Diablo® III

crit, blizzard, hydra and you : extensive tests

90 Worgen Druid
12260
TLDR version : crit chance DOES work on hydra and blizzard, crit damage DOES work on blizzard but DOESN'T work on hydra.

The test being done:
first of all, I bought a "light crossbow" to have as simple a damage range as possible, it had a 9-10 which made number easy to compare.
I unequipped any +x-y damage ring/amulets I had
I unequipped any increased attack speed I had
I bought some cheap jewelry form the ah that had both crit and crit damage and no other dps-relevant stats.

statwise, with/without the jewelry the relevant data are:
set 1 : 1.1 aps, 9-10 weapon damage, 1268 int, 17.5% crit chance for +50% damage, totaling to a paperdoll dps of 155.46

set 2: 1.1 aps, 9-10 weapon damage, 1268 int, 25.5% crit chance for + 136% damage, totaling to a paperdoll dps of 192.53.

all tests were against a single slow zombie in act 1 inferno, for the purpose of reliability on damage over time effects ( blizzard, venom hydra) I stood still and took the beating under crystal skin.

All results were consistent in increased damage with the higher crit chance/crit damage gear, all other things being equal ( no +%damage modifier of any kind, no followers)
Edited by ciopo#2924 on 13/06/2012 09:20 BST
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Good Job and thank you.
you saved me a lot of work there, tho i'd like to know your observations as to how the crit / critdmg affected the numbers of the hydras, since i always only saw what seemed to be + 50% crits on my arcane hydra.
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Has anyone tested their furthur? I run venom hydra but have no crit damage/chance gear.
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for further tests you might do ... get your hands on an amulet of destruction (+9 min damage)
this will make your min damage= max damage (as long as you use the right weapon) .. All your offensive abilities will do constant damage ... Much easier to test...
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I am under the impression that while those spells gain damage from crit chance, they do not actually "crit". I have never once seen a blizzard tick or venom hydra tick do significantly more damage than normal. It's always the same numbers over and over, so I think blizzard just has some calculator that says "Oh, they have 15 percent more crit...lets give their spells a flat 10 percent dps boost instead of actual crits". I havent used Disintegrate or Ray of Frost enough to notice, but I have been told these spells work the same way.

And no, I have not tested this, but I have played in inferno for over 100 hours and would easily spot the change in damage if these moves actually hit critically.
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90 Worgen Druid
12260
well I don't know how much your crit chance and crit bonus damage is, but the damage variance you see with high crit chance and bonus crit damage is quite noticeable, especially if you keep a look only to ray of frost, at my current stats ( 51k paperdoll dps, 39.5% crit, + 246% crit damage, 1.4 aps, no IAS) if I stand still to channel ray of frost on a singel target without ever stopping I see a variance (excluding first tick) of 30k-120k with the average tick value being in the 60-80k range, no dynamo involved.
Some of it can be explained with the weapon damage range ( I have a ~400-700 sword plus a ~100-350 offhand, so base damage variance is ~500-1050) but not all.

Good Job and thank you.
you saved me a lot of work there, tho i'd like to know your observations as to how the crit / critdmg affected the numbers of the hydras, since i always only saw what seemed to be + 50% crits on my arcane hydra.


I'll have a look at what numbers I'll see with an arcane hydra once I get back from work, should be easy to see with +246% crit damage
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90 Tauren Paladin
13145
Thank you for this really, I knew it affected blizzard and hydra but I didn't have the tests to back it up.
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Yeh thank you for the info but really an official post about critical hits for those spells would be appriciated, i like most am still a little doubtfull since crits usually show in yellow exept for those spells in question.
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But you can ELIMINATE WEAPON DAMAGE RANGE from the equation and see what is really happening with ZERO base damage variance ... All you need is a amulet "of destruction" with +9 min damage and a weapon with max damage - min damage < 9 .... (and lvl 54 Wizard which I don't yet have atm ..)
Edited by peddroelm#2402 on 08/06/2012 16:10 BST
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90 Worgen Druid
12260
I've had a look at the other hydras (mammoth one excluded), they all critted for +50% damage despite my +246% crit damage increase, they critted often enough that my crit chance was clearly used.
I'll look deeper in the venom one
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90 Worgen Druid
12260
ok so, act 1 inferno, weapon used is a cracked light crossbow witha damage range of 6-6
dpswise, stats are:
set1 : 1394 int, 29.5% crit, 129% crit damage, paperdoll dps of 119.87
set2: 1382 int, 29.0% crit, 183% crit damage, paperdoll dps of 131.84

