The other day on patchwerk25 my mage broke 7k dps, I was hitting over 10k on thaddius. Its crazy how well mages, warriors, and DKs scale with gear. Of course my mage is in 4/5 T7.5 and has some malygos25 pieces, plus he's arcane so you can really scale the DPS very high near ends of the fight just by spamming arcane blast (and of course go through 20k mana in 20 secs lol)