Phenom II 720 4th core unlock

WojtasRed · Apr 21, 2009

How can I unlock 4th core? All I know, I must buy MoBo with SB750 to do that. But what`s next?

ShadowFold · Apr 21, 2009

You need the right batch of CPU too, but it's still a 50/50 chance it will unlock. If you do get all of the correct batches, board bios etc then just set ACC(advanced clock calibration) to 0% on all cores or auto.

WojtasRed · Apr 21, 2009

Do I need Mobo with SB750 or maybe also with SB700 will be fine to unlock 4th core?

ShadowFold · Apr 21, 2009

SB700 doesn't have ACC. Only SB710 and SB750 do right now. But that still doesn't mean the bios can unlock it.

WojtasRed · Apr 21, 2009

What do you mean saying `right batch `?

ShadowFold · Apr 21, 2009

on the CPU, it has to have the 0904 batch code to unlock. Some older ones with 08XX do too but they aren't stable.

Neo4 · Apr 21, 2009

WojtasRed said:
Do I need Mobo with SB750 or maybe also with SB700 will be fine to unlock 4th core?

Only some mobo's are guaranteed to work (Biostar and Asrock support this bug) and getting a CPU that unlocks is luck of the draw. Go to Tom's Hardware and read their recent article on "unlocking" and you'll have a better idea of what's happening.

WojtasRed · Apr 21, 2009

But if batch code is 08XX, even Biostar and Asrock don`t guarantee succes, right? How can I check my CPU`s code?

ShadowFold · Apr 21, 2009

Yup.. I really hope you don't buy a 720 and expect a quad core, it's very luck based and even if you get a 4th core 720, there's still the chance of it not being stable.

WojtasRed · Apr 21, 2009

How can I check my CPU`s code?

alucasa · Apr 21, 2009

If you mean CPU batch code, it's on IHS, I think, and also on the box.

WojtasRed · Apr 21, 2009

What`s IHS?

alucasa · Apr 21, 2009

The small square heatsink that's attached on CPU core.

1Kurgan1 · Apr 21, 2009

This should give you a better idea to look for 0904

And BTW that one doesn't unlock even being a 0904, tried on 2 boards.

WojtasRed · Apr 21, 2009

So which MoBo could you suggest me for this Phenom II, I wanna sth better than my MoBo, but nothing expensive.

ShadowFold · Apr 21, 2009

The MSI DKA790GX is cheap and very good. Not sure if you live in the US or not, but here's a link
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130191
Highly recommend it

WojtasRed · Apr 21, 2009

Wanna sth without integrated VGA, plz

ShadowFold · Apr 21, 2009

Then you're gonna have to spend top dollar for a 790FX.. What's wrong with having onboard graphics? Saved my butt a few times, they make great backup cards.

WojtasRed · Apr 21, 2009

Right

Or maybe it`s pointless to change MoBo in that case?

alucasa · Apr 21, 2009

If you are buying one just to be able to unlock the 4th core, then no. It's not worth it.

n-ster · Apr 21, 2009

agreed about not changing mobo... unless your mobo doesn't give you something you want (example xfire capability or something of the sort)...

I you do still want to change, I highly recommend this one

1Kurgan1 · Apr 22, 2009

Actually there are starting to be some cheaper 790FX boards popping up. Here is the cheapest 790FX with the SB750.

http://www1.picturepush.com/photo/a/1551714/800/Computer/PII-720-BE-0904-batch.jpg

And I found this the other day, it actually looks like a steal of a deal, but it's only SB600, but a $99 790FX! And it has full metal caps, normally you just don't see that in that price range.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813153129

But you got a nice board, I really wouldn't swap it out at a chance to get the 4th core, odds are not in your favor.

WojtasRed · Apr 26, 2009

What about Biostar TA790GX with SB750?

n-ster · Apr 26, 2009

that's a really good mobo that'll unlock very well.... that's the one I recommended

Neo4 · Apr 26, 2009

WojtasRed said:
What about Biostar TA790GX with SB750?

That's the board I use and it unlocks my 4th core quite well although it doesn't have a cooler on the MOSFET's. I bought a Thermalright unit for about $25 and it works fine.

Processor	AMD Phenom II 720 3x2,8 GHz BE
Motherboard	MSI 870A Fuzion A770 SAM3
Cooling	Scythe Zipang SCZP-1000
Memory	Crucial 4GB DDR3 1600MHz Ballistix Sport CL9
Video Card(s)	PALIT GeForce GTX 560Ti 1GB
Storage	TOSHIBA 1000GB 32MB 3,5'' 7200 SATA III
Display(s)	Gateway FPD2275W `22
Case	Shinobi SH09A
Power Supply	Thermaltake Toughpower W0116 750W
Software	Windows 7 Ultimate 64bit

