core unlocking{l Quote}:
ASRock UCC
ASRock UCC (Unlock CPU Core) feature simplifies AMD CPU activation. As
long as a simple switch of the BIOS option “ASRock UCC”, you can unlock the
extra CPU core to enjoy an instant performance boost. When UCC feature is
enabled, the dual-core or triple-core CPU will boost to the quad-core CPU, and
some CPU, including quad-core CPU, can also increase L3 cache size up to
6MB, which means you can enjoy the upgrade CPU performance with a better
price. Please be noted that UCC feature is supported with AM2+/AM3/AM3+
CPU only, and in addition, not every AM2+/AM3/AM3+ CPU can support this
function because some CPU’s hidden core may be malfunctioned
as far as overclocking, the manual shows settings can be changed in the bios setup, again, unless you are sure what you are doing, i would leave it alone. if you overclock, you void the warranty.