X2 550 Unlocking & Overclocking Consolidated

[nos7844]

Hello AMD boys

good news but at first the story of my Phenom 2 X2 550 0919 EPMW :

Motherboard : ASUS M4A78-E DDR2 790GX & SB750

Original bios : 0711 ..... unlocking : failed (black screen and reboot again, again and again .... when ACC is enable)

Bios 0082 modded : unlocking failed (when ACC is enabled, it's the same like 0711)

other try with bios from ASUS give me the same results : no boot

Bios 1204 : unlocking failed (when ACC is enabled, it's the same thing like 0711)

last try : bios 1210 (the last on line), I put the multiplier on 10, raise the vcore @ 1.50v but decrease the HTLink to 1600 MHz). I enable the "special" "unleashingé mode with ACC and try a boot.

Hmmmmm the PC boot but i have not see the post. Arrived under Vista, a little CTRL + ALT + DEL and i see ........... 4 active cores

A big YES !!!! I'm not sure : it's the last bios or the HT Link set to 1600 MHz but there are now 4 active cores.

I try 3200 MHz with 1.50v and it's stable. Maybe i can decrease the vcore but i'am now interresting to overclock my new quad core that cost me 85 €uro!

Sorry for possible mistakes, my english is a little poor

So finally unlocked or not?
I'm french too i also have Phenom II X2 550 (don't remember the stepping) and an M4A78-E, can you tell me what you can do with your hardware? (unlocking and overclocking possibilities)

thanks

[MacClipper]

So finally unlocked or not?
I'm french too i also have Phenom II X2 550 (don't remember the stepping) and an M4A78-E, can you tell me what you can do with your hardware? (unlocking and overclocking possibilities)

thanks

There are newer unlocking BIOS releases for your mobo already.
http://pic.xfastest.com/sxs112/ASUS/UMS/ACC-7.png

[ricsantos]

what´s the best stable mobo for batch 0919 epmw?

[ricsantos]

I just buy 0922 APMW 20pcs all unlock and stabil with 3 board DFI LP DK 790FXB M3H5, ASUS CROSSHAIR III, BIOSTAR 790GX A3+

dont you want to sell one of your 0922?

[Chickenlittle]

Hi all tried two of these out with the following results:

0925CPMW - Chickenlittle - Asrock A780GMH/128M - P1.20 - Success

0925CPMW - Chickenlittle - Asrock A780GMH/128M - P1.20 - Fail

Down here in New Zealand I've only seen two steppings at the moment. the other is a 0929APMW, so I'm hoping to try one of those.

Cheers

[sebadigri]

0922CPMW - sebadigri - ECS A790GXM-AD3 - 080015 - Success



---------------------
I successful unlocked my Phenom X2 550 BE with ECS A790GXM-AD3 Motherboard..
(A friend with same motherboard but another batch code unlocked his Phenom too).

I used a BETA Bios..And It was hard to unlock it..Sometimes i needed to reset the computer lot of times..

Currently I'm stable at 3.6 Ghz each core and 1.4v and very low temp with OCZ Vendetta 2 Cooler.
The temp that display the motherboard is not true with the unlock.
But i think it's like...58º when full working...

Another important thing: With this mother. the unlock is unstable with 2 Ghz HT. So i'm with 1 Ghz HT.
----------------------

[matieches]

Hi guys!! I tried with many mod bios on my ta790gx a3+ and i couldn´t unlock the 4 cores in my phenom 550. I set ht link speed 1.6, acc in all core and -2% and nothing (i tried to set auto too). Please if some one knows other alternative, tell me !! My batch is 0925CPMW. THANKS A LOT!!

[ReKcOlNu]

0925BPMW - chromeninja - Gigabyte GA-MA770UD3 - tried 3 BIOS FA, FB & FD - ALL FAIL!!



Managed to post, would get to load screen of Vista and hang....tried bumping voltage a bit, but to no avail....

I guess steppings don't tell the whole story, I have same one, unlocked and runnning fine (@17x200/stock vcore) for little over a week.

MSI 770-C45: BIOS v1.30
Phenom II X2-550 [CACYC AC 0925BPMW] @ 17x200 / 1333 @ 9-9-9-24-33-1T / 8600GT 256MB / XP Pro(SP3)

0925BPMW - ReKcOlNu - MSI 770-C45 - v1.30 - Success!
http://valid.canardpc.com/show_oc.php?id=687843

[chromeninja]

I guess steppings don't tell the whole story, I have same one, unlocked and runnning fine (@17x200/stock vcore) for little over a week.

