Unlocking core #4 on Phenom II x3 720

welly321 · Apr 20, 2011, 12:48 AM

I have a foxconn A79A-s. Is it possible to unlock the fourth core on a phenom II x3 720? and how would I do it?

erocker · Apr 20, 2011, 12:58 AM

Only if the motherboard has the option to unlock it in the bios. If it isn't there, your board won't do it. Even if the option is there, there's always the chance it won't unlock anyways.

Bo$$ · Apr 20, 2011, 09:31 AM

Quote:

The A7DA-S 3.0 will unlock the BE 550 to an x4. I did it, and here's the boot recipe I used:

P03 BIOS (no longer on Foxconn site, so use rogue images at your own risk)

ACC "Auto"

HT 1600 MHz

CPU voltage +150mV (will try lower - dunno what's with CPU-Z in the photos - the voltage isn't that high)

After boot, use OverDrive to tweak up. I've tried mild overclocking (16.5x on CPU) but I haven't pushed it. It's stable on the AMD stability test for an hour.

P04 and P05 BIOS appear to have the ACC core unlock feature disabled. I haven't rigorously retried these because I am so ecstatic having a 3.1GHz quad core that I haven't redone all the flashing yet.

Taken from xtremesystems

Zyon · Apr 20, 2011, 09:38 AM

To unlock AMD CPUs (that can be unlocked) go to the BIOS (when you turn on computer keep pressing delete until you see some boxes with pretty red blue colour and yellow texts), and find the 'Advanced Clock Calibration' option and change it to 'Auto' (try other options if it doesn't work), usually under Overclock Settings/Advanced Settings or similar names (Can't remember what my AsRock board had).

If it goes to blue screen at any point then it's probably unstable, try increasing voltage on the CPU and north bridge (although it could be dangerous, so add little at a time and try).

Best of luck making your CPU shine even more.

Bo$$ · Apr 20, 2011, 09:46 AM

Quote:

Might get it working on the A79A-S

If I set ACC options in BIOS Per core all 4 cores show up. However Auto or All they do not

Going to play with it a bit and see what I can come up with.

More info
here is the link:http://www.overclockers.com/forums/a.../t-609024.html

btw zyon, those Leadman echostar PSU's are probabily the best ever made!

welly321 · Apr 20, 2011, 01:26 PM

Well ive tried acc on auto and i tried pretty much every set of acc settings. No luck so far.
The 4th core just doesnt show up. Maybe ill try updating the bios. Thank you guys for your help.

brandonwh64 · Apr 20, 2011, 01:31 PM

Maybe a non unlockable chip

Bo$$ · Apr 20, 2011, 01:57 PM

Quote:

Originally Posted by brandonwh64

Maybe a non unlockable chip

yeah, that is one thing, there is no guarantee that the chip will unlock

welly321 · Apr 20, 2011, 03:21 PM

Well ive had the chip running for 2 years now at 3.4 ghz so i guess i can live with 3 cores.

ivicagmc · Sep 12, 2011, 06:54 PM

In other not to start a new tread with same title I will post here. Having issues when I unlock 4th core on my PII X3 720. He need a little more juice to be stable on 3GHz (0,05V), and he is perfectly stable under load. Problem is when it goes in idle state and CnC turns on. Getting some weird artifacts and sound doesn't work very well. It appears that he need little more juice in lower P states. How can I fix that, besides turning of CnC? My computer works 24/7, so any power savings are welcome... Also, is 68C (CPU) and 60C(cores) to high?

brandonwh64 · Sep 12, 2011, 06:56 PM

You may have to just leave CNC off 24/7,

erocker · Sep 12, 2011, 07:08 PM

Quote:

Originally Posted by ivicagmc

In other not to start a new tread with same title I will post here. Having issues when I unlock 4th core on my PII X3 720. He need a little more juice to be stable on 3GHz (0,05V), and he is perfectly stable under load. Problem is when it goes in idle state and CnC turns on. Getting some weird artifacts and sound doesn't work very well. It appears that he need little more juice in lower P states. How can I fix that, besides turning of CnC? My computer works 24/7, so any power savings are welcome... Also, is 68C (CPU) and 60C(cores) to high?

There is no setting for voltage at low power state. The 4th core is unstable. Also, 60c cores is too high.

ivicagmc · Sep 12, 2011, 07:11 PM

So, there is no other way??? Hell.....

I just live it the way it is, 3 cores on 3.4GHz...

Jstn7477 · Sep 12, 2011, 07:13 PM

You can probably try PhenomMsrTweaker to assign CPU and CPU/NB voltages to different multipliers. I use it to undervolt my mobile Phenom II X920 45w processor into a 35w one so my notebook doesn't fry.

catnipkiller · Sep 21, 2011, 07:28 PM

I have the same chip and same mobo. No luck with the 4th core its now sitting in my htpc and the msi mobo has ACC as well. Its not a 4xcore i don't think. but iv had it hit 3.9ghz and 3.85 stable

JrRacinFan · Sep 21, 2011, 07:37 PM

Their are very slim chances that x3 will unlock. On my own 720 that came from a decent batch it still doesn't unlock.

