Originally Posted by
OOMM
I found a napkin.
If you do 100,000 dps over 2 minutes that's 12,000,000 damage.
Assume you now have the basic ring proc but same stats.
100,000 * 1.25 * 15 = 1,875,000 damage during buff
1,875,000 * 1.25 = 2,343,750 = explosion
1,875,000 - (100,000 * 15) = 375,000 extra damage from buff
2,343,750 + 375,000 + 12,000,000 = 14,718,750 total damage from having basic ring
14,718,750/12,000,000 = 1.2265 so about 23% damage increase
Assume you now have the final ring but same original stats.
100,000 * 1.437 * 15 = 2,155,500 damage during buff
2,155,500 * 1.437 = 3,097,453.5 = explosion
2,155,500 - (100,000 * 15) = 655,500 extra damage from buff
3,097,453.5 + 655,500 + 12,000,000 = 15,752,953.5 total damage from having final ring
15,752,953.5/12,000,000 = 1.312746125 so about 31% damage increase
So its about an 8% total increase... at a minimum. Obviously you'd be doing way more dps on a pull and using cooldowns/procs/strong abilities during this window so it'd increase by a very large amount. Especially if abusing aoe during this time. If you want a real answer try Simcraft.
*disclaimer, I don't know how to do math, but I do it anyways.