OC on stock voltage?

lookerup

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May 25, 2011
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I have a amd phemon II x6 1090t. I want to OC it at 4.2ghz. I have a rosewill 600w but soon will get OCZ Zt 650w. Is it possible to OC at stock? At the moment it's at 3.8 ghz at 1.45v(horrible)