Frick · Sep 21, 2011, 07:40 PM

The first Athlon X3 I had (455) unlocked both a core and level 3 cache. The one I have now only a core, and all I had to do was to push F4 during POST and it automagically did it by itself.

brandonwh64 · Sep 21, 2011, 08:23 PM

I had a 720 that would unlock and OC to 3.8ghz full quad!

Apr 20, 2011, 12:48 AM	#1
welly321 Join Date: Mar 2009 Location: Pittsfield, Massachusetts Posts: 90 (0.06/day) Thanks: 9 Thanked 5 Times in 5 Posts System Specs	Unlocking core #4 on Phenom II x3 720 I have a foxconn A79A-s. Is it possible to unlock the fourth core on a phenom II x3 720? and how would I do it?

System Name:	Gaming rig
Processor:	AMD Phenom II 720x3 at 3.4 ghz
Motherboard:	Foxconn A79A-S
Cooling:	Corsair
Memory:	OCZ Fatal1ty Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
Video Card:	MSI twin frozr II 6870 1 gb
Hard Disk:	Western Digital Caviar SE 320GB 7200 RPM SATA 3.0Gb/s
Optical Drive:	LITE-ON 22X DVD Burner Black SATA
CRT/LCD Model:	26" Asus 1080p
Case:	COOLER MASTER 690 with 1 extra 120mm exhaust fan blowing out the top.
Sound Card:	Asus xonar dg with sennheiser 515
PSU:	COOLER MASTER UCP RS700-AAAAA3 700W
Software:	Windows 7 Ultimate
Benchmarks:	3dmark11 : 4011 points on performance

Processor:	Intel i7 3770K @ 4.6ghz 1.256v
Motherboard:	Asus Maximus V Formula
Cooling:	Water
Memory:	2x4gb Patriot Viper 2133mhz 10-11-10-25 2T 1.55v
Video Card:	Sapphire HD 7970 1125/1575 1.14v
Hard Disk:	Crucial M4 128Gb / Corsair Force 3 120Gb / Samsung 240Gb / 2Tb Seagate
Optical Drive:	None
CRT/LCD Model:	Acheiva Shimian 27" IPS 2560x1440
Case:	Corsair 500R White
Sound Card:	Onboard
PSU:	NZXT Hale90 1Kw
Software:	Windows 8 x64

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Video Card:	Gigabyte GTX 570 WindforceX3 OC \| 2x MSI Twin Frozr III 6950
Hard Disk:	2x WD5001AALS RAID 0 \| Western Digital 500GB Caviar Blue
Optical Drive:	22x Samsung DVD +/-RW/W \| 20x LG DVD +/-RW/W
CRT/LCD Model:	Asus VE276Q
Case:	NZXT M59 \| CM 690 II
Sound Card:	Creative Audigy 2 w/Otone Stilo 5.1 and Creative Fatal1ty headset
PSU:	ThermalTake Toughpower 850w \| Cheiftec A135 850w
Software:	Windows 7 SP1 X64 \| Windows Server 2008 R2 SP1

System Name:	Computernamehere/Computernamehere2/Computernamehere3
Processor:	i5-2500/Athlon 6000+/C2D Q6700
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Cooling:	Stock/Hyper212+/Unknown Coolermaster
Memory:	Patriot PC3-10666 2x2/A-Data PC2-6400 4x1/OCZ PC2-8500 4x1
Video Card:	MSI GTX580 Lightning/2x Gigabyte GTS450 OC 1GB/2x HIS HD4870 512MB
Hard Disk:	Seagate 1TB/Samsung 500GB/Seagate 1TB
Optical Drive:	WTF is an optical drive?
CRT/LCD Model:	Samsung BX2440
Case:	V4 Black/Mystique 631 Silver/Soprano VX
Sound Card:	WTF is a sound card?
PSU:	Corsair HX650/Antec Earthwatts 650W Green/None
Software:	Windows 7 Home/Professional/Professional
Benchmarks:	TBA

Apr 20, 2011, 12:58 AM	#2
erocker Senior Moderator Join Date: Jul 2006 Location: Milwaukee, WI. Posts: 31,958 (12.78/day) Thanks: 2,793 Thanked 12,320 Times in 7,832 Posts System Specs	Only if the motherboard has the option to unlock it in the bios. If it isn't there, your board won't do it. Even if the option is there, there's always the chance it won't unlock anyways.

