So I recently did some experiments in the beta with some Gold Find gear and wanted to share what I found out. I did a quick video on it:
If you prefer text then here's what I did:
I gathered 215% gold find gear on my wizard. My estimate BIS lvl 13 GF gear that we can get in the beta at the moment is around 250% GF, so I'm fairly close.
I did ran through the Royal Crypt and smashed every vase, looted all loose stones, killed all the mobs etc and counted how much gold I got. The area contains about 150 of these objects and they all have a chance to drop gold. I chose the area since it doesn't change and the amount of objects is consistent enough to do benchmark tests such as this.
I did this five times with 0% GF and another five times with 215% gold find and collected the data to see what I could figure out.
Average total gold per run: 525
Gold stack drop range: 3-20
Average total gold per run: 1640
Gold stack drop range: 9-63
Using this data you can easily calculate and see how Gold Find works. Worth noting is that it does not increase the frequency of gold drop, but rather the amount of gold in each stack dropped. So with 215% GF I would never see a stack below 9 gold (in this area).
So the way it works is as follows:
Base gold dropped = 100%, this is the amount of gold that would drop if you had 0% GF.
You then add your GF% to that 100%. In my situation resulting in 315% gold drop.
You then take the base gold amount dropped, for example the ranges: 3-20 and multiply it with your gold drop value.
The exact range I found in stacks when wearing my 215% GF gear.Code:3 * 3,15 = 9,45 - (3,15 = 315%), 9,45 which is rounded down to 9. 20 * 3,15 = 63
It obviously works the same for total amount of gold found.
Which is close enough to the 1640 average I got from my five runs. With a bigger sample size these numbers would get even closer.Code:525 * 3,15 = 1653,75
So there you have it, a general formula could be written as followed:
B = Base gold dropped (at 0% GF).Code:B * ((GF / 100) + 1) = GD
GF = Total % gold find equipped.
GD = Gold dropped with gold find gear equipped.
I reserve myself for any failed calculations/bad formula writing