System Name	The ShadowFold Draconis (Ordering soon)
Processor	AMD Phenom II X6 1055T 2.8ghz
Motherboard	ASUS M4A87TD EVO AM3 AMD 870
Cooling	Stock
Memory	Kingston ValueRAM 4GB DDR3-1333
Video Card(s)	XFX ATi Radeon HD 5850 1gb
Storage	Western Digital 640gb
Display(s)	Acer 21.5" 5ms Full HD 1920x1080P
Case	Antec Nine-Hundred
Audio Device(s)	Onboard + Creative "Fatal1ty" Headset
Power Supply	Antec Earthwatts 650w
Software	Windows 7 Home Premium 64bit
Benchmark Scores	-❶-❸-❸-❼-

Processor	AMD Phenom II 720 3x2,8 GHz BE
Motherboard	MSI 870A Fuzion A770 SAM3
Cooling	Scythe Zipang SCZP-1000
Memory	Crucial 4GB DDR3 1600MHz Ballistix Sport CL9
Video Card(s)	PALIT GeForce GTX 560Ti 1GB
Storage	TOSHIBA 1000GB 32MB 3,5'' 7200 SATA III
Display(s)	Gateway FPD2275W `22
Case	Shinobi SH09A
Power Supply	Thermaltake Toughpower W0116 750W
Software	Windows 7 Ultimate 64bit

System Name	The ShadowFold Draconis (Ordering soon)
Processor	AMD Phenom II X6 1055T 2.8ghz
Motherboard	ASUS M4A87TD EVO AM3 AMD 870
Cooling	Stock
Memory	Kingston ValueRAM 4GB DDR3-1333
Video Card(s)	XFX ATi Radeon HD 5850 1gb
Storage	Western Digital 640gb
Display(s)	Acer 21.5" 5ms Full HD 1920x1080P
Case	Antec Nine-Hundred
Audio Device(s)	Onboard + Creative "Fatal1ty" Headset
Power Supply	Antec Earthwatts 650w
Software	Windows 7 Home Premium 64bit
Benchmark Scores	-❶-❸-❸-❼-

Processor	AMD Phenom II 720 3x2,8 GHz BE
Motherboard	MSI 870A Fuzion A770 SAM3
Cooling	Scythe Zipang SCZP-1000
Memory	Crucial 4GB DDR3 1600MHz Ballistix Sport CL9
Video Card(s)	PALIT GeForce GTX 560Ti 1GB
Storage	TOSHIBA 1000GB 32MB 3,5'' 7200 SATA III
Display(s)	Gateway FPD2275W `22
Case	Shinobi SH09A
Power Supply	Thermaltake Toughpower W0116 750W
Software	Windows 7 Ultimate 64bit

Phenom II 720 4th core unlock

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System Name	Game Box
Processor	AMD FX 8120
Motherboard	ASrock Fatal1ty 990FX Professional
Cooling	Zalman CMPS 9900 MAX (red LED)
Memory	Mushkin DDR3 1600 (1.35v)
Video Card(s)	Powercolor Radeon HD6970
Storage	Crucial RealSSD C300 (64X2 gig RAID 0) & Seagate 1 TB
Display(s)	ASUS 22" 1920x1080
Case	CoolerMaster Storm Enforcer
Audio Device(s)	Soundblaster X-Fi Gamer PCI
Power Supply	Cooler Master Real Power Pro 850W
Software	Windows 7 Professional X64

System Name	My Comp \| Fiancees Comp
Processor	i7 5820k @ 4.6Ghz 1.285v\| i5 2500k
Motherboard	MSI x99 SLI Plus \| AsRock Z77 Pro 3
Cooling	Watercooled
Memory	16GB DDR4 2400 @ 2666 \| 12GB DDR3 1600
Video Card(s)	AMD R9 290x \| MSI 5850 OC
Storage	128gb SSD + 2x 2TB \| 2TB
Display(s)	Asus 27" LCD \| 25" Hanns G
Case	CM Storm \| CM Elite 430
Audio Device(s)	Creative Recon 3D PCIe
Power Supply	Enermax Galaxy 1250W \| Rosewill 630w
Mouse	Logitech G700s \| Logitech G100s
Keyboard	Logitech G901 \| Logitech G105
Software	Win 8.1 Ultimate x64 \| Win 8.1 Ultimate x64
Benchmark Scores	3D Mark - Fire Strike Extreme - 4403

System Name	Homelabs
Processor	Ryzen 5900x \| Ryzen 1920X
Motherboard	Asus ProArt x570 Creator \| AsRock X399 fatal1ty gaming
Cooling	Silent Loop 2 280mm \| Dark Rock Pro TR4
Memory	128GB (4x32gb) DDR4 3600Mhz \| 128GB (8x16GB) DDR4 2933Mhz
Video Card(s)	EVGA RTX 3080 \| ASUS Strix GTX 970
Storage	Optane 900p + NVMe \| Optane 900p + 8TB SATA SSDs + 48TB HDDs
Display(s)	Alienware AW3423dw QD-OLED \| HP Omen 32 1440p
Case	be quiet! Dark Base Pro 900 rev 2 \| be quiet! Silent Base 800
Power Supply	Corsair RM750x + sleeved cables\| EVGA P2 750W
Mouse	Razer Viper Ultimate (still has buttons on the right side, crucial as I'm a southpaw)
Keyboard	Razer Huntsman Elite, Pro Type \| Logitech G915 TKL