Apr 20, 2011, 09:38 AM	#4
Zyon Join Date: Mar 2011 Location: Australia Posts: 246 (0.31/day) Thanks: 6 Thanked 31 Times in 28 Posts System Specs	To unlock AMD CPUs (that can be unlocked) go to the BIOS (when you turn on computer keep pressing delete until you see some boxes with pretty red blue colour and yellow texts), and find the 'Advanced Clock Calibration' option and change it to 'Auto' (try other options if it doesn't work), usually under Overclock Settings/Advanced Settings or similar names (Can't remember what my AsRock board had). If it goes to blue screen at any point then it's probably unstable, try increasing voltage on the CPU and north bridge (although it could be dangerous, so add little at a time and try). Best of luck making your CPU shine even more. __________________ Leadman Echostar 680W - A special kind of suck SHAW = Shit-House AC Wattage

Apr 20, 2011, 01:26 PM	#6
welly321 Join Date: Mar 2009 Location: Pittsfield, Massachusetts Posts: 90 (0.06/day) Thanks: 9 Thanked 5 Times in 5 Posts System Specs	Well ive tried acc on auto and i tried pretty much every set of acc settings. No luck so far. The 4th core just doesnt show up. Maybe ill try updating the bios. Thank you guys for your help.

Apr 20, 2011, 01:31 PM	#7
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,569 (10.00/day) Thanks: 2,149 Thanked 5,342 Times in 3,697 Posts System Specs	Maybe a non unlockable chip __________________ Cruncher's: All GPU's GPU's: 7970 3GB Unlocked = 8 Threads 5770 1GB OCed = 2 Threads

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Apr 20, 2011, 03:21 PM	#9
welly321 Join Date: Mar 2009 Location: Pittsfield, Massachusetts Posts: 90 (0.06/day) Thanks: 9 Thanked 5 Times in 5 Posts System Specs	Well ive had the chip running for 2 years now at 3.4 ghz so i guess i can live with 3 cores.

Sep 12, 2011, 06:54 PM	#10
ivicagmc Join Date: Mar 2010 Posts: 166 (0.14/day) Thanks: 38 Thanked 31 Times in 25 Posts System Specs	In other not to start a new tread with same title I will post here. Having issues when I unlock 4th core on my PII X3 720. He need a little more juice to be stable on 3GHz (0,05V), and he is perfectly stable under load. Problem is when it goes in idle state and CnC turns on. Getting some weird artifacts and sound doesn't work very well. It appears that he need little more juice in lower P states. How can I fix that, besides turning of CnC? My computer works 24/7, so any power savings are welcome... Also, is 68C (CPU) and 60C(cores) to high?

System Name:	Zverkica
Processor:	Phenom X3 720 3.4GHz SB 2.4GHz
Motherboard:	Gigabyte GA-870A-USB3L AM3+
Cooling:	OCZ Vanquisher
Memory:	2x4 GB Patriot 1600MHz CR1
Video Card:	Sapphire 5770 900/1300MHz
Hard Disk:	WD 3200AAKS, WD 1002FAEX
Optical Drive:	ASUS DRW-24B1ST
CRT/LCD Model:	Dell U2312HM eIPS
Case:	Chieftec BX-02B-B-SL
PSU:	Chieftec CFT-600-14CS 600W MODULAR
Software:	Windows 7 Pro

Sep 12, 2011, 06:56 PM	#11
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,569 (10.00/day) Thanks: 2,149 Thanked 5,342 Times in 3,697 Posts System Specs	You may have to just leave CNC off 24/7, __________________ Cruncher's: All GPU's GPU's: 7970 3GB Unlocked = 8 Threads 5770 1GB OCed = 2 Threads

Sep 12, 2011, 07:11 PM	#13
ivicagmc Join Date: Mar 2010 Posts: 166 (0.14/day) Thanks: 38 Thanked 31 Times in 25 Posts System Specs	So, there is no other way??? Hell..... I just live it the way it is, 3 cores on 3.4GHz...

Sep 12, 2011, 07:13 PM	#14
Jstn7477 Join Date: Aug 2009 Location: Sarasota, Florida, USA Posts: 3,143 (2.30/day) Thanks: 389 Thanked 1,193 Times in 805 Posts System Specs	You can probably try PhenomMsrTweaker to assign CPU and CPU/NB voltages to different multipliers. I use it to undervolt my mobile Phenom II X920 45w processor into a 35w one so my notebook doesn't fry. __________________ Intel Crunchers (27 threads): 2x 3770K 4.3G (14t), 2600K 4G (7t), X3210 (3t), P-M 735A, P4 HT 3G AMD Crunchers (11 cores):1100T 3.6G (3t), 1045T 3.4G (2t), X3 8550 2.5G, X2 4200+, T64 ML-37 AMD Folders (6272 GCN cores): 2x 7950 1125/1475, 7970 1150/1650, 7770 1100/1200 NV Folders (2336 GF10x + 1344 GK104 cores):GTX 470 & 465 720/1715, 4x 460 768MB 825/2000, GTS 450, 660Ti 1228/6000 HEATWARE

