AMD Phenom II X2 555 BE Unlock and Overclock on GA785GT-UD3H

[chaoscreater]

@gothicfighter, I recently purchased x2 555 BE just like yours, but i have a different motherboard. Do i need to get the exact same one as urs to unlock it?? From what i've researched, only certain motherboards can unlock the extra cores on certain AMD cpus, this is the case as well for the 7750 BE......

 

[gothicfighter]

What motherboard do you have?

 

[JDFan]

Lol.
..BUT...
The Power LED cable has a 3 pin connector(the middle one is empty) and the mobo has only a 2 pin connector for the LED. I guess I can live without the 2 lights but I'll really want to know if there is a way to get rid of the middle one.
If you know how to, please tell me.
Cheers.

You can move the wire from one of the outside connections into the empty middle position (the wires slide into the connector and snap into place but can be moved if you look at the connector you should be able to see how to remove the wire along with the sleeve so that you can then move it into the middle position and then use that to connect to your MOBO connector -- leaving it hanging over on the one side -- Or if you have any old parts you can find a 2 pin connector and then do the same to both wires removing them from the 3 pin and replacing them into a 2 pin connector !

If you do not have any 2 pin conectors then another option is using a dremel or exacto knife to cut the 3 pin into seperate 1 pin connections by cutting it apart and then just attach the 2 single pins to the proper connections !

 

[chaoscreater]

What motherboard do you have?

I haven't got one yet as my old one broke but i'll be getting the ECS GF2008A, or maybe the MSI 785G-E53.

edit:

ok nvm i did a lot of research and found that it seems only MSI boards have the ability to unlock hidden cores, in fact most of the decent MSI boards have those features BUILT RIGHT IN to them, as advertised on their specifications & features. Such as the 760GM-E51, MSI 785G-E53, MSI 870A-G54.

 

[lostinwallington]

Problem comes in when you are OCing using EXTRA VOLTAGES since CnQ will kick in and reduce the voltage and speed and then when you start stressing the system it will switch the speed back up to the OC value but will not always increase the voltage causing an unstable OC in some cases !!

well im sure the bios that the rig is using has profile managers there are 3 of them i think so what u do is get the best o/c u can with highest voltages needed for highest o/c save it as profile 1 then under clock everything and just use it for light duties,surfing and word processing, use the lowest volts u can on this under clock,save this as profile 2 and finally use the default / stock bios setting and save this as profile 3 this is then ideal for content streaming for example media extenders like the xbox to your telly other machines on your home network and recoding video and also for using your torrent client for downloading your files peer to peer, so there u have it in a nutshell a profile for each type of scenario...hope this helps as this really is the way to go to gain component longevity , heat dissipation and power regulations...if im wrong about the bios having this function then grab after burner from MSI's website and you can do it from there , that should keep you a very happy bunny indeed. cheers FrostByte Computers email is josephmccarron@hotmail.co.uk if you need advice on any hardware and software related issues.

 

[Domingo Chavez]

If you want to lower your temps a bit further dont be afraid to undervolt, I have 2 rigs 1 has a normal 955 undervolted to 1.325V and O.C'ed to 3.8Ghz with just multiplier changes everything is stable just gotta undervolt 1 increment at a time and test, i could go 1 lower but 2 would crash so I just played it safe and ended up at 1.325 V which lowered my temps about 8 C.

Then on my second rig i have an unlocked 555, all 4 cores working i might have gotten a really good chip cause i undervolted to 1.325V and O.C'ed to 3.5Ghz with just multipier changes. Im still pushing this sistem taking it 1 step at a time so it might O.C a bit more with this voltage.

To everyone thats having temps close to 60 C, try undervolting it wont harm your cpu like overvolting could and you can do it from overdrive.

If you want to give it a shot
-unlock and keep automatic settings.
-Lower voltage 1 increment at a time and run tests for a reasonable amount of time
-When you find your lowest stable voltage treshold, keep it there or go 1 increment up to play it safe.
-Now O.C push your multiplier 1 increment at a time and run tests
-When you find your highest stable multiplier treshold, keep it there or go 1 increment down to play it safe.

Good luck

 

[gothicfighter]

Well hello, I'm back.

Things have been running perfectly since my last posting here, though I did not OC my CPU (didn't really need it - until now). I plan on upgrading my GPU to a GTX770 and the CPU is definitely going to bottleneck it. Until I manage to change my mobo, then buy a new CPU(not happening in the near future), I want to OC my b55 which has been running at stock speeds since unboxing.

Here's where I am at right now:
-cool'n'quiet disabled
-c1e support disabled
-cpu multiplier set at 16.0x (so cpu speed is at the default 3200mhz)
-cpu temps don't go above 45* while in prime95

From what I read, now I'm supposed to increase the multiplier by one unit, run prime95, repeat until I get a crash, increase the voltage then rinse and repeat until I get to my targeted cpu frequency. Now

1) When do I stop?
2) How high can I push the voltage without breaking something?

Thanks.

LE: Do I leave System Voltage Control to Auto for now or set it manually myself? (BIOS seems to take care of the voltage anyway when OC'in : "Warning: Voltages may be raised for optimizing overclock" - but then I wouldn't know how far to go with the voltage when manually adjusting it)

e2: Right now it's at 3.5GHz and prime95 has been running for almost an hour - CPU temp still under 45, everything's looking good.

e3: 3.6Ghz, 1.35V, stable. Will post screens after a couple hours of prime95.

 

[gothicfighter]

Here it is:

I'm amazed it's stable at 1.35V, wonder how high will it go.