it takes more than 1.35v for a decent chip to achieve 4GHz unless ya chip is a 95watter. my fren managed a 4.0GHz w/ 1.44v... 

http://forum.lowyat.net/index.php?act=Atta...post&id=1658844

Naise HAF922 case u got there

Hmmm getting a better cooler helps eliminate the heat issue for ur cpu, software temp readings sometimes are not really accurate, like bro antonio said u need add a lil more as heat headroom also
I really know that a 1055T can be push higher than what u getting coz i tested my friend's cpu just a few weeks ago.. To get to ur speed cpu volt around 1.3v is also enuff
U may need to put some heatsinks on ur pwm's also just incase like what i did with my old Gigabyte MA770T-UD3P:

i tested again.. My system only stable at 248MHz FSB. More than that will crash.. using integrated display now, but i wonder this will affect the OC

Any sifu can help.. my MB gt problem, or my proc??

Hi, i have sorted out my problem.
So I tried again by setting my ram running at 1000MHz, and it works!!!
I can run my CPU at 255MHz now, will try to push it higher later, running Prime 95 for bout 1 hour now and no problem.
Last time system will crash after about 10 mins  

Thank you for all sifus for giving me advices