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could not unlock ph ii x2 555 to ph ii x4 B55

post #1 of 12
Thread Starter 
HI , friends
I have to confess that i am new to overclocking

CONFIG:

mobo: ASUS m4a78lt-m le with last bios ( SB710 )
CPU: phenom ii x2 555 BE
cooling : cm 212 plus
power : corsair 400 watts

PROBLEM:

the inbuilt in bios core unlocker didn't work (show phIIB55 but freeze at win7 boot)

NEED:

please show me a way to unlock the 2 other cores reliably:
(core:-2%or 0% / vcore=?V /vnnb= ?v)

if someone has succeeded please show me values in bios

thanks in advance
post #2 of 12
You have to be aware that most cores won't unlock. Here's what you can try: Unlock them and downclock them and increase vcore
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1155 POWER
(16 items)
 
AMD Heater
(13 items)
 
 
CPUMotherboardGraphicsGraphics
i5 2500k 4,6Ghz Asus Maximus IV Extreme Palit GTX 560 Ti Sonic Gigabyte GTX 560 Ti Overclocked 
RAMHard DriveHard DriveCooling
8GB G.Skill Sniper 1886MHz Seagate 500GB and Samsung 500GB Samsung 840 SSD Corsair H50 
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Windows 7 Ultimate 64-bit BenQ XL2411Z Steelseries Merc Stealth Nox Apex 800w 
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AMD 955 BE Asus Crosshair Formula II nVidia GTX 260 Core 216 55nm Kingston DDR2 4GB 800Mhz 
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Western Digital 500GB Some cheap thing (at least it's black) Modded AMD Stock Cooler Windows 7 Home Premium 32-bit 
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Some Samsung. Corsair CX600 NZXT Tempest A4Tech X7 
Mouse Pad
Bundled Black Ops Mousepad lol 
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post #3 of 12
Quote:
Originally Posted by iZZ View Post
You have to be aware that most cores won't unlock. Here's what you can try: Unlock them and downclock them and increase vcore
If that does not work try to Unlock one core. If the 3rd core doesnt work then lock it back up and try the 4th core.
post #4 of 12
Thread Starter 
thanks for quick answers . to unlock cores i have to change -2% to 0% isn't it ?
and how much vcore by core ?
post #5 of 12
Thread Starter 
Quote:
Originally Posted by Chuckclc View Post
If that does not work try to Unlock one core. If the 3rd core doesnt work then lock it back up and try the 4th core.
i tried to put the 3 and 4 core on and of
1+2 works (of corse)
1+3 works untill windows 7 boot( i think it is a voltage problem)
1+4 doesn't work (seems core 4 not working)

if my analysis is correct help me for 1+2+3 vcore settings and those (-2% , 0%,+12% stuffs) thanks in advance
post #6 of 12
I think you are not the lucky type ,like i am
You won t make those 100% good ,playing with those values.Sooner or later you will loose the core while doing some heavy stuff.
   
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post #7 of 12
-1 for helpful post.

The best way to find out is to run prime 95 until one of the cores fail, once the dodgy core reveals it's self then start upping the ACC on that one(1) core and try again.

If another core fails and isn't the same one repeat step one.

If the same core fails again up the ACC another notch for the failed core, if that doesn't work then go for 3 cores.
If then it doesn't agree then it was locked for a reason.

Best of luck.
post #8 of 12
Thread Starter 
Quote:
Originally Posted by smash_mouth01 View Post
-1 for helpful post.

The best way to find out is to run prime 95 until one of the cores fail, once the dodgy core reveals it's self then start upping the ACC on that one(1) core and try again.

If another core fails and isn't the same one repeat step one.

If the same core fails again up the ACC another notch for the failed core, if that doesn't work then go for 3 cores.
If then it doesn't agree then it was locked for a reason.

Best of luck.
thanks ,
i am newbie. this prime 95 is it a pre or post boot soft ? does it run on win7?

i had just couple of questions:

1-when you unlock a core in acc and the bios boot works -> the core works
otherwise it is locked for good ?

2- after that if the os boots -> bingo otherwise you have to tweak vcore and other stuff am i in the right way ?

thanks in advance
post #9 of 12
Cores probably unstable... hey you can't guarantee unlocking
I don't recommend increasing voltage if unlocked, as unlocking cores alone puts significantly extra heat & power load to board which may result in some complications involving the VRMs - 3+1 phase design on that board
post #10 of 12
Quote:
Originally Posted by genin7 View Post
thanks ,
i am newbie. this prime 95 is it a pre or post boot soft ? does it run on win7?

i had just couple of questions:

1-when you unlock a core in acc and the bios boot works -> the core works
otherwise it is locked for good ?

2- after that if the os boots -> bingo otherwise you have to tweak vcore and other stuff am i in the right way ?

thanks in advance

Prime 95 is post boot, yes it does run in Win7.

1) No it's not unlocked for good, the process of unlocking is loading a particular firmware/ROM(thingy).

So once it's on it's on, once you switch it off then the CPU goes back to it's previous dual core or tri core state.

2) You may be able to get to OS but that is just half the story. The thing here is that more often than not an unlocked CPU is touchier than outright overclocking.
You may still need to alter ACC and CPU v just to allow it to boot at what would be considered it's stock clock.

So as long as you walk into this knowing that the odd's are about 70%/30% in the favor of unlocking, you may still be unlucky enough to get a CPU from that 30% that are genuinely locked because of defect.
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