The Enigma Order

From twintop:
General rule of thumb we’ve been telling is if you have 30k+ Spell Power (~ilvl 505 – 507, depending on weapon), you should switch to the Haste Gems (R: Haste/Int, Y: Haste, and B: Haste/Spirit). Once you get up to ~515-517ilvl it might be worthwhile to gem straight +320 Haste gems unless the socket bonus is +int or +haste.

Personally, I’m gemming the Haste combo gems (H/I, H, H/S) right now and having very good results.

30k is raidbuffed btw