If I'm not gonna OC, will i notice a difference between
http://www.newegg.com/app/ViewProductDesc.asp?description=20-145-450&depa=1
and
http://www.newegg.com/app/ViewProductDesc.asp?description=20-145-440&depa=1
http://www.newegg.com/app/ViewProductDesc.asp?description=20-145-450&depa=1
and
http://www.newegg.com/app/ViewProductDesc.asp?description=20-145-440&depa=1