PII 550 BE + MSI 770t-C45

[murfaaa]

Hello! first i would like to say that i really like this forum, i read it all the time.

now its time to ask experts a question


i have a MSI 770T-C45 Motherboard , not 770-C45, there are some differences like 770T has DDRII and 770 DDRIII .....
And i Also have a Phenom II 550 Black Edition ....

i would really like to unlock the other 2 cores, but there's some issues....

bios allow to unlock them, i did it, and it changes, and show a phenom X4 in system information... but cant start windows... now im using vista x64, it gives me a nice Bluescreen with an error like 00000x01 or something like that......





i have this Hardware.


Motherboard MSI 770T-C45
Phenom II 550 BE
DDR2 OCZ GOLD 800MHZ
HD 750GB Samsung 32MB Buffer
VGA Zotac 9600GT 1GB 256bit.



HELP ME PLEASE!

[murfaaa]

thanks the same.


nice forum!

[charged3800z24]

It is most likely the bios support. I had a 550BE that unlocks fantstic on the MA790FXT-UD5P and clocks to 3.8ghz easy and higher (not as stable). When put on the 790FX-GD70 (regaurdless of bios) with the same hardware, it would unlock, but not even OC at all. At stock clock @ x4, it still locks up occationally. When @ x2, it OC well and runs 100%. The MSI has been getting better with each bios, but still not great fo this chip. Also, the chip could be the issue, not all like to unlocked.

[Tom128]

You could just have a chip that has actual bad cores. Perhaps try over-volting and under-clocking and see if it stays stable with that type of setup just to see if the cores can be made stable.

[murfaaa]

thanks for the answers...

i've tryed to DC and still the same...


but when i set the CPU voltage to 1.248v i can see some changes. i can get to the welcome screen , and then bluescreen again...

im really thinking about the bad cores theory .


sorry my bad english

[ReKcOlNu]

The BIOS should auto set the correct voltage for the CPU, they are variable, not all 550 chips will need the same amount of voltage.

According to AMD's power and thermal data sheet for the Phenoms the X2-550 BE @ 3.1GHz is rated at a minimum of 1.20V and a maximum of 1.425V.

So you might want try 1.3V or 1.35V @ 3.1GHz as 1.248v might just be too low to run stable for the chip you have, but again the BIOS should auto set the correct voltage for your CPU.

[Tom128]

I believe once the chip is unlocked from an X2 550BE to an X4 B50 the auto-voltage reliability goes completely out the door. I would hard-set the voltages to say 1.4v in the BIOS just to see if it stays stable.

[ReKcOlNu]

I believe once the chip is unlocked from an X2 550BE to an X4 B50 the auto-voltage reliability goes completely out the door. I would hard-set the voltages to say 1.4v in the BIOS just to see if it stays stable.

I don't see why it would, the x2-550 is just a X4 to begin with, they are all the same cores, so there shouldn't be any need for more voltage, of course that is if you have a board with a decent BIOS and the CPU doesn't actually have 2 bad cores/cache... you can't fix broken cores no matter how much voltage you pump into the chip!

[biohead]

thanks for the answers...

i've tryed to DC and still the same...


but when i set the CPU voltage to 1.248v i can see some changes. i can get to the welcome screen , and then bluescreen again...

im really thinking about the bad cores theory .


sorry my bad english

up the voltage to 1.35v, 1.248v is too low anyway.

[Tom128]

I don't see why it would, the x2-550 is just a X4 to begin with, they are all the same cores, so there shouldn't be any need for more voltage, of course that is if you have a board with a decent BIOS and the CPU doesn't actually have 2 bad cores/cache... you can't fix broken cores no matter how much voltage you pump into the chip!

What I was referring to is model number and BIOS being aware of the CPU and what to auto-set things to. X4 B50 is not a real model number, so I would personally not trust a board to pick voltages, timings and tolerances correctly even if all the cores are 100% functional.

[ReKcOlNu]

What I was referring to is model number and BIOS being aware of the CPU and what to auto-set things to. X4 B50 is not a real model number, so I would personally not trust a board to pick voltages, timings and tolerances correctly even if all the cores are 100% functional.

The CPU name/ model has nothing to do with how a BIOS reads/sets voltages, download the PDF from AMD's site called, "BIOS and Kernel Developers Guide For AMD Family 10h Processors".

[haylui]

try get an Asus board
allows your to unlock one core at one time in the event the core you unlocked it a bad one.