X2 550 Unlocking & Overclocking Consolidated

[ASharp]

Unlock as normal in BIOS by enabling ACC. This will unlock the other two cores to make it a quad. In the case that the last core is unstable, you can use the Processor Downcore feature of your motherboard (assuming it has this option) in your BIOS. It is here where you can set it to run at just three, two, or even one core.

[jameskelsey]

Unlock as normal in BIOS by enabling ACC. This will unlock the other two cores to make it a quad. In the case that the last core is unstable, you can use the Processor Downcore feature of your motherboard (assuming it has this option) in your BIOS. It is here where you can set it to run at just three, two, or even one core.

Thanks for the info.

[MacClipper]

Yes, Downcore is a very impt BIOS option when playing with Phenom unlocking - it's a 50% performance jump betw. 2 and 3 cores in case you can't get all 4 cores stable. But not all makers offer this option in the BIOS, luckily my Biostar does.

[Rezag1000]

It seems as if I am running into a bit of a wall with my unlocked 550.

let me start of by listing my stable OC thus far:
Gigabyte 790X UD4P

CPU 17x200= 3400mhz
Vcore=1.35V

CPU NB @ 2200mhz
CPU NB VID @ 1.2V

everything else at stock

to become stable at 3500mhz, I need to bump up my vcore to 1.40V. Unfortunately, 1.4V only gets me to 3500mhz, 3600 is unstable (even with CPU NB VID @ 1.3V)

I understand that 1.4 vcore is not a lot, but with only having a thermaltake silent boost on my 550 and not being able to read temps on my unlocked CPU, I'd rather not go beyond 1.4V. In fact, if I need only 1.35V at 3400MHZ, that is where I am going to leave it - I dont think 100mhz is worth increasing vcore my .05.

What do you guys think? Any suggestions on how to go beyond 3400mhz? Unfortunately, I think I've hit my chip's limits with the voltages that I am willing to give it. I think I am going to have to call it quits at 3400mhz.

BTW, how much additional heat would you guys estimate is added when the two additional cores are unlocked? I suppose I might be able to extrapolate my unlocked temps by checking my temps when running just the two original cores.

[Daveburt714]

What do you guys think? Any suggestions on how to go beyond 3400mhz? Unfortunately, I think I've hit my chip's limits with the voltages that I am willing to give it. I think I am going to have to call it quits at 3400mhz.

If it helps any, use CPUID HWMonitor, even on unlocked chips "TMPIN1" gives a pretty accurate temp for the core on the UD4P boards... As long as you can keep that temp <53c under load you should be OK.

I don't want to advise you to push harder than you feel comfortable with, but if you want to try for more, keep an eye on TMPIN1 and try these options:

1) Add .100v to the CPU-NB vid (I run mine at +.175)
2) Add .100v to the NB(chipset) and SB. This should put them @ 1.2/1.3v respectively..
3) Add .150 to the CPUcore (mine is @ +.250)

On the Vcore, 1.4v (+.100v) is actually pretty low with good cooling (watch TMPIN1 though )

CPU-Z shows my Vcore @ 1.52 (I think it's +.250)

Don't push harder than you feel comfortable with, but you asked for suggestions so I thought I would offer fairly safe options...

Keep an eye on HWMonitor though, at least on my machine sustained temps greater than 55c usually results in a crash.

[Rezag1000]

If it helps any, use CPUID HWMonitor, even on unlocked chips "TMPIN1" gives a pretty accurate temp for the core on the UD4P boards... As long as you can keep that temp <53c under load you should be OK.

I don't want to advise you to push harder than you feel comfortable with, but if you want to try for more, keep an eye on TMPIN1 and try these options:

1) Add .100v to the CPU-NB vid (I run mine at +.175)
2) Add .100v to the NB(chipset) and SB. This should put them @ 1.2/1.3v respectively..
3) Add .150 to the CPUcore (mine is @ +.250)

On the Vcore, 1.4v (+.100v) is actually pretty low with good cooling (watch TMPIN1 though )

CPU-Z shows my Vcore @ 1.52 (I think it's +.250)

Don't push harder than you feel comfortable with, but you asked for suggestions so I thought I would offer fairly safe options...

