My Redlines hit 1066 on stock voltage and tested out fine. I'm certain you could do at least that on the Ascents.
__________________ EVGA750i FTW|Q6600@3.0 1.30v|4gig Mushkin Redline 5-5-5-12 @ Stock|2xEVGA 8800GT Akimbo|Corsair TX750|Antec 900|Samsung 226BW 22" LCD|WD 640gb Blk Ed.|WD 750gb Blk Ed.|Vista 64 |