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Motherboard:	ASRock Z77 Extreme6 \| NWQAE S1G4 (880G/SB850) \| Gigabyte E350N-USB3
Cooling:	Thermaltake Water 2.0 Performer, 2x Cougar CF-V12HB + 5 Rosewill RFA-120-RL
Memory:	G.Skill RJ-X 16GB DDR3-2000 CL11 \| Stock 2*2GB DDR3-1066 CL7 \| 4GB DDR3-1333
Video Card:	XFX DD HD7950 3GB 1175/1500 1.2v w/ Accelero Xtreme 7970 \| ATI MR 5650 1GB DDR3 @ 550/900 \| 6310 IGP
Hard Disk:	Mushkin Chronos 240GB + Seagate Green 2TB \| WD Scorpio Black 750GB \| Samsung F1 1TB
Optical Drive:	ASUS 24x SATA \| Sony Optiarc AD-7703S 8x Labelflash \| Samsung Writemaster 22x SATA
CRT/LCD Model:	ASUS VG236HE 23" 120Hz 1080p \| 16.0" 1366*768 LED laptop glossy LCD \| Samsung 940BW
Case:	NZXT Source 210 \| Toshiba A665D \| Rosewill MI-01-BK ITX "shoebox"
Sound Card:	Realtek ALC898 \| Realtek ALC269 with harman/kardon speakers \| Realtek ALC892
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Software:	Windows 7 Pro x64 + Ubuntu 12.10 \| Windows 8 Pro x64 (laptop)
Benchmarks:	120FPS in the games I play? :P

Sep 21, 2011, 07:28 PM	#15
catnipkiller Join Date: Apr 2010 Location: canada Posts: 1,059 (0.93/day) Thanks: 340 Thanked 474 Times in 326 Posts System Specs	I have the same chip and same mobo. No luck with the 4th core its now sitting in my htpc and the msi mobo has ACC as well. Its not a 4xcore i don't think. but iv had it hit 3.9ghz and 3.85 stable __________________ MyHeatWare My FS/FT

System Name:	INTEL/AMD
Processor:	I7 920@3.8GHZ / 1100T@3.8GHZ(on air)
Motherboard:	ASROCK Extream x58 / GIGABYTE GA-990FXA-UD3
Cooling:	Rasa 450 RS120 with dcc pump / zalmen 9900 cooler
Memory:	2x4 gb 1600 / 4x4gb 1600
Video Card:	XFX 7950 DD / XFX 5750
Hard Disk:	2xcorsair ssd 120gb raid0 /2x adata ssd 120gb
Optical Drive:	lg
CRT/LCD Model:	50 inch plasma / 22inch acer
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Sound Card:	ASUS xomar DGX
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Sep 21, 2011, 07:37 PM	#16
JrRacinFan Served 5k and counting ... Join Date: Mar 2007 Location: Youngstown, OH Posts: 16,121 (7.13/day) Thanks: 4,149 Thanked 4,552 Times in 4,027 Posts System Specs	Their are very slim chances that x3 will unlock. On my own 720 that came from a decent batch it still doesn't unlock. __________________ Graphics Artists United™ Request Thread Low Cache CPU Club Solaris Utility DVD 3.0 DanishDevil's Logitech Soundroom TPU Video Gallery Sciencemark Revisited

System Name:	Mine; Hers; Our HTPC; NAS Box
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PSU:	Tt 750W Modular : Antec 500W Earthwatts : Corsair CX430 : Dell's OEM

Sep 21, 2011, 07:40 PM	#17
Frick Fishfaced Nincompoop Join Date: Feb 2006 Location: Sweden Posts: 7,901 (2.99/day) Thanks: 1,076 Thanked 1,449 Times in 1,155 Posts System Specs	The first Athlon X3 I had (455) unlocked both a core and level 3 cache. The one I have now only a core, and all I had to do was to push F4 during POST and it automagically did it by itself. __________________ Typemachine: Acer Aspire One D250 \| Atom N280 1.6 Ghz \| 1GB DDR2 \| 160GB SATA \| 10.1' 1024 x 600 \| Lubuntu 12.10 Oldbox: HP D530 \| Pentium 4 2.8 Ghz \| 1GB DDR \| 40GB \| Windows XP "The 'gentle biker' look is overdone. I'm going for 'psycho hillbilly.' "

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Sep 21, 2011, 08:23 PM	#18
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,569 (10.00/day) Thanks: 2,149 Thanked 5,342 Times in 3,697 Posts System Specs	I had a 720 that would unlock and OC to 3.8ghz full quad! __________________ Cruncher's: All GPU's GPU's: 7970 3GB Unlocked = 8 Threads 5770 1GB OCed = 2 Threads

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