[outdated] Caustic Arrow Solo Map MFer (20/300+)

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eugenez wrote:
I'm running a MF/dps hybrid variant of Poison Arrow now and recently upgraded to a 6L +3 and have the option of socketting either the IIR or IIQ gem. What would be your advice? I'm currently at 13% IIQ/109% IIR and mainly run 78+ maps with >100% map IIQ.

Thanks.


Maximize C where:

C = (1 + IIQ/100) * (1 + IIR/100)

IIQ = increased item quantity on your gear/gems
IIR = increased item rarity on your gear/gems/jewels

Compute C for your gear with the IIR gem slotted. Next compute C for your gear with the IIQ slotted.

Go with whichever is higher.

Note: It turns out that map IIQ/IIR stacks multiplicatively with with your own IIQ/IIR. This means that you should ignore the map IIQ/IIR when computing C above. In a previous post I thought that it stacked additively and incorrectly stated that you should add map IIR and IIR to your own - which was wrong. I've since edited my earlier post make this correction.


Edit: Using your numbers, assuming +1 to socketed gems and 20% quality on gems I get:

Using IIR gem: C = (1 + 0.13) * (1 + 1.79) = 3.15
Using IIQ gem: C = (1 + 0.57) * (1 + 1.09) = 3.28

Since 3.28 > 3.15 you should go with the IIQ gem.

Note: if you want to maintain flexibility with your bow (e.g. switch in Increased Area of Effect) then a free blue gem is probably better. For pure MF a red slot for IIQ is best but for flexibility you might want a blue slot.

Yet another note :-)
I was assuming that you were considering how to color your bow and were trying to decide whether to make 1 additional red socket (2 in total) or leave it blue. Dropping Empower for IIQ would yield better MF but your DPS, and hence clear speed will go way down. If you're going to go with the bow as is, definately swap in IIR.
Last edited by hankinsohl#1231 on Aug 23, 2015, 11:48:26 PM
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eugenez wrote:
I'm running a MF/dps hybrid variant of Poison Arrow now and recently upgraded to a 6L +3 and have the option of socketting either the IIR or IIQ gem. What would be your advice? I'm currently at 13% IIQ/109% IIR and mainly run 78+ maps with >100% map IIQ.

Thanks.


IIR.

And you plug the shortfall with jewels mostly looking at your gear. Or alternately switch to a rare chest and forgo the life benefit of Belly.

Without knowing what your current life sits at, hard for me to say but imho if you're above 5200 life with a rare chest with 80 flat, I say do that instead. That'll open up Andvarius for you in conjunction with better jewels. Most of what you have is either damage/damage or life/damage. Invest in a jewel or two that has three useful affixes and it'll be a lot easier.

You can also make up some of the life lost from dropping Belly that way if you need to. I count at least three jewels you could adjust for res on a quick scan.
Jul 27, 2011 - Sept 30, 2018.
Serleth, our responses crossed! And congrats on the 8/8!!

Got it. Thanks both!
Last edited by eugenez#5846 on Aug 23, 2015, 11:34:05 PM
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eugenez wrote:
Serleth, our responses crossed! And congrats on the 8/8!!

Got it. Thanks both!


Thanks! =) Woke up and was fortunate enough to have a Phantoms tempest right off the start. =)


EDIT: Thanks to Hank for covering in the explanation of why I said IIR. The clear-speed isn't worth dropping Empower with the colours as is.

As a side-note I have put together a C-Value Calculator to make life easier.

Simply save it as whatever file type you need to your own drive and you can calculate on the fly.
Jul 27, 2011 - Sept 30, 2018.
Last edited by Serleth#4392 on Aug 24, 2015, 2:31:34 AM
Perfect. I had to go old school with a calculator. Will try to gear up on MF now.


Hey there,


Thanks for the guide, I am having a lot of fun playing it.

One question I had - is it necessary to invest passives into pierce if you do not plan on getting a drillneck? As of right now, my quiver is what is holding my resists at a fairly even balance, and I do not have the will or currency to invest in a drillneck as that would also mean redoing much of my gear.

So, for standard tri-res+hp budget quivers, is pierce needed?


I know Pierce within itself is nice as it will create more clouds for quicker clearing, but at my particular juncture, it would allow me to essentially spec out of 3 points of pierce to obtain 2 additional gem slots which would equate to about 50% increased cloud dmg.
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Wukufyze wrote:
Thanks for the guide, I am having a lot of fun playing it.

One question I had - is it necessary to invest passives into pierce if you do not plan on getting a drillneck?


You're welcome. =)

To answer your question: no. Pierce on its own does not provide enough benefit without a Drillneck.
Jul 27, 2011 - Sept 30, 2018.
Last edited by Serleth#4392 on Aug 24, 2015, 4:00:11 AM
Some Fun with Math Regarding "C" and Magic Find. Skip if not interested.
Spoiler

You might have heard that, if possible, it's best to balance out your IIR and IIQ values - in other words, it's generally better to gear such that IIQ and IIR are as close as possible in value.

Unfortunately, this isn't achievable in practice as gear with IIQ is much harder to find and the IIQ values on such gear are always lower than same-slot alternative gear with IIR. So, we calculate "C" and go with whatever gear yields the highest "C" value, all other things being equal (such as not gimping life/clear speed/resists/other factors too much).

At any rate, you might be wondering why, mathematically speaking, it's generally a good thing to balance IIQ and IIR if possible.

In other words, given that:

C = (1 + IIR/100) * (1 + IIQ/100)

why is it that higher "C" values are obtained when IIQ and IIR are closer together in value?
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Theorem: Given two integer variables x1 and x2 whose sum x1 + x2 is a fixed total T, the product of the two integers P = x1 * x2 is maximized when x1 = x2.

Can you prove this?
Spoiler

P = x1 * x2
x1 + x2 = T
x2 = T - x1

P = x1 * (T - x1) = Tx1 - x1^2

Inflection points occur where the slope of a curve equals zero. We are looking for the inflection point in the curve for P where P takes on its maximum value. To the left of this point P will be gradually taking on higher and higher values until we reach a maximum. To the right of this point, P will gradually decrease. Thus, we look for the point on the curve where the slope will be zero and so we solve for:

dP/dx1 = T - 2x1 = 0

We've used calculus here and taken the derivative with respect to x1 of both sides of the equation for P. We set the derivative to zero because we're looking for the inflection point on the curve.

Solving for x1 we have:

x1 = T/2

and thus

x2 = T - x1 = T - T/2 = T/2

So the maximum value of the product occurs when X1 = X2 = T/2.

QED


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So, it's because of the theorem above that we try to balance out IIQ and IIR when gearing (but calculate "C" to make any final decision).

Note that the theorem strictly applies only when x1 and x2 add up to some fixed total T. This would be true if we were somehow able to replace IIQ with IIR on our gear on a 1 point of IIR replaces 1 point of IIQ basis. This isn't the case as explained above which is why we calculate "C" but use the "balance IIQ and IIR" principle as merely a guideline.

Last edited by hankinsohl#1231 on Aug 24, 2015, 4:54:03 AM
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Serleth wrote:

As a side-note I have put together a C-Value Calculator to make life easier.

Sweet! You da Man!
hello, does item rarity gem effects if the kill is made with DoT?(poison arrow cloud),
thanks in advance,
edit:
just got an answer so nvm that question :p
Last edited by erani#1319 on Aug 24, 2015, 11:08:26 AM

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