I've heard all kinds of ideas about how charisma affects resist rate so I decided to find out for myself. I picked an average song (with what I consider an average resist rate) and an average blue con mob with average magic resistance. I then varied my charisma and took a large sample size at each charisma level.
NOTE: Resist rate can vary wildly depending on songs, don't pay attention to the resist rate, pay attention to how much it changes.
Charisma -- resists/attempts - resist rate
-----------------------------------------------
80 -- 112/309 -- 36.2% (I had to catch the Rotting Plague to get it this low )
100 -- 111/314 -- 35.3%
120 -- 89/309 -- 28.8%
140 -- 98/319 -- 30.7%
160 -- 93/312 -- 29.8%
180 -- 76/304 -- 25.0%
200 -- 79/332 -- 23.8%
220 -- 77/330 -- 23.3%
240 -- 73/303 -- 24.1%
260 -- 67/310 -- 21.6%
280 -- 50/326 -- 15.3% (I'm capped at 280)
If anyone has a large stash of negative charisma items they'd be willing to loan me, I'd love to test out a charisma of 60 & 40 as well.
It almost looks like charisma's effect runs in bands rather than linear. Here's a wild guess on my part on how this works. I'm not a math guru by any means so I'm not even going to try and put numbers to this. 280+ charisma is obviously a pretty nice place to be.
Charisma -- Resist Rate
-----------------------------------
80 - 110 -- 0% (base)
110 - 175 -- slight reduction in resists
175 - 250 -- decent reduction in resists
250 - 275 -- good reduction in resists
275+ -- excellent reduction in resists
As always, your mileage will vary!
*edited for typos*
NOTE: Resist rate can vary wildly depending on songs, don't pay attention to the resist rate, pay attention to how much it changes.
Charisma -- resists/attempts - resist rate
-----------------------------------------------
80 -- 112/309 -- 36.2% (I had to catch the Rotting Plague to get it this low )
100 -- 111/314 -- 35.3%
120 -- 89/309 -- 28.8%
140 -- 98/319 -- 30.7%
160 -- 93/312 -- 29.8%
180 -- 76/304 -- 25.0%
200 -- 79/332 -- 23.8%
220 -- 77/330 -- 23.3%
240 -- 73/303 -- 24.1%
260 -- 67/310 -- 21.6%
280 -- 50/326 -- 15.3% (I'm capped at 280)
If anyone has a large stash of negative charisma items they'd be willing to loan me, I'd love to test out a charisma of 60 & 40 as well.
It almost looks like charisma's effect runs in bands rather than linear. Here's a wild guess on my part on how this works. I'm not a math guru by any means so I'm not even going to try and put numbers to this. 280+ charisma is obviously a pretty nice place to be.
Charisma -- Resist Rate
-----------------------------------
80 - 110 -- 0% (base)
110 - 175 -- slight reduction in resists
175 - 250 -- decent reduction in resists
250 - 275 -- good reduction in resists
275+ -- excellent reduction in resists
As always, your mileage will vary!
*edited for typos*