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First Time Unlock-Phenom II x2 550

post #1 of 13
Thread Starter 
Hey all, I'm looking at unlocking my 550 and I just had a few noob questions.

1. Is anything permanent? I know my motherboard has a BIOS option that I just need to change, so can I simply go back to what it was before if something goes wrong? No consequences?

2. If it works, is there anything I need to do/watch? I've heard temperatures can be an issue and my computer is kept in a fairly warm room.

3. Anything else I should know in general?

I'd love to get some more power out of this processor if possible but not at the expense of possibly damaging anything.

Thanks in advance! smile.gif

Processor: AMD Phenom II x2 550
Motherboard: ASUS M4A785-M
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
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post #2 of 13
I've had an unlocked 550BE and I found their is nothing permanent as it's all in the bios but you will loose the temp sensors.

I was lucky and was able to hit 4.1 as quad for benching buy took 1.55v. I ran 3.8 as quad most of the time with 1.45v but I've seen a few reports that were able to run 3.8 with just 1.35-1.4.

Just remember not all chips will 4 fully functional cores, many people have still been lucky to get tri cores.

Still a good bonus for the price

Also just noticed your board, the 785 chipsets had good results, I had one myself
post #3 of 13
1) If its unstable or hangs, disable ACC. Conversely you could reset CMOS
2) Not much other than stability.
3) Not particularly, sometimes only one core will unlock stably so you could end up with an x3.
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
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Plantronics Gamecom 788 
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Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
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post #4 of 13
make sure you have adaquate cooling. dont expect and x4 overclock on stock heatsink
post #5 of 13
unlocking to x4 or mild overclock (+5%) @x2 would be fine with the stock heatsink
overclocking with unlocked would require a bigger one

the 212+ is the best price/preformance hsf around
reg $30, sometimes on sale for $15

keep an eye on your temps, dont go let it over 60c, 70c will cook it

hwmonitor to watch temps, cpuz to verify core count/clock speeds
http://www.cpuid.com/softwares.html

unlocking cores will disable the core temp sensors
before you unlock figure out which sensor is for the socket
it will stay within about 5c of the cores

prime95 for stability/max temp check
http://majorgeeks.com/Prime95_d4363.html
Edited by ffejrxx - 1/15/11 at 2:40am
post #6 of 13
Thread Starter 
Thanks for the replies guys! I'm actually not planning to overclock at all, (yeah I know it's overclock.net rolleyes.gif).

As for temps how can I determine which temperature is the socket temperature? Do you think x4 at standard clock speed would be fine for the stock heatsink/fan to handle?

Thanks again!

P.S. Freakn, I'm a little confused by the voltages you mentioned. Is that only to do with overclocking?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
  hide details  
Reply
post #7 of 13
fill out the form here so we can help you better
http://www.overclock.net/specs.php?do=addsystem


you might need to up the core voltage a little to get it stable while unlocked
stock +.1v should be enough if it fails (never go over 1.55v)
if prime95 gives errors, then add a little more and try again
do small bumps, ~.001v at a time, and write down results (ex. x4 1.12v=fail)
prime95 blend test for about 5 min each attempt
if windows bsod or crash it probably has a bad core
you can try x3, (using cores 0-1-2 or 0-1-3)

leave all the other voltages alone if your not overclocking

to find the socket temp (x2), look at the core temp, and watch the other 2-3 temps
see which one follows the cores closest

one will be socket others could be nb or something else
nb temps will not change much when overclocking via multiplier

first run hwmonitor, see what you get
then run prime95 (small fft test) and see what happens
core temps will go up fairly quick, watch the mobo temps rise, the one that follows the core temps closest is the socket (should be +-5-10c from the cores) and exit (text -> exit, not the X, that minimizes it to tray and keeps it running)
Edited by ffejrxx - 1/15/11 at 3:48pm
post #8 of 13
Thread Starter 
Thanks a lot ffejrxx!

So I atttached the temps with stock everything, no overclocking and the standard 2 cores, do you guys see any problems?

I'm assuming TMPIN0 is the socket temperature as it's usually 4 degrees above the core temp.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
  hide details  
Reply
post #9 of 13
yep, tmpin0 looks to be the socket temp

58c/39c seem a little high for load/idle

see if you can put your vcore lower, that will bring the temps down some
1.38 isnt bad, but should go down to 1.1-1.2 if it stays stable there
post #10 of 13
Thread Starter 
All right, I'll have to experiment with the core voltage. I managed to get all four cores unlocked but the temperature was way too high so I dropped it back down to two. Made a new thread to talk about temps here: http://www.overclock.net/amd-cpus/916953-phenom-ii-x2-550-temps.html

Thanks again
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 B50 3.51 GHz (Unlocked x2 550) ASUS M4A785-M ZOTAC GeForce GTX 750 Ti 2GB 4 GB PC2-4300 DDR2 (533 MHz) 
Hard DriveOSMonitorPower
1TB Western Digital Caviar Black Windows 7 64-Bit Dell U2211H Rocketfish 700W 
  hide details  
Reply
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