Rich: ToC/ deep frost
This build uses DPS cooldowns for maximum benefit, which means as often as possible for boss fights with no "burn periods", but also means saving cooldowns for when the boss is vulnerable and DPS needs to increase. Blizzard has admitted that Frost is currently low on raid DPS and it remains that way even after a minor buff in patch 3.2. However, if raid survivability is a problem while learning an encounter, frost mages are more likely to stay alive, especially when the Ice Barrier talent is taken. Frost is extremely mana efficient, so it pays to get extra magic resistance from Magic Absorption at the cost of one point from Arcane Concentration. Avoid casting Fireballs during Fingers of Frost procs, which will potentially add 50% extra crit chance on the instant cast Fireball right after two Fingers of Frost frostbolts. Also, try to summon the water elemental just before Heroism/Bloodlust. The lowest value DPS talent points in this build are (in no particular order): Ice Floes, Student of the Mind and Spell Impact. The point in Ice Floes could be used for a second point in Improved Blizzard. Always keep one point in improved blizzard, so that Blizzard procs Fingers of Frost. This version of the build uses only three points in Arcane Concentration. For some fights, an extra 2% mana efficiency can be more useful than a point in Student of the Mind or Spell Impact, each of which is only worth a fraction of a percent in DPS.
Gen: demo/destru
This build takes both Emberstorm and Decimate, with Emberstorm increasing Soul Fire damage by 15% for spectacular synergy. Spare points in Demonic Tactics further improves nuke damage. The beauty of this build is the cycle is VERY easy. Curse of Agony or Curse of Elements, immolate, corruption then spam Incinerate like crazy making sure to pop Demonic empowerment when ever you can. When Decimate becomes available, interleave Incinerates with Soul Fires. The downside is the lack of Demonic Pact given by deeper Demo builds.