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FSB Solid @ 279 but not 280

post #1 of 14
Thread Starter 
Ok so,

I'm trying to get my cpu to 2.7 ghz or higher, I have it at about 2.65 now, boots every time, and I can run orthos for over 30 minutes, without it getting terribly hot. The reason my fsb is at 279 and not 280, is because at 279 it is solid as a rock, but at 280, it wont even boot windows. I am clueless on how to get it higher. I haven't updated the bios, because of the risk, but I will be willing to if it will solve my problem. HT link is at 835.6, memory frequency is at 529.2 x2, My cpu is at 1.4v, memory is on 2.0 (stock is 1.8), and the other two are bumped up two steps (I can't think of what they are called). Anyone have any idea's?

This is all on my sig rig, if you need more info just ask!

Thanks alot!
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post #2 of 14
raise the northbridge.
post #3 of 14
Try bumping it beyond 270, like 272-275, a good chance it will wotrk. And if that dosnt work add some voltage to your northbridege.
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post #4 of 14
Thread Starter 
at 282, it doesn't even want to boot, I had to restart it multiple times, and leave it turned off for a few minute just to get it started. The northbridge is at 1.36, the maximum the motherboard will allow.
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post #5 of 14
Did you ever do the whole "finding max FSB" shebang? Reason being that some motherboards have FSB "holes" where they are not stable, and perhaps 10MHz higher, they're rock-stable. Just lower your mem, HTT, and CPU multiplier to their lowest, and start increasing the FSB--see where it fails to POST anymore (may require adding vcore depending on how low you are able to set your CPU multiplier). Then make a larger jump in FSB (say 10 or 15MHz) and see if it's stable there. Keep going until you reach some absurdly high FSB--that should be your max FSB (hopefully it's absurdly high, and not really 279MHz--would be a pity since that chip should go to 3GHz).

My motherboard (not an overclocker by any means) has an instability between 250 and 260--after 260 it's fine until another range I can't remember, where it becomes unstable again.
    
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post #6 of 14
Thread Starter 
On this motherboard there is no cpu or memory multiplier adjustment (unless there is that I don't know about, there is a way to put the ram to ddr 667, but that will cause the board to go into safe mode, and not able to overclock), otherwise I would have tried that before now, however, I will try, 285, and 290, but I will bump up the cpu voltage up some.
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post #7 of 14
Thread Starter 
ok, at 285 it just reverts to defaults, same with 290, I have the memory, ht, and northbridge voltages at the maximum for this motherboard. I guess I will leave it at a little below 2.65 ghz for now, until I can find this out, maybe it's just the maximum it can take.
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post #8 of 14
Quote:
Originally Posted by azkid110 View Post
ok, at 285 it just reverts to defaults, same with 290, I have the memory, ht, and northbridge voltages at the maximum for this motherboard. I guess I will leave it at a little below 2.65 ghz for now, until I can find this out, maybe it's just the maximum it can take.
Yeah--I looked up your mobo. Seems like that's about all it's got. But to be quite honest, I think you have it pretty good-- ~2.7 from 1.9 on a non-overclocking motherboard with harldly any OC options is really good. I'd say that if you wanted to squeeze that extra 300MHz out of the CPU, you'd have to get another mobo--but in my humble opinion, it might not be worth it if everything's working out well for you (aside from getting a higher overclock).

What speed is your RAM running at in CPU-Z when you have your FSB at 279?
    
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post #9 of 14
Have you tried booting at 279 and then use clockgen to raise the fsb in windows? Sometimes you can get a few more mhz out of it that way.
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post #10 of 14
Thread Starter 
guyladouche, I think your right, thanks for taking the time to look that up. At 279 mhz fsb, my memory is kicking out 529.2 mhz and it's DDR2, I think that may be holding me up aswell as my psu. awdrifter, I will try that.
Thanks everyone.
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