AMD Phenom II X3 720 Unlock

[Steve_L]

Good day all,

I recently purchased a new system for gaming et cetera, and decided to go with the AMD P2 X3 BE. After a bit of use, I figured I'd attempt to unlock the fourth core and see what happens. Luckily I didn't have my hopes up too high, because it crashed at the login screen. I then attempted to isolate the 'bad core', but without any luck. Here's what I tried:

ACC: Auto, Per Core
Unleashing: Enabled (when on Per Core: [ [0,1,2], [0,1,3], All Cores ] were attempted)

With either core2 or core3 enabled, or if all 4 cores are enabled, the system crashes regardless at the login screen. I get a BSOD message:

"A clock interrupt was not received on a secondary processor within the allocated time interval."

I haven't tried messing around with any voltages, and am only slightly overclocked. So I'm wondering, does this mean that either core0 or core1 is dysfunctional, or am I doing something wrong?

PC Specs
MB: ASUS M4A79XTD EVO
CPU: AMD Phenom II X3 720 BE
MEM: 4GB OCZ DDR3 PC3-10666 / 1333 MHz
VID: ASUS ATI Radeon 4890 1GB GDDR5
HDD: Seagate Barracuda 7200.11 SATA 1TB
PSU: OCZ GameXtreme 650W

 

[OvrClkr]

Yea, well 3 cores is still the sweet spot for most tasks =)

I was lucky enough to unlock my x2 550be to an x4 B50 :

temps are also in the high 20's at idle and low 40's at LOAD.....

 

[Steve_L]

Yeah, I'm debating whether or not to buy a 550 and attempt to return it if it doesn't unlock.

Those are some retarded good temps by the way, at that clock. What cooler are you using?

EDIT: Nevermind, I found your spec page ^^ Personally, I've been looking at getting the CM V8, looks epic and apparently works relatively well.

 

[OvrClkr]

Yeah, I'm debating whether or not to buy a 550 and attempt to return it if it doesn't unlock.

Those are some retarded good temps by the way, at that clock. What cooler are you using?

EDIT: Nevermind, I found your spec page ^^ I've been looking at getting the CM V8, looks epic.

Titan Fenir (xmas edition) with MX-2 :

Temps at 3.8Ghz LOAD :

Idle :

 

[OvrClkr]

The V8 is a nice cooler, more on the flashy side... If you have a window it will look great, if not get a 212+ or CCF =)

 

[mosserock]

i have the same mobo and processor and i selected auto under advanced clock calibration and then select enable for the uleash mode and restart with the latest bios i believe its 0605 and walah i got a quad core and it runs stable at 3600 mhz and probly faster also

 

[Truhls]

Im actually running the same board and CPU, luckily mine unlocked just fine. I havent oced yet, waiting on the new case + HSF. I undervolted mine to 1.22v when i unlocked the CPU, but recently had to up it to 1.3v for Mass Effect 2, i kept bsodding for some reason in mass effect 2, but prime ran for 30+ hours without a bsod at 1.22v lol. Sometimes pcs are just finicky if you ask me 😛

 

[mosserock]

i just reset my settings to there defaults and ulocked the 4th core its weird being back at 2800mhz. i dont suggest overclocking past 3600 much its pointless if u ask me 800 mhz overclock is enough , i hate how im limited even though i have great cooling and the rest is great 2 ...it should run faster if u ask me.