Why the proc same but can't unlock the 4th core one? ><
Successsss List :
cloudwan AMD Phenom II X2 720BE 0904EPQW | Mobo : GIGABYTE MA770T-UD3P | BIOS F2
cloudwan AMD Phenom II X2 720BE 0904EPQW | Mobo : BIOSTAR TA790GX-128M | BIOS 080014
boland89 AMD Phenom II X2 720BE 0904EPQW | Mobo : msi 790FX-GD70


Failed List :
cloudwan AMD Phenom II X2 720BE 0904EPQW | Mobo : MSI DKA790GX Platinum

fundamental of amd core unlocking
u must have..
1-sb750/710 for 700series.. core unlocking feature for 800series, and NVACC for nvidia chipset..
2- motherboard that capable of it..some motherboard quite picky..
2- bios that capable of it..latest bios will do now..
3- quite healthy core hidden..

er..anything i missed out?

ASUS M477TD PRO+AMD Phenom II 555=Success to unlock 3rd and 4th core..

lyn sifu...i was wondering is my pc spec can be be oced? i wanna oc unlock my cpu 550BE..i m using GA.ma790gpds4h(f6)..n a cmv8 cooler...

edited, wrong place posted, sorry.

This post has been edited by selferino: May 23 2010, 03:03 PM

hello..

i am using ASUS M4A77TD PRO , AMD Phenom II X3 720

but i cannot unlock it into 4core..
anybody can help me??

you follow the right steps?
unleash mode?

i already following the right steps
1. i activate the ACC function
2. then unleashing mode
3. then i choose 4 core operation

wehn i exit the CMOS, it fail to start windows..

whats my hardware problem??
motherboard that not support or my CPU cannot support 4 core??

This post has been edited by lockmunk: May 26 2010, 11:17 AM

did u try increase voltage a bit.. but be warn dont increase too much!

i also increase voltage...it can increse 500mV n 100mV
i choose 50mV..also not work

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Added on May 27, 2010, 1:36 pmbased on ZPU-Z,my CPU names is AMD Phenom II X3 720
it not state that is BLACK EDITION
are this is the causes why i can't unlock to 4 core??

This post has been edited by lockmunk: May 27 2010, 01:36 PM

no... even AMD 710 can unlock depend on batch!.. maybe ur 720 cant unlock.. not the right batch!

yeah maybe u get a wrong batch to unlocking a 4th core but u have nothing to lose man..unlock 4th core also not very save if u using normal cpu cooling coz it will disable the core temp..just try luck in OCing..

This post has been edited by angrysnail: May 28 2010, 11:43 AM

MSI 770 C45 BIOS 1.6
AMD Phenom X2 555BE
3Gb Kingston DDR1333
Silverstone SST400

Fail. Can't unlock 4 cores.
When I enable to choose cores. Only able to select 2 cores.
So, how am I going to unlock the third?

Btw, how to update the MSI motherboard via windows? I don't have floopy disk ...

This post has been edited by Amedion: May 29 2010, 10:43 AM

use usb drive to flash bios......

Flashed to latest official bios v1.9 ....
Enable the Core Unlocking & ACC at 0% on all cores ...
Can boot but also 2 cores running only... Sad..

You have bad core i suppose..but there's still chance..try playing with the ACC value

Yeap. Right now play with overclocking first.
Unlocking very troublesome & there's alot of values to play with. Somemore got 4 cores to adjust. Everytime fail need to reset cmos.

My Spec:
Phenom II X2 555BE (stock hsf <<== will change to CM hyper 212+ next month)
kingston DDR1333 ram (will get another stick next month)
Asus M4A785TD-V Evo (Bios ver: 2005)
MSI X1300 Pro 256 PCI-E (got it free from friend, no playing games so tis gc enough already)
160GB hitachi sata hdd (old hdd)
Coolermaster 750W GX series PSU
Old CoolerMaster mid tower casing
Win 7 Ultimate 64bit

Successfully unlock to 4 cores
bios setting:
ACC mode enable
unleashing Mode auto
CnQ disable
C1E disable
voltage auto (but it'll automatically went up to 1.3750V-1.39V sometime, so i manually set the voltage to 1.3125V)
multiplier set to 17x (O/C to 3400Mhz, stable with Prime95 running for 12hours)
tried set multiplier higher than 17x but running Prime95 for half hour the system auto reboot.

room temp 24C, cpu temp with full load 45C-47C
room without air con just ceiling fan, cpu temp with full load 56C-58C

I have a phenom ii x3 710
motherboard asus m4a77td pro, bios version 2005(latest)
this is my setting:

Advance clock calibration - All Core
Unleashing Mode - Enable
Active CPU Core - Auto

no need to increase vcore whatsoever if u just need the 4th core.

actualy increase of vcore is not for every cpu need is depend how healty is the 4th core or the unlock core..