I Happened to see this over at the Bioware forums and thought it was worth reproducing here.
The file Atari\Neverwinter Nights 2\Campaigns\Neverwinter Nights 2 Campaign\i_silver_sword_a q.nss gives all the statistics of the Silver Sword.
These stats apply universally to all silver sword variants:
+1d12 damage vs. outsiders
+1d4 magical damage bonus
DR 5 vs. acid, cold, electrical, and fire
+1 bonus to each ability score
Special Properties:
Blade Storm
Meditative Restoration
Shard Barrier
Shard Hail
Each class' sword also has it's own unique stats has it's own stats
(Ability score boosters do NOT stack)
Barbarian:
Str +3, Con +2
+5 Enhancement Bonus
Massive Critical +1d10
Extra Rage
Bard:
Cha +3, Dex +2
Fort, Ref, and Will +3
+3 Enhancement Bonus
Extra Music
Cleric:
Wis +3, Con +2
Immunity: Death Magic
+4 Enhancement Bonus
Slay Undead on Hit DC 18
Druid:
Wis +3, Dex +2
Regeneration 1
+4 Enhancement Bonus
Extra Wild Shape
Fighter:
Str +2, Con +3
Keen
+5 Enhancement Bonus
Extra Melee Damage: Piercing and Bludgeoning
Monk:
Dex +3, Wis +2
+4 Enhancement Bonus
Immunity: Level/Ability Drain
Stun on Hit DC 18
Extra Stunning Attack
Paladin:
Str +2, Con +2, Wis +2
+4 Enhancement Bonus
Immunity: Paralysis
Extra Smiting
Ranger:
Dex +3, Wis +2
+4 Enhancement Bonus
AC Bonus +2
Spot, Listen, and Survival +5
Rogue:
Dex +4
+3 Enhancement Bonus
Wounding on Hit DC 18
Hide and Move Silently +5
Free Action
Sorcerer:
Cha +4
+3 Enhancement Bonus
Concentration +10
SR 20
Immunity: Mind-affecting Spells
Warlock:
Cha +3, Dex +2
+3 Enhancement Bonus
SR 16
Blindness on Hit DC 18, 3 Rounds
Wizard
Int +4
+3 Enhancement Bonus
Concentration +10
SR 20
Immunity: Mind-affecting Spells