Saturday, April 25th 2009

Athlon X2 7750 BE Unlocked to Quad-Core

by
btarunr
 Discuss (109 Comments)
Earlier this year, a Korean source had pointed out an easy method to enable a fourth core on the Phenom II X3. This was made possible by the way AMD has been designing its triple-core and dual-core processors based on the K10 "Stars" architecture: by disabling one or two cores on the quad-core die. "Sloppy" BIOS coding lead to the Phenom II X3 anomaly. It looks like a somewhat similar mod enables not one, but two cores on the sub-$100 Athlon X2 7750 Black Edition. A Korean technology website GiggleHD.com has reported a successful unlock of two cores.

The method is similar to that of the Phenom II X3 unlock: using flaws in BIOS code to enable cores, by enabling the "Advanced Clock Calibration" feature in the BIOS setup. The OS, Windows XP SP3, was able to see the processor as a "AMD Phenom(tm) FX-7750", while CPU-Z reads the name string correctly and lists the core count as 4. The motherboard in use is an ASRock A790GX/128M.
Source: Gigglehd.com

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109 Comments on Athlon X2 7750 BE Unlocked to Quad-Core

#76
p_o_s_pc
F@H&WCG addict
anyone that has a Biostar board have any luck unlocking a 7750
Posted on Reply
#77
Lo0odak
I have same like u,790GXB,and 7750,i turn on ACC and nothing...I think that is fake,marketing trick to sell all 65nm in this series...:mad:
Posted on Reply
#79
Darknova
Lo0odakI have same like u,790GXB,and 7750,i turn on ACC and nothing...I think that is fake,marketing trick to sell all 65nm in this series...:mad:
The odds of it happening are slim. Doesn't mean it's a fake.
Posted on Reply
#80
kenkickr
When I received my 7750 about a month ago I noticed something strange about it. When I installed and was OC'ing the proc I noticed in the option to "Down Core" I could select 3,2,1. I thought that was pretty strange but never messed with it. Well today @ work I might play around with it, the proc you sucko's:laugh:
Posted on Reply
#81
Lo0odak
Well,whatever,ill be happy if that unlocking work,on some bios,some mainboard,or some like that,if anyone know anything,reply fast ...:cool:
Posted on Reply
#83
BlueDragonyx
kenkickrWhen I received my 7750 about a month ago I noticed something strange about it. When I installed and was OC'ing the proc I noticed in the option to "Down Core" I could select 3,2,1. I thought that was pretty strange but never messed with it. Well today @ work I might play around with it, the proc you sucko's:laugh:
Hello .

What's your Hardware system ?

I'm interesting to buy new CPU and looking for 7750 or Phenom II for my AM2+ Mobo.

but... if It's could unlock other cores... Why I have to pay more ?

Thank you. :) and everyone of you here.
Posted on Reply
#84
eidairaman1
The Exiled Airman
Blue Dragon, if you want a guaranteed quad-core, go for the quad-core, if you want to experiment without any guarantee you will have a perfectly good 4th core on a tri-core but save some money as well go for the 7750 BE. Bear in mind the work that may have to be done to get the tri-core working as a quad-core may cost near what the quad-core does without having to work on it. This is sort of like how the BE/XE CPUs are, they tend to have the highest clocks, but they are guaranteed to work at those Speeds on Stock Cooling, where it may cost you the same or more on the lower model CPUs due to having to get a motherboard,ram, cpu cooling that allows you to overclock and there is no guarantee you will get the results you are looking for.

The rest is up to you.
Posted on Reply
#85
BlueDragonyx
eidairaman1Blue Dragon, if you want a guaranteed quad-core, go for the quad-core, if you want to experiment without any guarantee you will have a perfectly good 4th core on a tri-core but save some money as well go for the 7750 BE. Bear in mind the work that may have to be done to get the tri-core working as a quad-core may cost near what the quad-core does without having to work on it. This is sort of like how the BE/XE CPUs are, they tend to have the highest clocks, but they are guaranteed to work at those Speeds on Stock Cooling, where it may cost you the same or more on the lower model CPUs due to having to get a motherboard,ram, cpu cooling that allows you to overclock and there is no guarantee you will get the results you are looking for.

