Item quality is checked in the following order:

Legendary
6-affix rare
5-affix rare
4-affix rare
2-affix rare
1-affix rare
magic item

Using the above example, when your roll ‘misses’ a higher-level item quality, the item generator proceeds to the next lowest item quality in the chain (in this case, checking to see if you got a 6-affix rare, then checking for a 5-affix rare, and so on). Your magic find bonus applies to each roll. If the same monster has a 10% chance to drop a 5-affix rare item and you have 50% magic find, you now have a 15% chance to get a 5-affix rare item.

I thought this was already posted by ... somebody before? I been reading for quite a while d in LYN that magic find increases chance of more affixes too.

Still dependent on iLvl which droprate is set.

+1.

Roll a level 63 rare with 200 dps..give me 10 affix also it will chiak sai.

But seriously....(without any concrete data at all...)...I doont feel MF improves a drop? Why..cause I used to farm with about 250% MF (5NV) ..getting lots of yellow but 99% crap. But I have now switched to survival build with about 145% MF..and you know what.... 3 legendaries in 1 day (but useless also)..and some nice stacked rares. So MF really helps??  

oh curry, another thing thou, from what ive observed, grand smith plans only drop on act3/4, so yeah...

have to look at the level of.drops based on the acts too...

so if comparing a high mf run in act 1 vs a low mf run in act3/4 then:-
farming in act 3/4 will get u generally more better gear since more lvl63s. .. while farming in act 1 will get u more lower level junk  but if get lvl63 items there is a good chance it will be better.

Act 1-2 still wins, even if Act 3 has more iLvl 63 drops, because

1. MF increases basic drop rate of rares,
2. MF also increases chance the rare has more affix

This double multiplicative makes Act 1 drop higher quality in general.

it's random..
my friend NV5 = 270 MF% farm at Act 3.. for hours already

1. he fight elite, call me join ingame..
2. i at RMAH sell my thing..
3. accept invitation, join the game
4. TP straight to him
5. he already killed the elite
6. i got 32% MF and din hit the enemy
7. i see chocolate2 shield and 1 rare
8. dafuq~ identified~ STORMSHIELD 24% block
9. my friend rageeeeeeeeeee... "ffffffffffffffuuuuuuuuuu!"
10. i leave game put RMAH pipu bought AUD69.99

MF% LJ  MF%

its random liao
whole bullshit MF% theory can gtfo liao

lulz, it's my luck then..
but happened alot to me already.. 
nice rare item even during NV stack 1-2 (dun wear any MF% gears, since my current gears let me farm anywhere in inferno solo)
normally Act 3 is the best.. chances for ilvl63 gears appear are of coz better.. and monsters are easier to kill than Act 4.. =)
and those items ilvl63 dropped in Act 3 normally all can be sold at AH min 100k/pcs
farming at Act 1 & Act 2 just boring and the loot sucks

Eh dont regret la.
Im pretty sure the mobs on higher level have higher chance to drop 6 affix.

this one i agree..
high MF% guarantee quality item?
bullshit 

The theory that mf in act 1 is better than no mf on act 3 only holds true if the base affix drop rates of elite are same throughout the acts.
Pretty sure it is not.

If I ask you how much base 6 affix drop rate for act 1 and for act 3, would you know?

Speculatively, the numbers could even be as extreme as for act 1 you have a base chance of 0.75%, and with 300%mf  youd get it up to 3%, while in act 3 you may already have a base of 4%
What youre proposing require base chance of act1 to be as high as act 3 which is in a perfect world, act 1 elites chance to drop 6 prop is 4% and same as act 3.Pretty damn sure that isnt the case.

If you approach from dev pov, youd ideally want a ratio which scales with the max mf across all act so it all ties up.
Thats why act 1 and act 2 was also buffed when act 3 was buffed.They dont simply put out random numbers.(hint:if youre a nerd, you can investigate the ratio using the buffed numbers from the changelog and slide in the max mf somewhere in the calculations too  )

Youd want to design the game to be somewhat like this:(just hypothetically)
Farming effectiveness of Act 1 with max mf = Act 2 with half the max mf = Act 3 without mf

So in a sense, a player ultimate goal would be farming in act 3 with a little mf by sacrificing offense/defense here and there.

The priority of the design should be that you sacrifice offensive/defensive stats in favor of mf, and there should be a threshold of which you are able to do so, which mf swapping completely destroys as you can go full brunt and still get the benefits of max mf+high ilvl drop rate+high base affix drop rate.

Thats why mf swap is so prevalent in act 3 and will be nerfed as it goes above the limiting shackle of drop rate ratio.
The multiplicative nature of mf means right now, act 3 swappers ARE WAY beyond the end of the spectrum in terms of drop rate.

Meh.Cant find any study on affix count, just this
http://www.diablofans.com/topic/57939-ongo...stical-insight/

Even if there were any study, Im 100% sure that they will find higher act have higher base affix drop rate,
unless blizzard dev are total morons and somehow make them the same across all acts.

I was just thinking randomly.

We are assuming that the %'age chance for multiple affixes from act3 vs act1 mobs is the same. What if it is different?

What I mean is this. We know that MF doesn't affect proportion of ilvl 63 items. However as per this thread, it affects the chance of getting higher number of affixes.

We are assuming that an act 1 elite has the same base %'age chance of dropping 6 affix as an act 3 elite. What if it's different?

Toe-Mah-Toe vs To-Mey-Do. Whichever way you want to look at it, has there been any announcement by the blue's confirming it either way? If it's not confirmed by blues, what makes you so sure that an act 3 mob has exactly the same base chance of dropping a 6-affix rare vs an act 1 mob?

i've found some gear in act1 with 7 affixes (although the most recent being a ilevel 57 tbh...)

*shrug* I'm just throwing out some possibilities. Personally I don't care either way since I farm only Act 1 & Act 2 cos I can't be arsed to die multiple times in Act 3/4 (and I'm lazy to gearswitch). Doesn't matter to me if you decide to dismiss the possibility outright just because "Blizzard hasn't said so."

Take this thread for example. Bliz only revealed that MF affects # of affixes like what, 3 or 4 days ago. So if someone came up with this theory 2-3 weeks ago, I suppose you would have also dismissed it outright "because Blizzard has not said anything about it?" If the entire community takes this stance we would still be wondering how exactly armor and resistance affect total damage reduction.

I don't *expect* you to do anything. You've concluded that Act 1 Farming >>>>>>>>> Act 3 & 4 Farming on the assumption that the base drop rate for Act 1 vs Act 3/4 mobs are the same. All I'm saying is that there is the possibility that Act 3/4 mobs may have a higher base chance to drop items with higher number of affixes.

No, I don't have any data to "back up my claims," because I am not making any such assertion. If you are happy to continue on this assumption because Blizzard has not given any such indication, by all means switch your farming to Act 1.

Discussion on MF http://redd.it/wrt3n

MF affects the number of affix in rare drops but noticable in a large scale only.

which route to farm in act 2? tonight after maintenance i gonna test farm run.

what is the best place to farm if i only have nv and no magic find%?