Critical hit chance
From Diablo Wiki
- Were you looking for the Crowd Control article?
Critical hit chance (abbreviated as CC or ChC) is one of the most powerful and popular item modifiers in the game. New/naked characters deal 5% Critical hit Chance and 50% Critical hit Damage, and raising these figures considerably is one of the best ways to improve a character's DPS.
Items and skills that grand Critical hit Chance increase a character's chance to score a critical hit, which causes an attack to deal bonus damage. Not only does this increase the damage output, but many procs trigger off Critical Hits, making a substantial value in this stat essential for many of the more popular builds in the game.
 Critical Chance and Damage basics
Brand new characters of any class deal 5% critical hit chance at 50% critical hit damage. This figure can be raised by various skills and items, and boosting these values is one of the best ways to improve a character's damage in Diablo 3. High level characters in Diablo 3 generally have at least 25% CC, and figures over 40% or higher are not uncommon with good gear.
Critical hit damage increases with gear and skills as well, and high end characters generally have 400-600% CD.
A balance should be sought between the figures; high CD without much CC is a wasted opportunity, as is very high CC with little CD (though high CC can be useful simply to keep the procs clicking, aside from dealing damage.)
 Critical Hit Chance from Items
Critical hit chance can be obtained from numerous item types, and the modifier is among the most sought in he game. The following item types can roll CC on Magical, Rare, or as the random affix on Legendary/Set items:
- Amulets: 1-10% CC
- Gloves: 1-10% CC
- Rings: 1-6% CC x2
- Helms: 1-6% CC
- Bracers: 1-6% CC
- Off-hand (shields, quivers, mojos, and sources): 1-10% CC
Total: 54% from these items, if all were perfect seeds.
A number of legendary items provide CC from other item slots, or from partial item set bonuses, allowing characters to accumulate higher totals.
A number of legendary items of the above types have some inherent value of CC that will always appear on that item. Such items can not roll additional CC from their random modifiers, so the values will never stack higher than the above figures.
 Critical hit Chance by Class
The classes vary widely in the amount of Critical hit Chance they can add with skills. For instance, Barbarians can easily add 5% from Ruthless and 15% from Weapons Master, while Monks don't have any CC boosting skills at all.
The amount of CC required to succeed varies with character classes and builds, but 25% is a low figure for a high level character. Most players try for 40% or more in their end game gear, and totals over 50% are not uncommon for very well-geared characters.
As of January 9, 2013, the highest CC figures for skills + equipment (verified by Diablo3Ladders.com) were: