Athlon 64 3000 anomaly - what gives???

Something strange happened that I can't reproduce. These are my results on my A8N-SLI board:

Stock 3000:
200 x 9 @ 1.4 (1800)

Got all the way to:
245 x 9 @ 1.4 (2160) - stable during tests

250 x 9 @ 1.4 wouldn't post even with the voltage clear up to 1.55. So I backed it off to where it was last stable (245 x 9) but it wouldn't even post there anymore.

Now I have it back down to 225 x 9 and anything more than that won't boot or is unstable, regardless of the voltage.

What gives? I can't be stuck at 2Ghz when I had it stable at 2.16??? I didn't change anything during the process except for the CPU settings and the temps stayed between 42 and 46 the whole time.
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  1. You probably must chanage your memory timmings.

    What kind of memory do you have.

    I got one 3000+ vienice and its stable at 2740, 305 FSB ,305mHz ddr 400:)
    Ram can go more to 311MhZ but proc. cant:(
  2. Quote:
    Something strange happened that I can't reproduce. These are my results on my A8N-SLI board:

    Stock 3000:
    200 x 9 @ 1.4 (1800)

    Got all the way to:
    245 x 9 @ 1.4 (2160) - stable during tests

    250 x 9 @ 1.4 wouldn't post even with the voltage clear up to 1.55. So I backed it off to where it was last stable (245 x 9) but it wouldn't even post there anymore.

    Now I have it back down to 225 x 9 and anything more than that won't boot or is unstable, regardless of the voltage.

    What gives? I can't be stuck at 2Ghz when I had it stable at 2.16??? I didn't change anything during the process except for the CPU settings and the temps stayed between 42 and 46 the whole time.


    The problem is the motherboard. I have that exact board in a workstation and the board won't ever post beyond 245MHz. That motherboard also only let me go stable to 232MHz MAX and it doesn't matter how many volts you use (1.55v is the max for the A8N-SLI as you said, and you should NEVER exceed that in ANY of the newer CPU's). Get a new motherboard, such as a DFI LanParty, I have had great experience OC'ing with those, got a CPU to 300MHz with one and @ 1.45v, twas an Opty but you get the jist.

    ~~Mad Mod Mike, pimpin' the world 1 rig at a time
  3. you could check the memory, but it's more likely like MMM said. Asus sucks, and DFI rules 8)
  4. 1. What DDR do you have and what are the latencies set in BIOS?
    2. What is your HTT multiplier?

    Try with greater memory divider, ex. set DDR at 333MHz (5/6), so with + 20% overclock(240MHz) the DDR will work at 400MHz.
    Another important thing is that you should keep the HTT speed around 1000MHz(you have the s939, while for s754 is 800MHz). Put lower HTT multiplier, eg. 4 4x240=960MHz. 5x240=1200 might make your mainboard unstable, heats up the chipset more and might damage it(most are not much overclockable).
  5. Yea the a8n-sli deluxe has issues past about 233fsb 1:1... That's why i got a new motherboard myself. (I think there is a new revision of that motherboard which does better [the a8n-sli deluxe...not talking about the a8n32-sli deluxe] because i've seen 3-4 different users on overclockers who have managed a 300fsb on theirs. I sold mine to a buddy who didn't want to oc, but wanted the raid and sli features. =) My jetway sli board is flakey oc'd, and my a8n-sli premium will go as far as 1.5v will push...I have posted to windows 330fsb 1:1 with some tccd and 1.5vcore on a 4x multi with my old 3000 winnie and the premium. Now i've got my 3800 x2 on there at 2.5ghz 1.4875vcore 1:1 250fsb 2x1024 ocz plat 1.8v 3 3 3 10 13 14 3 3 1T.

    edit: The guy posting about using a divider, is definately a way to push higher however! It still has issues at about the same memory fsb however...
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