Use the multiplier,its very long since I had over clocked an amd,may be in 2009 ,Im completely lost about it niw,google it out. I remember I safely did 3.7 or above on Biostar board.
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My 3rd question I Have 4 slots for RAM. Suppose if I added a new gskill dual channel 2*2RAM with 8-8-8 cas latency to my existing gskill 2*2 dual channel RAM with cas 9-9-9 will they both work fine? I mean will they work in dual channel.