I'm at 2.45 with 1.475 V. Can't go higher, not even with 1.5V, core0 not stable in Prime, core 1 stable even at 2.55. Temps 57-59C with 1.475V during Prime with both cores running at 100% load. Multi =10, HTT=4, memory might be my problem: 4x512 GB Twinmos PC3200 2.5-3-3-8 (set 2-3-3-7, 2.8V) which requires 2T. Mobo is ASUS8N-E which is not the best for overclocking but is reasonably good for my purpose. I'm happy with my oc results with the work hours I've put in. Not much to be gained without major upgrades in cooling and memory.