I am wanting to upgrade my ram from x2 512 to x2 1gb i was wanting to know if the Kingston 2GB DDR2 667mhz/PC2-5300CL5 non ecc 1.8v would work fine on my computer mother board is an L4S5MG/651+ and says in book it can accept DDR 200/266/333 SDRAM unbuffered 2.5v 184pin slots max 2GB, what does all that stuff at the end meen CL5 non ecc 1.8v mean, also how easy is it to overclock this ram and how safe.