz out of it before now but that caused it to reboot occasionally so its back to 2.2 while I play with the FSB/Mhz and other nice settings to see which work the best

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    'ave it. Skii's Avatar
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    Thanks guys, I'm going to try at 13 x 166 as wildmonkey suggests, but on 12.5 so far so good - still stable

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    No more Mr Nice Guy. Nick's Avatar
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    If you do get instabilities, try increasing your core and mem voltage a TAD... about .25 of a volt on top as a MAX!! And make sur you've got some good cooling in there dude!
    Quote Originally Posted by Dareos View Post
    "OH OOOOHH oOOHHHHHHHOOHHHHHHH FILL ME WITH YOUR.... eeww not the stuff from the lab"

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    mutantbass head Lee H's Avatar
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    lol cheers Deck - I was running it nearly 1.9 v for a while when overclocking, seems I need a better cooler than the Aero 7+, so I might have to wait till the end of June to pickup a corsair hydrocooler ex2000

    until then I'll wait as no doubt I'll get a newish system when the PCI express and DDR2 motherboards are released

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