Keep an eye on HWMonitor though, at least on my machine sustained temps greater than 55c usually results in a crash.

Thank you very much for the suggestions!

I am a bit weary of of what TMPIN1 actually is though. At my stable OC, TMPIN1 reads 77C after running prime for a few hours. If this temperature was accurate, my system would surly hang, no?

I just have the feeling that all the temps get a little wacky when a CPU is unlocked, at least that is the feeling I have on my own board.

[Seth-01]

Thank you very much for the suggestions!

I am a bit weary of of what TMPIN1 actually is though. At my stable OC, TMPIN1 reads 77C after running prime for a few hours. If this temperature was accurate, my system would surly hang, no?

I just have the feeling that all the temps get a little wacky when a CPU is unlocked, at least that is the feeling I have on my own board.

Hi !

on my Gigabyte GA-MA790GP-UD4H i have (to my mind)

TMPIN0 is Northbride
TMPIN1 is Mosfets because i have more than 70° in full load
TMPIN2 is CPU.

When i lock my X2 550BE, TMPIN2 is the same as core temps. Wish this can help you

[Rezag1000]

Hi !

on my Gigabyte GA-MA790GP-UD4H i have (to my mind)

TMPIN0 is Northbride
TMPIN1 is Mosfets because i have more than 70° in full load
TMPIN2 is CPU.

When i lock my X2 550BE, TMPIN2 is the same as core temps. Wish this can help you

I've tried that little experiment as well, and unfortunately I get different results.

49C is the max I get with 2 cores....I wonder how much heat unlocking the other two cores adds? I suppose it is best that I invest in a new heatsink.

[Dopamin3]

0919EPMW - Dopamin3 - MSI 790FX-GD70 - 1.5b3 - Success
prime95 stable for 3 hour, you can add this to list.

[Seth-01]

I've tried that little experiment as well, and unfortunately I get different results.

49C is the max I get with 2 cores....I wonder how much heat unlocking the other two cores adds? I suppose it is best that I invest in a new heatsink.

I'll buy the Thermalright True Black to cool my X..2 euhh... 4

With an ambiant temp of 29° in my room and a zalman 9700, my 0919 EPMW gets between 50° and 55°. Vcore is 1.47v and 3737 MHz but not stable OCCT (bsod 0x00000124)

[Daveburt714]

I am a bit weary of of what TMPIN1 actually is though. At my stable OC, TMPIN1 reads 77C after running prime for a few hours. If this temperature was accurate, my system would surly hang, no?

I just have the feeling that all the temps get a little wacky when a CPU is unlocked, at least that is the feeling I have on my own board.

WOW! Yes, the CPU would shut down at those temps..

I'm sure PIN1 is the CPU temp on my board MA790XT-UD4P (guess I just assumed they would be the same). The easiest way to get an idea of which one is the CPU is to run a stress progam and see which one goes up the fastest and also drops the fastest when it goes back to idle. Thats what I watched and PIN1 was the answer, just to verify I dropped some ice cubes in my resivour, let it sit for a minute, and that temp dropped to sub ambient...

AFAIK temps get screwy on all boards when unlocking, so it's not just you..

Are you using the box cooler that came with your 550? If so, you may want to consider an aftermarket option.

Hope this helps a little....... Dave

[ELItheICEman]

0915FPMW - ELItheICEman - GA-MA790X-UD4P - F5 - Success - Link

[luismenendez]

Hi !

on my Gigabyte GA-MA790GP-UD4H i have (to my mind)

TMPIN0 is Northbride
TMPIN1 is Mosfets because i have more than 70° in full load
TMPIN2 is CPU.

