OP there isn't a straight "ultimate nuking gear" set, because like Seriha said, things vary. The goal is to come up with two sets in your mind, a set for when Resists are not a problem, and a set for when Resists could be a problem.
Vicious mufflers should out perform yigit on non helix spells. 3 MAB typically out weighs 5 int, especially on a job like SCH with low base MAB.
Total: +49 INT, +24 MATK, 15% from Staves, then Food and Weather Bonus.
If, by some chance, you have all of this, breaking 1500 on an Ebullience'd Thunder IV shouldn't be out of the question. Otherwise, you'd probably be in the 1000-1100 range if the mob isn't too tough.
Hmm, interesting speculation. Well, let's backward calculate it, and see how much int the target would need for a 1500 Thunder IV (w/ ebullience). Also assuming /rdm:
1500/1.2 = 1250 (damage before ebullience)
1250/1.1 = 1137 (damage before weather spell)
1137/1.15 = 989 (damage before staff)
989/1.44 = 687 (damage before MAB)
(687-541)/2 = 73 (amount of int more than target needed for 687 base damage)
Analysis: to pull off a 1500 Thunder IV (non MB, conditions described) it seems you'd need about 73 more int than whatever you're nuking. 49 of this is coming from gear; the other 24 would have to come from simply having higher base int (from your race/job) or from buffs/food.
For fun, /blm would look like:
989/1.48 = 669 (damage before MAB)
(669-541)/2 = 64 (amount of int more than target needed for 669 base damage)
And with vicious mufflers instead: 44 int 29 mab
989/1.47 = 673 (damage before MAB)
(673-541)/2 = 66 (amount of int more than target needed for 673 base damage)
*Note, with mufflers you'd only need an additional 22 int; yigit needed 24
And with vicious mufflers and /blm:
989/1.53 = 647 (damage before MAB)
(673-541)/2 = 53 (amount of int more than target needed for 673 base damage)
You'd need 4 more int than the mob you were nuking. Food should close the gap in this case most of the time.
Main Jobs: 75RDM (sept? 05) - 75BLM (July? 06) - 75WAR (feb ~14 07) 75 PLD (may ~2 07) 75 BLU (jan 08) 75 DRK (~feb 08)
Full Subs: 62WHM/38THF/42NIN/51BRD/RNG37/SAM37/44COR/37BST/37SCH
In Progress subs: 16MNK/21SMN/21DRG/30DNC
I do not have pup unlocked.
Alright, I'm tired of being civil, and now I'm tired of being sarcastically condescending, too.
Whining about having to farm is so 2004.