my opti 175 does 2750 with 1.35 in bios...but with a load on both cores i am pushing well into the 50's with a nado and si-97 that i modded a while back when i first got my winnie becasue they sent me the wrong kit...any way i have had this chip over 3gh taking it out side in the cold...i am going to go water cooling soon and that should DRASTICLY help...maybe a 3ghz chip on water with 1.55

Dragon