ga-ma770t-ud3p and Phenom II 550 BE unlocking experience

Markfw

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So I got a ga-ma770t-ud3p, and a Athlon 245 regor and a 550 BE. I want to test both of them, and every talks about enableing ACC in Bios I can;t find it for the life of me, and I even googled for the solution. This may be a bad bios version ? I can;t see it on bootup. (too fast).

Edit: SEE Below. No unlock here !
 
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Markfw

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I needed the F5 bios. Now what do I set the other "thing" to ? hybrid or normal ? on the 245 under normal, it has a setting -2%. but in XP, just 2 cores.
 
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VirtualLarry

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I didn't think that you could unlock cores on the dual-core Athlon II chips. Aren't they just dual-core dies? The only exception was the AM2 X2 5000, recent model, that was a castrated quad.
 

Hyperlite

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May 25, 2004
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I didn't think that you could unlock cores on the dual-core Athlon II chips. Aren't they just dual-core dies? The only exception was the AM2 X2 5000, recent model, that was a castrated quad.

Correct. Regor vs Propus. I believe, and opposite to the current phenom situation, some of the first Athlon II's all used the same die, but that isn't the case anymore. The newer phenoms are actually more likely to unlock, however.

mark, set it to hybrid, and set ACC core control to "Auto." that should do the trick for unlocking the 550, and i guess potentially the Regor if it's an old one.

An aside, but i tried the F5 bios on my board a few days ago and it caused massive instability and hdd corruption. i went back to F3....though i think you need at least F4 for core control. If you see anything wonky, don't rule out the bios.
 
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Mir96TA

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ACC.jpg
 

Markfw

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Yup, I found a post before you guys replied. Set it to that with F5, won't even post. I have a 79% chance of it working, and I lost....Batch 0951 something.

Unless you guys have more ideas ??
 

Hyperlite

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May 25, 2004
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Yup, I found a post before you guys replied. Set it to that with F5, won't even post. I have a 79% chance of it working, and I lost....Batch 0951 something.

Unless you guys have more ideas ??

the Athlon II or the 550? Also...if the 710 bios' are parallel across different motherboards, i think there should be another set of options below those, titled literally "Core Control." There is in F4 and F5 on the UD2H. Did you see this thread mark? he talks specifically about the Core Control settings in the OP, and is using a UD3P.

Edit: so i guess it's possible in any bios revision since F3, but you have to use F5d to get the "Core Control" feature...which, frankly, i'm not sure the purpose of.
 
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Drakula

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Agreed with what VirtualLarry and Hyperlite said. Athlon II X2 cannot be unlocked to quad core. I forgot where see that before, but they use the die with only two cores, unlike the Phenom II X2 ones. If you got Athlon II X3, however, it might be possible to unlock to quad since that is the one with a disabled core. The Athlon II X3 and X4 are also possible to unlock additional L3 cache, but there seems to be some specific batches.

As for Phenom II X2 550 BE, check out this guide also at Overclock.net, they have more detailed information. Good luck!
 

Drakula

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Yeah i didn't/haven't had any luck with my L3. :(

Sorry to hear that. I heard that if your stepping is CADAC or something, it is not possible to unlock. Found this link of Athlon II X4 where L3 can be unlocked or not, probably would apply to X3's too seeing how they are just X4 with a disabled core.

You need a C in the middle of your stepping to be able to get L3, because it is Deneb core. CADAC have D in the middle, so it is Propus core. Details are all explained in at the page.

Reminds me of the good old Athlon days where everyone is seeking AxHA and AXIA steppings.:D
 
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Markfw

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Motherboard is ga-ma770t-ud3p, F5 bios. Current CPU is 550 BE 0951 something stepping. No go on unlocking anything. (so far)

But I got it working (not tested stable) at 3.8
 
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spinejam

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Feb 17, 2005
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after setting to "hybid" and "all cores" give the 550be some voltage -- ~1.40 and see if she boots as a B50 cpu.

my cpu (cayce 0940) unlocked and is stable at 3.817Mhz w/ 1.488 cpu-z reading, but it needed juice to boot as a quad.

gl :)
 

Markfw

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OK. so I read all the guides you guys posted (thanks), and nb abd sb at 1.26, vcore@1.4 and tried a multi of 10 (2 ghz). Still no boot with acc/hybrid.

