X2 550 Unlocking & Overclocking Consolidated

[mäggäri]

Grinder: This gem I was talking about, is from the 29th week, as you could have seen in the pics I posted. But I'll let you know when I have time to test this, in a day or two.

[Ezekiell]

What is the cheapest unlocking board you can buy right now?

[CZ_the_DAY]

Ezekiell, IMHO the GA-MA785GM-US2H is one of the lowest priced unlockers i am aware of (<90 CAN$)... if one also considers total startup cost, this uses DDR2 ram and onboard video.
__________________

Grinder, just to clarify, "..Sometimes +.1 nb helps.....cpunb @2400 with 1.225 volts" both refer to nbVID not nbCORE? Elaborating on my overclocking results when I have a weak link such as a 4yr old 350watt PS may leave me open to criticism....so must upgrade ASAP. We are making progress just the same as 7-7-7-21-1T@240x6.666 ran a prime95 blended test error-free for 30mins - woohoo & Thanks for helping! A while back I used the same torture test to observe TDP(via 'TMPIN2') while leaving one core idle for a period of time - seeing a measurable difference in temp where it came to the unlocked cores. Someday if I get time i'll measure actual current feeding the CPU regulator socket to confirm a pattern. There would also be errors - only on these cores - starting around 3.3GHz. Being curious by nature, i would like to understand what exactly AMD's chipset does to each core with it's ACC tweak, including the mechanism behind unlocking. Well, maybe I should earn some PS money first

_______________________________
PII x2 550BE (now B50); 0921APAW @ 3.7/3.7/3.2/3.2 1.37v
GA-MA790XT-UD4P w/shipped F4 bios ; EC=Hybrid & ACC=auto
Gskill F3-12800CL7D-4GBRH (2Gx2) 7-7-7-21-1T@1600
Thermaltake V1 (lapped, big time)
Diamond HD4650 (w/better HSF)
350W (for now) PS

[Grinder]

Both

+.1 to the nb (790x chipset) seemed to help stabilize the memory a little.

I also determined how much cpunb (IMC on the processor) voltage I needed at 3.2 gig cpu for each cpunb speed, e.g. for me it was 1.025v for 2000 mhz, 1.125 for 2200, 1.175 for 2400, and 1.275 for 2600. I went as high as 1.375 trying to stabilize 2800 (1 hr OCCT) before deciding it wasn't worth it.

Having said that, when I started ramping up the cpu speed I found that turning down cpunb speed let me get a little higher, and that I had to add a little voltage to cpunb as well. That's why I'm at 1.225 cpunb at 2400, with 3.6 gig on 4 cores.

I'll probably play around with acc a bit, then test cores individually. If I don't give in to temptation and buy a C3

Glad to hear you made some progress. Good luck saving for the ps. I'm using a 4 year old ocz powerstream 520.

I like the ma790xt-ud4p for the money, it was $136 Cdn minus a $15 rebate. Plus tax

[ReKcOlNu]

0925APMW - I.nfraR.ed - Asus M3A78-T - 1403 - Success - Link

I think it's goot that someone updates the first post...I know it would cost some time, but...

It doesn't appear the OP is ever going to update it.

This page here is basically a copy of the unlocks in this thread (you've been added) and from a couple other forums.

[boomshine]

guys what do you think of batch 0931gpmw??? does it have high unlock chance?

[Jethro]

CACYC AC 0921FPMW is my stepping that unlocks 4 core crunching stable.

http://valid.canardpc.com/show_oc.php?id=800552

[I.nfraR.ed]

Validation of the 24/7 settings http://valid.canardpc.com/show_oc.php?id=812509

[vandiesel]

Has anybody found their cpu has started to degrade after unlock/overclock?

[OldBarzo]

Hi
Have MSI 770T-C45 Mobo and 550BE. (0925 CPMW)
I have tried to unlock and succeeded with Win XP Pro 64 and was able to play Crysis Vers 1.2 for over 2 hours, but when I rebooted the PC went into a reboot loop. I then tried to boot into Win 7 Home Premium and got the same.
I have tried unlocking at stock (3.1Ghz) and at OC 3.6 but no luck.
My board has the latest MSI bios 8.3. I tried upping the NB Vcore and the CPU but still no joy.
My specs:
Phenum II 550BE@3.6Ghz
MSI 770T-C45 Mobo
4Gb Corsair PC8500 @800 (will not stay stable @1066) DDR2
Radeon 5670 512Mb DDR3 Graphics
WD 500 Gb (Green) SATA2 HDD (Win 7 64 Premium Retail)
Samsung 160 Gb SATA2 HDD (Win XP Pro 64)
LG GGC20L BD/HD-DVD Rom/DVD rewriter
Coolermaster Extreme 550W PSU
Coolermaster Elite 340 Case with 2 x 120mm case fans.

