How a Weapon's DPS is Calculated

After doing some research and testing myself I figured internet will have answer to this question :) This video is quite illustrative for example:

This frame includes all pieces that you need to multiply to get the in-game Damage value: www.youtube.com/watch?v=AEyiezB8Mpw#t=6m19s

Few things to learn from it:

• Each weapon's type has its own base attack speed (e.g. 1h dagger = 1.4, 2h mace = 0.9)
• Weapon's own attack speed magic modifier is already applied to weapon's base attack speed on tooltip
• Weapon's total attack speed multiplies weapon's average damage and any other damage sources on armor (rings, amulets, off-hand)
• 3 other damage modifiers are equally important and they are: primary stat * 0.1, crit chance * crit damage and non-weapon attack speed
• Mana-based classes should also take resource into consideration: with two different builds giving same damage output, the one with lower attack speed may be preferable for continued fights!

Now, to my previous post about attack speed is the king. Apparently, if you have 100% crit damage and can increase crit chance by 15% - it will give you same boost as if you added 15% attack speed without any arcane power cost. However, I'm yet to build 100% crit damage (currently at 68%) and I never saw a ring with 15% crit chance, when 15% asp rings are cheap and available.

Same for intelligence. If my primary stat is 1480, then to have 15% damage increase I need to add 222 intelligence! Which is again a quite high stat for a ring. However if I replace my 200 int amulet with just 15% asp, I'm not getting much out of it.

Final note: you need to know relative importance of each damage affecting stat as well as this stat availability (i.e. how much you can add to stat X with single upgrade of item Y) to find the best upgrade for your current item set. Also different skills favor different dps builds (i.e. crit-based, asp-based or raw damage based).