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Phenom II X2 555 BE - What % now unlock to 4 cores? - Page 2

post #11 of 45
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Quote:
Originally Posted by dcyli View Post
Get a mobo with more than 4+1 power phases
http://www.overclock.net/amd-motherb...l#post12462681

The explanation can be read here, it is highly recommended to read it because it involves the higher TDP that is associated with unlocking the x2.
http://www.overclock.net/amd-cpus/94...hy-choose.html

You will also need a new cpu cooler if you are successful in unlocking and want to overclock the hell out of it. The reason is that the stock cooler is only designed for the x2 which has a lower TDP than the x4.


tl/dr; I would go with the ATX if you have the chance.
Good info to know. Thanks again.
    
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post #12 of 45
Quote:
Originally Posted by Castaa View Post
Good info to know. Thanks again.
Good luck if you decide to go with it!
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post #13 of 45
only got 3 cores to work with my cousins. i suspect a cheap board. also with the dead temp sensor i dont feel like overvolting to get the 4th to work.
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post #14 of 45
There is no percentage. There's really no way to tell what chips unlock or not until you try; any actual defective vs. fully functional cores percentage would be highly variable per stepping & production process. Phenom II x2 is designed so that some of those random chips which are quad cores but have defects are binned and resold as duals, but there's no way to tell any percentage of which are defective and which are not. It's a statistic that is completely random and cannot be told.
/thread

Also unlocking on the GA-MA78LMT-S2 is a very bad idea as it is a cheap 3+1 with known problems
post #15 of 45
not that giga 760g. its a low end board and would blow unlocking due to its cheap 3+1 phrases layout.
     
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post #16 of 45
Is there any way of getting the core temps with it unlocked to 4 cores. Not trying to still the tread but could not find anything really. Also mine unlocked all four cores and over clock so easy with my mobo i thought i knew what i was doing.
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post #17 of 45
the diode 'breaks' when its an x4,but the cpu temp is still accurate
my x2 555 unlocks and is perfectly stable so far....for the price you pay,its a little gem.
even if it doesnt unlock stable,clock the wheels off it as a dualie and you wont regret it
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post #18 of 45
Quote:
Originally Posted by lp75220 View Post
Is there any way of getting the core temps with it unlocked to 4 cores. Not trying to still the tread but could not find anything really. Also mine unlocked all four cores and over clock so easy with my mobo i thought i knew what i was doing.
You'll have to use the socket temp sensor which is TMPIN0 I think in hwmonitor.

First check your temps as an x2 and compare your core temps to the socket temp. The socket temp, as you will see, is approximately 2 -5 degrees hotter.

So with this offset in mind, when you unlock and overclock check your TMPIN0 temps and subtract 2 - 5 degrees. The value you get is approximately what your core temps are.
Edited by dcyli - 3/29/11 at 2:12pm
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post #19 of 45
Mine wouldn't unlock the 4th core but I have it running as an X3 @3.8Ghz, and it ran Prime95 stable (let it run for ~20 hrs) and temps at load stay in the mid 40's.
post #20 of 45
My 555BE is a little gem, unlocked to quad at stock volts, and has run up to 4GHz stably as a quad, and 4.2 as a dualy. It's down to luck, some have defective cores, some are sold as duals to make up the numbers, they're all built as quads.
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