Not able to boot Windows when 4.2GHz even though 1.6v vCore pumped.

-pWs-

Have u tried also pumping the mem controller voltage apart from the vcore alone???

Was trying to get Large FFT prime stable on my PII 550 BE at 3.8GHz, at about 1.465v vCore, everything else stock. Couldn't get it stable for some reason till I ran my RAMs at 2.0v.

Happily running at 3.8GHz now, but without any cores unlocked. What terrible luck.

updated ur sigs bro
easy for us to help you

Just did, much thanks if you can help me out

I've been poking around the settings already for two days straight, feel like giving up hope to get extra cores already.

The first thing I did was to update to the modded BIOS and set ACC to Auto. Core Levelling is at Auto as well. Managed to boot into Windows with four cores, but Worker #2 would immediately fail after running Prime95. The other three would continue running. Upped the vCore, no difference. Shouldn't it be Worker #3 or #4 that should fail?

Done that bro.

-pWs-

@8tvt
Vantage score at overclock database.
http://forum.lowyat.net/index.php?showtopi...&#entry27680112

-pWs-

do try out if u have time bro, wanna find out how well our ram fetch under other mobos, especially those w/ award bios...

mebe ya 4th core aint healthy enuf bro... but still try harder to find d solutions, that's what make it fun, isn't it? my case is diff coz there's no core(s) to unlock & w/o unlocked multi d chip is like half crippled in oc...

turn off c&q & green power utility in bios, it's a must (for me) if there's oc done especially d latter.

for 790gx a3+, i can safely say 06/29/09 is d best so far, even for lousy chip like mine.

addin vimc a.k.a cpu-vb voltage is a must if u oc d nb freq, else instability is what u get. for stock volt i reckon it's gud for 2000MHz ~ 2200MHz (mite be higher) depend on board/chip.

there's no guarantee for unlockin especially a brand new chip, it's a hit or miss scenario that's why i prefer buy proven stuffs which ledi tested.

d bad core(s) can be any 2 of d 4 cores, not necessarily d last 2 or first 2.

mane 3d mark @ 4.0GHz ss bro...

No time to do yet bro.
So 3DMark @ 3.8GHz 1st.

The score is almost the same as my i7 2.67GHz SMT on.

-pWs-

erm .after i assemble all the part .the pc cant boot . or even post .means motherboard spoil? ram already use one stick oni .

what motherboard??

when i get my new system.. i also encounter this....... so bad luck~ its motherboard

acer oem motherboard. .

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Added on August 2, 2009, 10:02 pmmine is not new system. i just want to clean the dust . i reattach the heatsink .then end up cannot power up

This post has been edited by fcuk90: Aug 2 2009, 10:02 PM

Hmm, someone told me that in Prime95, Worker #1 will always be allocated to Core 1, so on and so forth, so which I assumed if Worker #2 fails, it is because of the second core. But then again, why is the second one failing when it should be working correctly?

Also, can AOD individually disable or enable cores?

Miahahaha, the difference is u only pay RM350 for the chip instead of RM1k for the aiseben

take back my word..
now try to find the lowest vcore for 3.6 (need to start burn in all over again la..)
life is boring without OC...now seek for daily use speed...

wah law..
1.6vcore..
no weird smell comes from ur mobo a bro?
even 1.45v is scary for me..ni kan plak 1.6 yg sgt extreme....

Want to break 4.2GHz ma

-pWs-

if 4 cores scenario, yes, worker 2 will always stresses core #2, but in dual/tri-core setup, it could be diff case coz we wouldn't know core(s) #? outta 4 has/have been disabled.

u can't disable core usin aod which is only gud for disablin acc or lower multiplier for individual core. however, core disablin can be done usin msconfig in windows or via downcore option in bios. for ya case, u can always use lower multiplier for core #2 while leavin d rest @ oc'ed setting. all d best...

yalor... he didn't realize how lucky he is to own such a gud chip (thou his skills play a big role there )...

This post has been edited by ah_khoo: Aug 3 2009, 08:56 AM

Ah, never thought about actually disabling the core from Windows. The BIOS doesn't allow disabling of individual cores, however I could test it by setting the processor affinities in the Task Manager. I'll try your method as well and see if it works.

downcore is gud for disablin core(s) but minus d option to choose which is to be disabled, i supposed it's same w/ msconfig method.

there must be special label(s) (for bios to recognize) on those defective core(s) else by usin either stated method d healthy core(s) could be accidentally disabled while d unhealthy one(s) being enabled...

This post has been edited by ah_khoo: Aug 3 2009, 09:20 AM

That's what I'm guessing as well. Initially I assumed that the working cores will always go in the correct order, Core #0 and Core #1 are the ones that will always work, and Core #3 and Core #4 would be the faulty ones (in my case). From this example it's quite probable that it's not the case. It also doesn't make sense that AMD would have to dump the chip if the first two cores didn't work when binning for an X2

Will let you know the results later in the evening. Thanks again