The rest is up to you.
Well,Thank you for your kindly reply.

So, I would go to get the 810 for my AX78.

God bless you. :)
Posted on Reply
#86
jojoyo
BlueDragonyxWell,Thank you for your kindly reply.

So, I would go to get the 810 for my AX78.

God bless you. :)
Hey any good news guys?
Posted on Reply
#87
jlqrb
Well, my 7750 didn't go to quad. This has to be fake.
Posted on Reply
#88
Wile E
Power User
jlqrbWell, my 7750 didn't go to quad. This has to be fake.
Just because your didn't unlock, it doesn't mean it's fake. Although I am still skeptical.
Posted on Reply
#89
ShadowFold
They probably modded the bios since literally no one else has reported this.. I just wish someone would come out and mod ALL bios to enable these unlocks. I know my chip is unstable with the 4th core enabled, but others are.
Posted on Reply
#90
jlqrb
Wile EJust because your didn't unlock, it doesn't mean it's fake. Although I am still skeptical.
has anyone else got theirs to unlock ? I didn't mean to seem that if my can't none will but it just seems odd that no one else can replicate this.
Posted on Reply
#91
Darknova
ShadowFoldThey probably modded the bios since literally no one else has reported this.. I just wish someone would come out and mod ALL bios to enable these unlocks. I know my chip is unstable with the 4th core enabled, but others are.
If someone can tell me which module the ACC programming code is in I could possibly do it. Just modded my BIOS today, worked perfectly, in fact it's more stable than the stock BIOS lol.
I just couldn't find where the ACC code is *shrugs*
Posted on Reply
#92
p_o_s_pc
F@H&WCG addict
darknova YGPM
Posted on Reply
#93
BWG
Last night I purchased an Athlon X2 7750 with an ASRock A780GMH/128M. The ASRock boards are supposed to unlock it. I will report back either on Friday or Monday when I put it together.

I have been an ASUS guy all my life. I bought an ASRock board one time and it was DOA. The reviews have improved so I took a chance.
Posted on Reply
#94
p_o_s_pc
F@H&WCG addict
good luck BWG and welcome to TPU
sucks about the board.
btw i know the DOA board WASN'T a Asus but has anyone noticed that the reviews on the egg and places like that Asus has alot of reviews saying they are DOA more then alot of other boards and they even cost more then alot of other boards.not trying to flame asus because they do make some good boards
Posted on Reply
#95
BWG
I better fill out my profile. I am in Ohio too. I took a gamble on the board for 20 bucks open box. lol

Yep I have been noticing that. At first it was on most of them using VIA chipsets and now it has spread to all of the boards.

The one I built 5 years ago for my father had an Asus P4C800 Deluxe in it and it just died Saturday. So I am giving him my board and upgrading my computer.
Posted on Reply
#96
BWG
So far no luck unlocking the other 2 cores. The ACC module shows all 4 cores. But, only 2 are loaded in device manager. Still shows as a dual core.

I have to admit I am a novice when it comes to using this bios and utility. So, if you have some suggestions of settings to try let me know.
Posted on Reply
#97
kenkickr
I call BS on this. I get the same thing as you, ACC showing 4 cores but Win 7 still sees a dual core. I tried all bios 0502-0703 and same for each of these.

Are there any bios that are older than the one currently on your board?
Posted on Reply
#98
BWG
Damn, I updated the bios as soon as I installed it. Now I see the old bios was the trick.

I found this in the bios revision notes:

2. Update CPU code.

I will see if I am lucky enough to find the old version.
Posted on Reply
#99
BWG
Posted at the same time lol.
Posted on Reply
#100
kenkickr
Come on then, prove me wrong!:laugh:
Posted on Reply
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