Any help greatly appreciated.

OldBarzo
(Douglas)

[casper222]

Hi everyone.
New poster here.
550BE 0925 CPMW
Ga-MA770T-UD3P
failed with bios F3 and F2
machine posts fine, but locks up on Windows 7 loading screen
I also have an 0926 BPMW has anyone seen anything on this stepping?

[Tenkura]

Be 550 >>> Tri core with new bios.

0920GPMW - Tenkura - ASUS M4A78-E - 1708 - TRI Core Success

[hal2710]

0928CPMW - Hal2710 - Gigabyte GA-MA770-UD3 - FF - Success - Link

Time to update sig !!!!


Hello again everyone.

[C-BuZz]

It doesn't appear the OP is ever going to update it.

Yeah I'll get this updated in the next day or so

C-BuZz

[HondaGuy]

550 Unlocked with NB @3000

[khayfc]

who got succes with 0931gmpw batch using mobo??? please tell me.......

[memel]

http://valid.canardpc.com/show_oc.php?id=818135

545@ X4 @ 4,12Ghz 1,35V : )

[OldBarzo]

Hi
Have just upgraded my Mobo to Gigabyte as per signature and running with 4 cores. But still CPU-Z and AMD Overdrive Utility do not recognize the extra 2 cores. Win 7 64 shows
all 4 cores inn System/Device Mgr/Processors. HAs anyone any idea why this is happening. Is it incompatibility with Win 7? Do not have this problem in Win XP 64. Also
Sandra show all cores in Win 7.

OldBarzo
(Douglas)

[mattlef]

http://valid.canardpc.com/show_oc.php?id=818135

545@ X4 @ 4,12Ghz 1,35V : )

Under water?
And what ram are you using? thats an impressive result with such low volts

[V0id]

Hi
Have just upgraded my Mobo to Gigabyte as per signature and running with 4 cores. But still CPU-Z and AMD Overdrive Utility do not recognize the extra 2 cores. Win 7 64 shows
all 4 cores inn System/Device Mgr/Processors. HAs anyone any idea why this is happening. Is it incompatibility with Win 7? Do not have this problem in Win XP 64. Also
Sandra show all cores in Win 7.

OldBarzo
(Douglas)

Have you tried the solution from this thread?

http://www.xtremesystems.org/forums/...d.php?t=239035

[hamo pipa]

0925 DPCW with MBO Biostar TA790GX A3+ ... FAIL

I was using 2 different bios, one is moded (78DAA629.CET) and second is from Biostar page (78DAAA26.BST)

It comes to the welcome screen and then I got blue screen with this error after trying to unlock 4 cores

"MACHINE_CHECK_EXCEPTION"

STOP: 0x0000009C (0x00000004, 0x00000000, 0xB2000000, 0x00020151)

Any idea is welcome or should I give up?

[Asuma06]

Hi,

I'm new here and wanted to share, my 550BE(0928CPMW) unlocked with MSI 785GTM-E45.
http://valid.canardpc.com/show_oc.php?id=830095

[Jethro]

My 545 unlocks and is rock stable @ crunching, gaming and prime95 but gets graphic anomalies with anything flash related. Like adverts/youtube etc. Not sure if its my bios's method of unlock perhaps or just a freak way its a bad chip!? Anyone get graphic anomalies when unlocking?

[Bkobe7]

Unlocked and mild OC to 3.3Ghz on stock voltages

0922MPMW - Bkobe7 - Asus M4A785-M - 0503 - Success - Link

I could boot into Windows at 3.4 and 3.5Ghz but neither was stable through Prime95 blend test for more than 1-2 hours (BSOD/rebooted). Tried upping Vcore to 1.375V and CPU/NB Voltage to 1.25V but no dice.

How does one tell which core# is the weakest link?

[Asuma06]

Unlocked and mild OC to 3.3Ghz on stock voltages

0922MPMW - Bkobe7 - Asus M4A785-M - 0503 - Success - Link

I could boot into Windows at 3.4 and 3.5Ghz but neither was stable through Prime95 blend test for more than 1-2 hours (BSOD/rebooted). Tried upping Vcore to 1.375V and CPU/NB Voltage to 1.25V but no dice.

How does one tell which core# is the weakest link?

Try 1.4v for Vcore and 1.3v for cpu/nb voltage. leave bus speed at 200 and HT link at 2000.