CL2 PC3200 should suit you well for overclocking. I know JPeyton recommends some TCCD-based Patriot CL2 PC3200 (I think it's available as either 2-3-2-6 or 2-2-2-5, the XBL edition). Apparently, those that used to swear by BH-5 have moved to this now that BH-5 is a collector's item. This stuff is supposed to make 250 easy.