Tom's Hardware > Forum > CPU & Components > CPUs > [Solved] Amd x2 550BE
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pratkal   09-26-2009 at 10:24:55 PM

k my friend got an amd x2 550BE which he wana unlock to quad core he got the lucky batch no. everything is fine but only 1 problem the mobo he got is Asus m3a78-em i know there is NO AAC option in these mobo but is there n hack version of bios out there???

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Best answer from mindless728
no possible, it has to have the ACC option, which means different motherboard

@jimishtar you must be thinking of the Athlon II X2, the Phenom II X2 has two disabled cores (as the 550 is the Phenom II)
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welshmousepk   09-26-2009 at 11:54:22 PM

nope, without ACC you cannot attempt to unlock cores.

i have a 550 myself, and am purchasing a new mobo soon just so i can try this out.

some of the gigabyte boards are very cheap and support ACC/hybrid, so it may be worth picking up a new one.

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jimishtar   09-27-2009 at 03:23:15 AM

550 has only 2 cores. u cant unclock other cores.

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welshmousepk   09-27-2009 at 04:09:10 AM

this guy has no idea what he's talkling about.

perhaps research before posting?

yes, the 550 is the 955 with 2 cores disabled so it can be sold as a dual core. with the right motherboard and BIOS combo it is possible to unlock the additional cores for a fully functioning quad core. its not guaranteed, but the sucess rates have been very high.

see: http://www.overclock.net/amd-cpus/ [...] guide.html

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jimishtar   09-27-2009 at 09:56:31 AM

welshmousepk wrote :

this guy has no idea what he's talkling about.

perhaps research before posting?

yes, the 550 is the 955 with 2 cores disabled so it can be sold as a dual core. with the right motherboard and BIOS combo it is possible to unlock the additional cores for a fully functioning quad core. its not guaranteed, but the sucess rates have been very high.

see: http://www.overclock.net/amd-cpus/ [...] guide.html



yup, i have no idea what i am talking about :) lucky us, u are here :) good job :D

Reply to jimishtar
pratkal   09-27-2009 at 05:01:57 PM

i know it not guirented to unlock all 4 core of amd x2 550 but isit possible to try to unlock with a mobo without AAC option??

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mindless728   09-27-2009 at 05:05:34 PM
Best answer

no possible, it has to have the ACC option, which means different motherboard

@jimishtar you must be thinking of the Athlon II X2, the Phenom II X2 has two disabled cores (as the 550 is the Phenom II)

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obsidian86   09-27-2009 at 05:05:41 PM

only bout 20% of 550's are even remotely capable of an unlock, let alone a stable unlock wich is only 10%

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jimishtar   09-27-2009 at 05:11:02 PM

obsidian86 wrote :

only bout 20% of 550's are even remotely capable of an unlock, let alone a stable unlock wich is only 10%



exactly my point. why bother to tell how to unlock cores, when it will only cause more troubles.

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pratkal   09-27-2009 at 05:21:19 PM

k thx to all thx for the support

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