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X3 720 Failed Unlock

post #1 of 5
Thread Starter 
Hello,
First of all i know not all X3 720 BE unlocks successfully and even if it did; the 4th core might be unstable and/or defective (I'm aware of this), BUT i was wondering if my problem was a something else, maybe someone could help me successfully unlock it !

Mobo : Gigabyte MA770T UD3P (F2c Bios)
CPU Stepping: 0909 CPMW (C2)

I've read so many guides reporting successfully unlocked X3's on that mobo specifically on that bios (F2c), I've also read that the "CPMW" stepping unlocks successfully.

Tweaks I've tried:
- Setting EC Firmware to "Hybrid" and ACC to "Auto" on stock speed and voltage, but the PC won't even post.
- Changed the ACC to "All Cores", no post
- Changed the ACC to "Per Core" @ -2% and 0%, still no post
- Overclocked the CPU @ 1.45 vCore @ 3.5 GHz, and set to "Auto" the PC locked-up wouldn't even shutdown to restart.

Can i test each core individually like booting as dual core or 1 core and selecting which core i want to boot on and test it ?!

What do you recommend ?

It's kind of frustrating as the "CPMW" CPU's unlocks and mine won't with the right mobo/bios,
I currently have it OCed to 3.5GHz as a tri-core but would like to unlock it if its possible and the 4th core is stable.
Thanks.
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Leopard 2.3
(15 items)
 
  
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X3 720 BE @ 3.5GHz Gigabyte MA770T UD3P Sapphire Tri-X R9 390X OC 2x 4GB 1600 
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Seagate Western Digital Thermaltake FrioOCK Windows 10 64-Bit 
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post #2 of 5
Have you tried stock clocks @ higher voltage? I'm not really sure why you would try overclocking it with an unlocked core when you haven't gotten it successfully unlocked yet @ stock settings? Generally a core is locked because it won't run at the voltage settings that AMD wants it to during product testing. If it cannot run stable @ stock clocks with a bump in voltage, then it most likely isn't going to run at all.

Again, not sure why you're "frustrated", an unlocked core is simply a bonus and should only be looked at that way. I'm not sure you're going to see any performance difference with 4 cores @ 2.8ghz vs. 3 @ 3.5ghz except in thread heavy applications possibly.
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post
Have you tried stock clocks @ higher voltage? I'm not really sure why you would try overclocking it with an unlocked core when you haven't gotten it successfully unlocked yet @ stock settings?
I thought the OC with the extra voltage might give the extra core a kick.
But yes your right I'm going to try stock speeds with higher voltage .. what max voltage do you think is OK before assuming its unstable ?

Quote:
Originally Posted by appleg33k85 View Post
Again, not sure why you're "frustrated", an unlocked core is simply a bonus and should only be looked at that way. I'm not sure you're going to see any performance difference with 4 cores @ 2.8ghz vs. 3 @ 3.5ghz except in thread heavy applications possibly.
I'm aware of this as i said first thing in the topic, i said "frustrated" as the CPU stepping has been reported to be successfully unlocked yet it doesn't i thought it might be my bios but that has been reported successful as-well.

Thanks for the input
Leopard 2.3
(15 items)
 
  
CPUMotherboardGraphicsRAM
X3 720 BE @ 3.5GHz Gigabyte MA770T UD3P Sapphire Tri-X R9 390X OC 2x 4GB 1600 
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Seagate Western Digital Thermaltake FrioOCK Windows 10 64-Bit 
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Leopard 2.3
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CPUMotherboardGraphicsRAM
X3 720 BE @ 3.5GHz Gigabyte MA770T UD3P Sapphire Tri-X R9 390X OC 2x 4GB 1600 
Hard DriveHard DriveCoolingOS
Seagate Western Digital Thermaltake FrioOCK Windows 10 64-Bit 
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Samsung SyncMaster SA300 (1600x900) LED Razer Arctosa Corsair VS650w Cooler Master 
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post #4 of 5
Quote:
Originally Posted by Xive View Post
I thought the OC with the extra voltage might give the extra core a kick.
But yes your right I'm going to try stock speeds with higher voltage .. what max voltage do you think is OK before assuming its unstable ?


I'm aware of this as i said first thing in the topic, i said "frustrated" as the CPU stepping has been reported to be successfully unlocked yet it doesn't i thought it might be my bios but that has been reported successful as-well.

Thanks for the input
The chip's stepping has little to with a successful core unlock, it's more of a "Luck of the draw" deal.
Maybe those with this stepping have had alot of success but it's still based on the cores themselves being capable. A defective core is a defective core and no stepping can change that.
Could be chips with that stepping had a string of "Good" 4th cores during this time of manufacture and that may explain the high success rate with it.
What you posted as the stepping isn't - You've posted the date of manufacture and batch info but that is relevant to unlocking.

Your stepping is right before that info, for example my chip's stepping being CACZC AC and it's date being 0904DPMW. Note that my chip will not unlock at all just as your chip seems to be.
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post #5 of 5
not sure if this will help or not but when i had my old motherboard (ECS A780GM-A Ultra) if i turned on the core unlock setting in the BIOS it would lock up or BSOD on boot. so what i did was disable the setting and save and exit the BIOS (DO NOT POWER DOWN) and that left the core unlocked (glitch maybe?) and it was perfectly stable and i even overclocked to 2.86GHz. give it a try might work and might not.
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