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Thread: Over Clocking AMD FX-60

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    Over Clocking AMD FX-60

    Hi All,

    I have just built my new rig (£3,500 ouch!)

    I have an AMD FX-60 on an Abit AN8 32X mobo using 2GB Crosair TwinX XMS4000 memory.

    I am having issues getting the memory to run at its specified speed of 250MHZ i.e. DDR500. I have done a bit of digging around the internet and get the idea that I need to have the CPU FSB running at the same as the memory FSB. So last night I tried upping the CPU to 250MHZ with a 12x Multiplier and a 1.4v with the memory at DDR 500 (250MHZ) with 2.9v. However this and multiple other settings wouldn't boot. The mobo displayed the bios code C1.

    Can anyone please help as I want my kick arse system to run at its full potential!

    Thanks,

    James

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    Quote Originally Posted by wilksj01
    So last night I tried upping the CPU to 250MHZ with a 12x Multiplier and a 1.4v with the memory at DDR 500 (250MHZ) with 2.9v.
    do you really think that your CPU will do 3.0GHz at 1.4V?

    Also, when you had external clock of 250 what was your DRAM clock set at?
    It's a divider not an absolute so if you had 250 external clock & the DRAM clock set at 250 then the board was trying to run the RAM at something like DDR600 ...
    To run the RAM at DDR500 you should have the external clock at 250 & the DRAM clock at DDR400 (400 gives you a direct correlation betwen external clock & RAM bus speed).

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    Thanks for your help. That must be where I'm going wrong. What voltage would you say I needed on the CPU for it to run stable at 3.0GHz?

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    I really don't know as all CPUs/systems are different.
    Threads like http://www.xtremesystems.org/forums/...ad.php?t=88322 suggest over 1.5V though.
    Toms Hardware on watercooling used 1.4625V
    I would suggest that you work your way up testing as you go.

    Hopefully you have good cooling & a good PSU too.
    Last edited by BUFF; 20-06-2006 at 01:30 PM.

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    I've got a Zalman Aero Flower Cooler and a 900W Tagan PSU. Do you think this will be good enough?

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    That's the 9500?
    Yes, both that & the PSU will be fine.

    Btw there's a very good forum at Abit-USA if you care to join.
    http://forum.abit-usa.com/index.php

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    just out of interest why do you need to overclock, i can't think of anything that would push a system as high end as the price tag suggests!?

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    Do you think it's best to up the FSB in the bios or use a software utlitity to configure it?

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    Senior Member ExceededGoku's Avatar
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    definitely the bios, software utilities are useless and in my experience dangerous to files (corruption, etc). Bios is the ONLY way to overclock successfully.
    Core 2 Duo E6600 @ 3.2Ghz (400Mhzx8) 1.52V (set in bios, 1.47v real) | 4GB GeIL PC6400 4-4-4-12 | Gigabyte DQ6 @ 1600Mhz | HD2900XT 1GB | Enermax Infiniti 720W | Silverstone TJ07-B with custom watercooling | BenQ FP241WZ
    3dmark05 - 13140 | 3dmark06 - 6698 | SuperPi 1M - 15s

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    I don't particularly want to overclock, I just want to run the DDR 500 at full speed. I have been told that to do this the FSB of the CPU will need to be running at that of the memory the end result being an overclocked CPU!

    I may be wrong!!!

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    Quote Originally Posted by wilksj01
    I just want to run the DDR 500 at full speed. I have been told that to do this the FSB of the CPU will need to be running at that of the memory the end result being an overclocked CPU!
    It is possible to run your board/CPU at defaults & the memory at DDR500 by using the DDR500 divider. However, you may actually get better results by running it slower but with tighter timings.

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    ^^ /agree
    Core 2 Duo E6600 @ 3.2Ghz (400Mhzx8) 1.52V (set in bios, 1.47v real) | 4GB GeIL PC6400 4-4-4-12 | Gigabyte DQ6 @ 1600Mhz | HD2900XT 1GB | Enermax Infiniti 720W | Silverstone TJ07-B with custom watercooling | BenQ FP241WZ
    3dmark05 - 13140 | 3dmark06 - 6698 | SuperPi 1M - 15s

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    Interesting..... If I were to keep the FSB on the CPU at it's default 200, what do you think the memory would need to be set at? I belive the memory timings are currently 3-4-4-8 at DDR500

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    you could probably drop them to the lowest your mobo can handle (if that doesn't work just reset CMOS and try until you are completely stable) also make sure voltages are right on your RAM I believe it should be set at 2.7V but at 2.9V low latencies should definitely be possible. Don't take my word on this but I am pretty sure that all DDR memory runs at 2.7V standard.
    Core 2 Duo E6600 @ 3.2Ghz (400Mhzx8) 1.52V (set in bios, 1.47v real) | 4GB GeIL PC6400 4-4-4-12 | Gigabyte DQ6 @ 1600Mhz | HD2900XT 1GB | Enermax Infiniti 720W | Silverstone TJ07-B with custom watercooling | BenQ FP241WZ
    3dmark05 - 13140 | 3dmark06 - 6698 | SuperPi 1M - 15s

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    btw is that 2x1Gb DIMMs or 4x512Mb?

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    It's 2 x matched 1GB RAM. I'll give it a try at lower setting then as it's bound to be better for the CPU.

    Cheers for your help.

    James

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