target mob: some quill fiend in the "old ruins" zone, they were stuck so they made it easy to stack the hydra without losing ticks

set1 hydra max tick experienced: 89, this for about 7-8 hydra recasts, switched item when the quill fiend got to 50% hp
set2 hydra max tick experienced: 112, note that the item switched was a single amulet, I lost both a bit of int and 0.5% crit to gain 55% crit damage.

further tests: single small zombie, aggroed it and stood still while a waiting for a single hydra to do it's full duration damage, calculated the sum of all the damage it did for that single cast

set1 hydra damage : 2361, 2326, 2319, 2300
set2 hydra damage : 2340, 2371, 2208, 2319

I don't think we can have a conclusive answer, but sicne I find it unlikely that it behaves differently from the other hydras, I find it likely it doesn't apply crit damage (<-sad)

a recheck on blizzard : 210% of weapon damage at 1382 int and 6-6 damage range would be ~186/7 damage over the full duration.

if crit damage was 50%, "average" damage expected for 29% crit chance would have been
187*0.61 + 187*0.29*1.5 = ~195, highest damage attainable assuming all cirts would have been 187*1.5 = ~280

for sake of completion, the familiar (no rune) hits for ~17-19 and crits for ~48-53, so it is affected by critical damage
at crit damage of +183%, expected average damage per full cast is 187*0.61 + 187*0.29*2.83 = ~267, with highest possible being ~529

single cast full duration damage results : 295, 318, 284, 316
Edited by ciopo#2924 on 09/06/2012 12:49 BST
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That sucks, I was stacking crit and now half my dmg doesn't benefit from it.
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Because this is contrary to my previous test results, I went back again for my own tests.

I used the following setups:

Setup 1: 2.5k dps, 50% crit damage, 21.5% crit.
Setup 2: 2.5k dps, 93% crit damage, 21.5% crit.

Lightning hydra result shows that both setups deal similar crit and non-crit hits. The crit hits are dealt at 50% increased crit damage. Venom hydra result is the same: the two setups produce the same max stack ticks (1700~) on a stationary enemy.

The result confirms what was previously known: your hydra's damage is normalized to your character sheet dps, disregarding your other stats. The only new discovery here for me is that hydras that can crit only crit for 50% additional damage. However, their base damage is still based on your character sheet dps, and crit damage affects this dps number.

Conclusion: your character sheet dps determines your hydra dps.

EDIT: A more thorough and interesting way to test this would be to use 3 different setups at the exact same dps, one achieved mostly using crit damage and crit chance, one achieved using no crit damage, and the last using no crit damage or crit (all IAS and/or int). In the case of venom hydra, all three setups should produce the same tick damage. Other hydras that can crit should give different per-hit numbers accordingly, both crit and non-crit, since their dps should be the same.
Edited by Errrrrrr#1411 on 15/06/2012 23:57 BST
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Thank you for this
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85 Blood Elf Paladin
7210
Wouldn't it be usefull to test with arcane power regen on crit items?...

You could empty your arcane power and then see if hydra ticks actually increase it. If they do then hydra would "actually" crit
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90 Draenei Death Knight
7800
OK so crit chance DOES work on hydra and blizzard, but do they trigger critical mass?
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And can Blizz/hydra crits trigger the AP gain stat from an item?
If they do, does this have any hidden modifier?
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