Originally Posted by amd-dude
I have the same chip as u and i have tried it in literally 15 different configurations. Both as a unlocked B55 quad core and the normal 555 dual core.
First off if its not an extreme overclock you are looking to achieve then you should leave the voltage at it's stock setting i.e. 1.38v Also if you do want to know if you want to run higher voltage you will need to change the cpu cooler...i will highly recommend the cooler master hyper 212+...its cheap at $30us and performs extremely well with this chip. (as a side note the highest safe air cooled cpu voltage is 1.55v)
Since you are looking for a little boost i would say go the easy route and just increase your cpu multiplier to say between 17x and 20x (yes 4ghz is attainable at stock voltage with this chip)
Once you have increased the multiplier save your bios and boot into your operating system. Run a stress test application like Prime 95 or OCCT, i personally prefer OCCT linpack because it exposes chips a little better than prime 95.
If you were able to run the stress test say for 30mins to 1hr you can take a chance and say that you are good to go for gaming or basic office work/internet browsing...however if you do things like folding you would really want to run the stress test for atleast 8hrs (a rock solid test would be 24hrs with no errors)
Once you got past 30mins on on particular setting i.e. cpu-multiplier on 18x, reboot your machine and again increase the multiplier to say 20x and if 20x is unstable back down to 19x and see if it is stable so you can gauge what performance to expect when the cpu is under stock volts.
Once you have found a stable cpu frequency you can try to increase the cpu-nb frequency, again this is a multiplier setting, i've found that with my chip the maximum safe speed is 2600mhz with stock voltage, the absolute limit is 2800mhz with the cpu-nb voltage set to 1.4v
Overclocking the RAM is a different story...try to overclock the cpu first and get back to me and I will help you with the RAM overclock.
Firstly I would like to thank you for good advice
I got a question , is better to unlock cores or just increase cpu nb and cpu multiplier for better gaming? I like both of your settings found in the pictures at your signature.
And how I check the stability of CPU when I will increase the multiplier
.?You got it set on x18 right?
I saw your specs you have almost same rig
, and how long time you've been used computer since boosting(overclocking) the same way ?
Yes ofcourse I will upgrade my cooler definitely
, I am between Cooler master TX3 and plus 212. My current cpu temp is 26-29 C , while gaming its max 48 C.
Is that chipset good overall ?
Since yesterday evening, i have experienced some issues with sound and video playback quality twice - I noticed it while surfing in youtube video was lagging extremely and there was no sound at all. What could the broblem be ?Edited by Martin7R - 2/24/11 at 7:28am