But then I just left all else alone(except acc off), and changed the multi to 20, and 4 ghz. Now to test for stability !

With a (supposedly) 79% chance of unlocking, I sure got unlucky !!!!!
 

Markfw

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Are there any ideas I have NOT tried ????
 

heyheybooboo

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It's kinda tedious but as a last resort you can experiment with the ACC and individual cores.

In the ACC sub-menu select 'Per Core' ...
GIg785g-BIOS-ACC_0.jpg


You may then experiment by upping the ACC value of the weak cores, and even disabling a single core to create an 'X3' ...
GIg785g-BIOS-ACC_1.jpg


There is no truth to the rumor that 'Core2' is the weaker core on a Phenom, though sometimes it just happens to work out that way.

This is the Gigabyte 785g with F7 BIOS.




--
 

Markfw

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heyheybooboo, thanks for that !!!!

But my gigbyte bios doesn't allow for disabling any of the cores.....

I have tried f2,f3,f4,f5,f6a, and I tried +12% on all 4, then on just 2 and 3, no change.
 

Markfw

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Update: It won't do 3.8 even at 1.4 vcore, plus other voltages, but it will do 3.6 on stock vcore (1.3) Very odd. That all I am getting out of this POS.
 

lopri

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Jul 27, 2002
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Hehe. I think the statistics are quite exaggerated. I suppose more success stories have been reported than failure stories. I bought an AII X3 425 for someone else's build, which I was going to tinker with unlocking. It unlocked only in the BIOS. Didn't expect a miracle, to be honest.
 
Dec 30, 2004
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Update: It won't do 3.8 even at 1.4 vcore, plus other voltages, but it will do 3.6 on stock vcore (1.3) Very odd. That all I am getting out of this POS.

You must have a C2 and be running 64bit.

64bit is a killer for the C2s for some reason, mine won't go past 3.5Ghz no matter how much voltage I give it, but it's great at 3.5 with 1.44v. Other people with C2s in 32bit seemed to be able to hit 3.8 much more reliably.

I figured "Why not just kill it these things are so cheap anyways" so I threw the voltage up to 1.55 to see what I could get it but it made no difference once I got to ~63-64C.
 

Markfw

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May 16, 2002
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You must have a C2 and be running 64bit.

64bit is a killer for the C2s for some reason, mine won't go past 3.5Ghz no matter how much voltage I give it, but it's great at 3.5 with 1.44v. Other people with C2s in 32bit seemed to be able to hit 3.8 much more reliably.

I figured "Why not just kill it these things are so cheap anyways" so I threw the voltage up to 1.55 to see what I could get it but it made no difference once I got to ~63-64C.
well its an 0951 week, and I am using win XP 32 bit.

Don't know about the C2. Where would I find that ? cpuz ? (not as good with AMD cpus these days)
 

formulav8

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Sep 18, 2000
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The 550's should all be C2's. The 555's are the C3 steppings I think. Like others has said, there is a wall using 64bit oses trying to get past 3.8ghz. In 32bit many can get past the wonderful 4ghz mark with good cooling. C3's are getting 4.0-4.1ghz in 64bit mode in a few reviews, but for some reason the c2's doesn't do it to often...

My theory is that for some reason or another when the extra 64bit based registers kick in it somehow limits the speed to 3.8ghz or less....

Still at 3.6-3.8 the cpu's are very fast and can easily play any game or watch any show or whatever out there. By no means is the cpu junk unless you specifically wanted a cheap quad. I have a x2 50000+ (2.2ghz stock) as a test cpu and couldn't get the thing to unlock either. But I can get the clocks up to 3.6-3.7ghz and its very fast at those speeds and easily rivals my main Core2 based rig @ 3.3ghz.

Anyways, I haven't messed with my 5000+ X2 in awhile and may see if I can get it to unlock again with another mobo I have....


Jason