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can't get past FSB 395.

post #1 of 9
Thread Starter 
hello all, at the moment my FSB is set to 395. anything higher and my screen doesn't respond. only the power button blinking. my vdimm is 2.15, my vcore is 1.55v. any suggestions?
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post #2 of 9
RAM timings?
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post #3 of 9
Is the hyperpath3 disabled in your bios?
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post #4 of 9
lock the pci bus
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post #5 of 9
Well, I guess it could be something with the ram. Try a divider or loosen your timings. Like said also, make sure hyperpath3 is disabled in bios. Another possibility, is that you're at the max oc for your chip, without giving it well over 1.5v anyway.

My first 6600 couldn't get much over 3.3ghz. I returned it for another, which was a later week batch. My second one can go up to 3.6ghz before I need questionable voltage (unless I had better cooling).

What's your ram stock volts? I had some OCZ platinum sticks with stock 2.1v. You can easily give them 2.25v if that's the case. Have you tried upping your vdimm? Since you have pc5400 maybe they just need a little more juice.

Also, if you are setting your ram timings manually, try to temporarily set the enable spd setting in bios. Let the ram timings go auto, increase your vdimm to 2.25v (you can probly go higher, look around to see what others with your ram are running them at, for timings and volts)- then try it again. I had that problem with my ocz sticks, they just wouldn't oc really well unless I let the timings go auto. I tried the actual default stock timings, along with many other combinations, no dice. Then I got my lovely corsair, and all those problems went bye bye.
    
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post #6 of 9
Thread Starter 
i've tried setting vdimm to 2.20, still the same.. i don't wanna go higher coz i might fry my ram. hyperpath 3 is disabled. my ram timings are set on enabled at the moment. i've also tried 5-5-5-15 and 4-4-4-12 and still no post, just power button on screen blinking. it can't be my chip because its week 27 and i've heard that week 27's are very good overclockers.. any nore suggestions guys?
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post #7 of 9
Have you increased your MCH voltage to 1.65 yet?

You need to keep the northbridge temp down with fans and such as well to get the fsb up there
    
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post #8 of 9
Thread Starter 
Quote:
Originally Posted by Mister Crowley
Have you increased your MCH voltage to 1.65 yet?

You need to keep the northbridge temp down with fans and such as well to get the fsb up there
yep, its up there dude
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post #9 of 9
set it ram to a divider, ie. lower the speed of the ram in the bios. and turn on spd timing if you haven't yet. I think the primary problem is just that the ram you have can't run that high with the current settings.
I'm not sure what kind of chips you have in those ram sticks, if its D9 it should love the extra voltage, but I don't know how it would react to voltage if its something else.
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