AMD Phenom II Core Unlock Problem.. help!!

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SPBoss

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#1 SPBoss
Member since 2009 • 3746 Posts

I have an AMD Phenom II 550BE Dual-core and managed to unlock it to 4 cores, Firmware set to Hybrid, ACC set to all cores -2%

It runs windows 7 for a few minutes before i get the same bsod error ''clock interrupt not recieved by secondary processor''

Does this mean something is out of sync? I had to lower my HT Link Speed to 1.6GHz because it wouldn't get past the windows loading screen at 2GHz

CPU VID is at 1.425V

CPU NB is at 1.175V

CPU Clock is underclocked to 2600Mhz

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shane_orija

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#2 shane_orija
Member since 2008 • 910 Posts
Which motherboard do you have? Search around google and see if it allows for unlocks.
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04dcarraher

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#3 04dcarraher
Member since 2004 • 23859 Posts

There is a reason why your having issues, its because one or both of the cores are broken/unstable which is why its a dual core cpu to begin with.

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ionusX

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#4 ionusX
Member since 2009 • 25780 Posts

There is a reason why your having issues, its because one or both of the cores are broken/unstable which is why its a dual core cpu to begin with.

04dcarraher

correct not all phenom IIx2's can be unlocked to a full 4 cores. due to damaged/faulty cores. some can only become a tri core some wont even make it past 2.

the only guaranteed 4 core unlocked come from phenom IIx3 cpu's as generally speaking those have one core turned off and arent faulty/damaged cores.

soo NOW YOU KNOW!

try turning off one of the cores and see what happens.. a tri core is certainly a partial victory.

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hartsickdiscipl

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#5 hartsickdiscipl
Member since 2003 • 14787 Posts

[QUOTE="04dcarraher"]

There is a reason why your having issues, its because one or both of the cores are broken/unstable which is why its a dual core cpu to begin with.

ionusX

correct not all phenom IIx2's can be unlocked to a full 4 cores. due to damaged/faulty cores. some can only become a tri core some wont even make it past 2.

the only guaranteed 4 core unlocked come from phenom IIx3 cpu's as generally speaking those have one core turned off and arent faulty/damaged cores.

soo NOW YOU KNOW!

try turning off one of the cores and see what happens.. a tri core is certainly a partial victory.

I had a different experience working with a Phenom II X3 720 BE in 2 different motherboards. I couldn't get that 4th core stable, no matter what I did. I think some of those have faulty 4th cores as well.

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ionusX

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#6 ionusX
Member since 2009 • 25780 Posts

[QUOTE="ionusX"]

[QUOTE="04dcarraher"]

There is a reason why your having issues, its because one or both of the cores are broken/unstable which is why its a dual core cpu to begin with.

hartsickdiscipl

correct not all phenom IIx2's can be unlocked to a full 4 cores. due to damaged/faulty cores. some can only become a tri core some wont even make it past 2.

the only guaranteed 4 core unlocked come from phenom IIx3 cpu's as generally speaking those have one core turned off and arent faulty/damaged cores.

soo NOW YOU KNOW!

try turning off one of the cores and see what happens.. a tri core is certainly a partial victory.

I had a different experience working with a Phenom II X3 720 BE in 2 different motherboards. I couldn't get that 4th core stable, no matter what I did. I think some of those have faulty 4th cores as well.

notice the bolded word. some of them are in fact damaged core but they are few and far between normally they just take the top returns from the die that couldnt measure up to a proper phenom II x4, test to ensure the third core is working clock it up and ship em off in a box to market.

yes some of them dont work but their are FAR more working 4 cores than bad 4th cores.

generally a cpu never loses a single core when your talking about 4,5,6+ cores on a cpu they lose 2 at a time. but given that anything is possible such results to exist. why does it happen.. idk sorry i dont work for amd or intel.. i couldnt honestly say. ill cough it up to the magic of disney.

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tequilasunriser

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#7 tequilasunriser
Member since 2004 • 6379 Posts

[QUOTE="ionusX"]

[QUOTE="04dcarraher"]

There is a reason why your having issues, its because one or both of the cores are broken/unstable which is why its a dual core cpu to begin with.

hartsickdiscipl

correct not all phenom IIx2's can be unlocked to a full 4 cores. due to damaged/faulty cores. some can only become a tri core some wont even make it past 2.

the only guaranteed 4 core unlocked come from phenom IIx3 cpu's as generally speaking those have one core turned off and arent faulty/damaged cores.

soo NOW YOU KNOW!

try turning off one of the cores and see what happens.. a tri core is certainly a partial victory.

I had a different experience working with a Phenom II X3 720 BE in 2 different motherboards. I couldn't get that 4th core stable, no matter what I did. I think some of those have faulty 4th cores as well.

Indeed. I unlocked my 720BE's 4th core but I couldn't get it stable with an overclock. It stressed fine at stock speeds but again lost stability with certain games. Not sure how Prime95 and Intel burn test wouldn't crash it at stock speeds with the core unlocked but Bad Company 2 would. I reverted it back to a triple-core and everything has been gravy since. I've heard that with later batches of the 720BE AMD didn't have enough of the actual gimped processors to fill demand so they had to take full fledged quad cores, ones that didn't perform on par to be a 955BE, and purposely gimp them to fill the demand.
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swehunt

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#8 swehunt
Member since 2008 • 3637 Posts

*Buying a dualcore (broken quad) and try revert it to old glory, can't make it stable?!.*

So, where would you wan't us to provide help?, buying you a quad? :D

The 550 is a great dual, if you were intrerested in a quad you would have brougth yourself a real quadcore who compleated the extencive testing AMD did when making it.

Make no mistake, all dualcore taken from the quadcore line have faults on atleast one of the core's this IS why one or two cores were disabled to begin with, if you can live with the faults that AMD did not wan't to sell it with it's your buissines but do never exspect to unlock a crippled CPU to the full glory of the chip it was intended to be, some can be run but with minor faults, your seems like it had a larger fault.

Just feel happy that you got what you payed for, instead of wanting to win the lottery. :)

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freakisgood

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#9 freakisgood
Member since 2007 • 25 Posts

Make no mistake, all dualcore taken from the quadcore line have faults on atleast one of the core's this IS why one or two cores were disabled to begin with, if you can live with the faults that AMD did not wan't to sell it with it's your buissines but do never exspect to unlock a crippled CPU to the full glory of the chip it was intended to be, some can be run but with minor faults, your seems like it had a larger fault.

Just feel happy that you got what you payed for, instead of wanting to win the lottery. :)

swehunt

Not true at all the early Phenom 2 BE were all fully functional cores. I know I have one. There were not enough faulty cores to produce the mass supply they need at the time for their new dual cores. Its a fact that AMD disabled the cores to meet the demand of the market at start, but now its highly unlikely that all four are stable. I have unlocked the cores from day 1 and all four have no faults at all.

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Daytona_178

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#10 Daytona_178
Member since 2005 • 14962 Posts

What motherboard are you using? I know with Asus motherboards they auto check the cores to see if they work properly and then re-disable it if it doesent work.

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SPBoss

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#11 SPBoss
Member since 2009 • 3746 Posts

My motherboard is in my sig lol. I wasn't expecting it to unlock I bought it as a dual-core it would of been nice if it worked though, a lot of people had luck with a 550BE unlocking to 4 cores and running at 3.5ghz. Im happy with my overclock of 3.9 though, tight ram clocks aswell :)