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So close to 4Ghz, yet so far - Page 2

post #11 of 24
I need 1.45v for 4ghz on my 1055t. That was on a horrible board though.

    
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post #12 of 24
Might be your ram dosent like the High FSB... Try bumping it a tad see if it helps.
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post #13 of 24
Strangely enough I don't see many Thubans breaking 4.0ghz under 1.4 volts. I can recommend staying around 225 fsb and using the cpu multi for best results however you're working with a locked multi If you are set on breaking 4.0ghz do the NB overclock after you oc the CPU. You might not get as high of a NB oc however its less stressful on the system. I'm sure you already know to keep HT as close to 2000mhz as possible.
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post #14 of 24
Thread Starter 
Quote:
Originally Posted by jammo2k5 View Post
Might be your ram dosent like the High FSB... Try bumping it a tad see if it helps.
Right now the memory is running under stock, so I don"t think its that.
post #15 of 24
Quote:
Originally Posted by ht_addict View Post
Right now the memory is running under stock, so I don"t think its that.
That maybe so however the RAM might not like the High FSB... this is due to the fact that most DDR3 kits are designed for intel and on intel very rarely run over 225 FSB.
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post #16 of 24
Increase the voltage on the ram a little, maybe 0.1 or 0.15v, it helped me tons
    
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post #17 of 24
Quote:
Originally Posted by ht_addict View Post
Right now the memory is running under stock, so I don"t think its that.
my system wouldn't post until it changed my CL7 1600 ram to CL9 1333 even though CL7 1600 are the stock settings. it's now stable at stock settings though even though it feels like I'm OCing my ram to run at it's rated spec.
So stock settings might not always mean stable especially when you're over clocking
post #18 of 24
Quote:
Originally Posted by ht_addict View Post
A little step in the right direction without upping the voltage. As for my other voltage settings, only the CPU-NB has been increased to 1.25v. Here is where it gets strange. If I move any higher IBT will either fail or give me a BSOD. Even if I up the voltage on the vcore and/or cpu-nb, I just get an IBT fail. Any ideas.
I've found that +.1v on the NB (not to be confused with CPU-NB) has helped before. Try that
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post #19 of 24
Quote:
Originally Posted by Enfluenza View Post

heres another tip. try to keep HT low

for HT try to keep it around 1.9-2.1Ghz.
This also ^^ (slightly edited)
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post #20 of 24
I agree that HT link should be kept low, as close to 2000mhz as possible and I usually recommend keeping it below 2000 (1800-2000 for example).

Most tests out there agree with this philosophy on HT link. However, I just found this thread that suggests HT link can actually lead to 300 point gains in 3Dmark06 as well as other 3dmark programs.

It should be noted that the NCSpecV81 (the author of the thread linked above):
*Is running his 965 BE at 4.6ghz
*Has two 5870s in CFX
*And 32-bit windows

This might not make a huge diffference but at those clocks he might need the extra Hypertransport Bandwidth where most would not. Also, I believe he has increased his HT voltage for stability...which could be risky for those with cheaper system boards.

Just some info for thought, hope it helps
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