When i lock my X2 550BE, TMPIN2 is the same as core temps. Wish this can help you

Are u sure TMPIN1 is mosfets? I though it was the SB (called SYS in my mobo's Hardware Monitor software). On my BIO TA790G which is infamous for mosfets running very hot that value is always around 31C which is very low!

[Seth-01]

Are u sure TMPIN1 is mosfets? I though it was the SB (called SYS in my mobo's Hardware Monitor software). On my BIO TA790G which is infamous for mosfets running very hot that value is always around 31C which is very low!

Not sure at 100% but when i stress the CPU, TMPIN0 stay at 35/40° but TMPIN1 & 2 raise very fast and i can see TMPIN1 goes to 77° and TMPIN2 goes 50-55°

But to be sure, i've locked the Phenom2 so i can have the core temps and then TMPIN2 is the same as the two cores temps. Quad core stress more mosfets than Dual Core. This can help me to say but, not at 100%, that TMPIN1 can be the mosfets !

[tuanvu_lk]

0925APWM I have tested 5 CPU, success 1 4 fail :|

[Seth-01]

Are u sure TMPIN1 is mosfets? I though it was the SB (called SYS in my mobo's Hardware Monitor software). On my BIO TA790G which is infamous for mosfets running very hot that value is always around 31C which is very low!

Hi everybody !

i've made a little test : lock my X2 550 BE to have core temps and see wich TMPIN can be the core temp. Here are my results in idle and full with fritz benchmark :

[Snowman89]

Just got mine and tried it, 0924DPMW. It locks up when loading vista with hybrid on and acc set to auto any ideas?

[Seth-01]

Just got mine and tried it, 0924DPMW. It locks up when loading vista with hybrid on and acc set to auto any ideas?

what's the vcore ? try in increase it to 1.40 or 1.45v

[Snowman89]

what's the vcore ? try in increase it to 1.40 or 1.45v

No change

Although i tried some more, it locks up loading vista as soon as i put on "hybrid", even if a have acc to off it does that. So is it bios related or?

[Seth-01]

No change

Although i tried some more, it locks up loading vista as soon as i put on "hybrid", even if a have acc to off it does that. So is it bios related or?

what's your mobo ? tlas try : enable ACC with hybrid mode but set the ht link to 1800 or 1600 instead of 2000. Wish you good luck

[Snowman89]

what's your mobo ? tlas try : enable ACC with hybrid mode but set the ht link to 1800 or 1600 instead of 2000. Wish you good luck

790XT-UD4P with F4I bios. So hybrid mode on and try the settings you said?

[Seth-01]

790XT-UD4P with F4I bios. So hybrid mode on and try the settings you said?

yes ! try this settings. Don't forget : Hybrid mode ON et ACC set to "Auto" but at first set the HT Link to 1800 or 1600.

[Snowman89]

yes ! try this settings. Don't forget : Hybrid mode ON et ACC set to "Auto" but at first set the HT Link to 1800 or 1600.

Still no luck Any more advice?

[DerBöseWolf]

MSI 770-C45:

http://valid.canardpc.com/show_oc.php?id=629860

Where can i see which stepping my CPU has?

[gOtVoltage]

what's the vcore ? try in increase it to 1.40 or 1.45v

try with stock HT/NB @ 2000 and kepp CPUvore stock and use NBvid @1.2v...


This should get you stable to boot ,, you may even have a ram problem or videocard driver problem if its crashing right in the Windows XP/Vista screen...


If its a Blue BSOD see what the BSOD says and go from there. IF its driver related try in safe mode and reinstall what ever driver was creating the problem.

If using 1066 divider try the 800... Sometimes a Bios can set wrong timing in 1066mode vs 800 and you can raise the HTT if you need more than 800 on the ram.

Make shure your using the Best Bios. Ive seen some be real buggy on the XT. The F4 i think was best ,im not 100% shure though.