overclocking pentium dual core e5400 2.7 ghz

Qarayev

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Nov 17, 2014
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hello everyone i tried to overclock intel e5400 up to 3.4 ghz without touching voltages but after 3.4 ghz i am getting some problems like lagging, pc is not opening or after opening "hardwar error" issue.In bios there are three options in terms of voltage:
nb voltage
dram voltage
cpu vtt
All of them is "auto"
Should i change them or these problems are caused by another thing?
(specs:
e5400
msi g41 p33 combo 3g ddr2 ram 800mhz)
 
Have the same chip on a cheapo Gigabyte motherboard as a HTPC @ 3.6Ghz

Multiplier : 13.5
FSB : 266mhz
Volts : 1.4 ... you can experiment and reduce this, mine is at 1.35.

and thats all I touched, except swapping heatsink for a Freezer 7 Pro for added piece of mind.