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Math on Two Meta Gems
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Post by
Mesoforte
I was doing some math on 2 meta gems,
Insightful Earthsiege Diamond
and
Ember Skyflare Diamond
. I was wondering how large of a mana pool you would need for Ember Skyflare Diamond to be better than Insightful Earthsiege Diamond for pure regen with
current
replenishment mechanics
. So here we go-
2% int- 20000 mana pool
21 int, 600 mana, 15 sec cooldown (Static 75 mp5)
Numbers rounded to nearest point of intellect.
4396 base mana
(X-20)*15+4396=MP
20000=(x-20)*15+4396
15604=(x-20)*15
1040=(x-20)
1060=x
1060*.02=21 int
21 int on both gems
Equal Replinishment gain at 20000 mana.600 more mana on 2% proc with 15 second internal cooldown. Both result in a 20311 mana pool at 1060 intellect.
At what point does 2% intellect provide more regen than 75 mp5(static mp5 value of gem)?
x*.0125=75
6000=x
26000 mana pool necessary to equal effect of meta (From an equal 20000 mana pool)
And this is why this won't work out. -_- I forgot to account for the increased int on the other gem.
1459 int
1459*.02=28.78
1487 int=26421 mana- 330 mp5
1480 int=26316 mana- 328.95 mp5+75 static mp5
Never mind on the math check, I realized what I forgot that was bugging me. So the question is moot until the intellect is ridiculously high.
Post by
Hyperspacerebel
Note also, replenishment is getting a slight nerf in 3.2
Post by
Mesoforte
Which probably won't hit until at least fall.
Post by
Mesoforte
Gah, I just figured something out. One sec while I mess with the math.
Post by
219211
This post was from a user who has deleted their account.
Post by
Mesoforte
Let's do some simpler math.
So, insightful one gives 75 mp/5 in the very best case. According to
http://elitistjerks.com/f47/t24796-shaman_restoration/#Intellect__amp__Mp5
10 int = 6 mp/5 for 5-minute fight with 100% replenishment and mana tide.
So to have 75 mp/5 from int, we need 75/6*10 = 125 int. To have 50 mp/5 (more realistic value coming from spamming chain heal) we need 83 intellect.
125 is 2% of 6250, 83 is 2% of 4150.
Elitistjerks say that you need 3654 int for both metas to be equal, I don't know what formula they are using.
I am not exactly sure how much mana you will have with 3654 (or more if you take my numbers) intellect, but I bet it will be way above 50K, given that now about 1100 int gives 20000 mana.
Yeah, I gave up when I forgot to equalize the int on both gems on the last part. :o
And this math isn't complicated. I just did the conversion from mana pool to int, added in the extra in boost from both gems, converted it back to the mana pool, and then checked which would be higher based upon replenishment. :D
Post by
66520
Something worth remembering though is this is a comparison in
mana regeneration only
. Ember Skyflare, at my gear level, offers more intellect and more spell power at the sacrifice of the mana refund.
If you have enough mana regeneration on your gear there is no reason not to use Ember Skyflare even at levels where it is supposedly greatly weaker than Insightful Earthsiege.
Post by
219211
This post was from a user who has deleted their account.
Post by
Mesoforte
I think he was talking about my calculations, not ej. And while its true that you would lose the higher regen component if you switch gems, if you weren't having mana problems on fights, there's no need to take into account the regen. Int provides spell power, and crit besides a higher mana pool and regen.
Any extra mana you have left over consistently after a fight is essentially wasted mana. If you don't need the extra regen, I could see the point of socketing something else.
Again, he's saying that he's not having mana problems in fights, and thus doesn't need the regen benefit from the meta gem. So, if that's true, you would need to weigh the gem in stats other than regen.
Something worth remembering though is this is a comparison in
mana regeneration only
. Ember Skyflare, at my gear level,
offers more intellect and more spell power
at the
sacrifice of the mana refund
.
If you have enough mana regeneration
on your gear there is no reason not to use Ember Skyflare even at levels where it is supposedly greatly weaker than Insightful Earthsiege.
To reiterate, the gem offers more int, and spell power, which are what he's looking for. And he's willing to sacrifice the mana refund for it. Also read the qualifier on the last sentence.
Post by
219211
This post was from a user who has deleted their account.
Post by
66520
I was referring to EJ, since that's what everyone quotes and your own calculations are largely a reproduction of theirs.
I'm very aware the calculations include mana expressed as a factor of mana regeneration. I don't want more mana, that's not what this gem is about and that's not what you should use it for.
Ember gives more than 25 spell power and is a loss of less than 50mp5. I'm not comparing 50mp5 to 25sp. That's your comparison, and my statement was that
if
you're making that comparison you take
Insightful
. If the comparison is
0
mp5 to 25+sp then you take Ember.
I do have plenty of gear to swap around. Unfortunately the
losses
of swapping it in far outweigh simply replacing my meta because the large bulk of it belongs to Naxx, or is the mp5 gear I'm not wearing. This can be attributed to my guild's dkp system, but I feel the large portion of blame belongs strongly on Ulduar's itemization.
There is no haste meta, so comparing spell power's throughput to haste when discussing meta gems is erroneous. You
cannot
choose between the two.
Stacking spell power at
any
level gives you more throughput than mana regeneration you do not require.
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