Hi extreme people

sorry guys for some nobe questions.....
i had a new system running for a month now.R2E Bios 1639 with 920 Do chip on stock HSF,volts etc.first of all with the ambient temp of 32 the cores are 40 38 41 37 on idle with core temp 0.99.5 reading.why is so much difference in between cores,first week and a half the difference was not so much,but now after one and a half month of using the differene is more noticable. is it normal? i notice the Mother Board is little bend on top where the top HS for mosfets.i used lots of asus MB,last one had same problem it bend where the cpu is and on top like this one. did any one had bend problem.is it because all MB are made in china sh**t.this board is in Antec P160 case.
sorry for my bad english.
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