MSI 770-C45: BIOS v1.30
Phenom II X2-550 [CACYC AC 0925BPMW] @ 17x200 / 1333 @ 9-9-9-24-33-1T / 8600GT 256MB / XP Pro(SP3)

0925BPMW - ReKcOlNu - MSI 770-C45 - v1.30 - Success!
http://valid.canardpc.com/show_oc.php?id=687843

Time to buy a MSI 770-C45 perhaps!!!

[ricsantos]

where can i get bios version 0402 for mb dfi m3h5?

[Deuces]

Unlocked Success!

0923EPMW - Deuces - Gigabyte MA790X-UD4p - F7 - Success

0923 EPMW from Fry's on a Gigabyte MA790X-UD4P mainboard.

Not OC'd yet: http://valid.canardpc.com/show_oc.php?id=697313

[ananan]

0928BPMW 's a bad code, I tested 35 cpu and 8 cpu pass , 27 not unlock

[wikiwiki1966]

0924fpmw - Asus M3a79-t - 1203 - Sucess

[mäggäri]

I've tested 2pcs Phenom II 550 BE cpus - Both did unlock

First I tested a 0926GPMW which was not even a near as good OC'er as 0929BPMW. But now, this 0929 seems to be quite nice, boots as a quad every time... mby due to mobo BIOS-update I did. I'm using ASUS M4A785TD-V EVO, very nice layout and all those options in BIOS, real candy I must say. Loadline Calibration also works like a dream with 0% setting... 1.5V and lowest value it gives me is 1.504V according to CPU-Z, highest is around 1.525V under heavy load.

Here's a screenshot of the 0929



And yes, these were the very first settings, first boot. So I've not even tried to boot up with a smaller vCore or any basic settings :P I just crossed my fingers etc... =D Let's just see what this can do with my Watercool HK 3.0 and Nexxxos xtreme 3 rev.2 and 1.65VCore <3 Now I'm cooling with EKL Brocken.

[Mic75]

0925BPMW - Mic75 - GA-MA790XT-UD4P - F5 - Tri Core Succes - link

Didn't think I was gonna be able to run this CPU on anything more than 2 cores at first. Unlocking was no problem and it did post, but wouldn't boot into OS (and I tried a lot of settings). Think the 4th core really is defective. But it now runs perfectly stable on 3 cores in Windows 7, XP and OpenSUSE.
Bit of a hassle to get there; need to install on 2 cores and edit the boot configuration to limit to 3 cores (took some time to figure out how to on Win7) before I unlock the CPU.
Have been running the tri core with a nice OC just for fun, but gonna thoroughly test&bench some configurations first before decide on what speed I'm going to run it. Still waiting for the thermal sensors I ordered to arrive before the real OC can start

[mäggäri]

Little bit lowered vCore and few MHz MOAR =D

[Balb0wa]

Little bit lowered vCore and few MHz MOAR =D

is it prime 95 stable though in vista ??

[mäggäri]

Nah, not with such a low voltage. But 3919 is stable

[peapod]

For the m4a78-e users a new bios 1404 is available through their ftp site.

This gives you control of what processors to pick from......

Sad thing for me that nothing worked no tri core or quad for me.....ah well!

[Fottemberg]

4 core
AsRock AOD790GX128
Bios 1.50

[acesabe]

0918 BPMW + Gigabyte GA-MA785GMT-UD2H BIOS F1 (not upgraded but irrelevant as dual BIOS) all cores stable but not overclocked, voltage/freq values as default for ACC in BIOS. CPU supplied from Ebuyer - mid August (took 3+ weeks to get access to post here??!!)



This is on a Linux desktop running KDE, temp sensors show 3 readings (idle at 36-38C) - presumably one of which is a shared sensor reading core temp...

[quake6]

Do you count 545?

[mursaat]

^^ I guess that's even better

[Smartidiot89]

0929GPMW - smartidiot89 - MSI 790FX-GD70 - 1.5b6 - Success

[daytripper67mi]

0922(APMW) -daytripper67mi-M3A78-T-1403-success

http://valid.canardpc.com/show_oc.php?id=706134