Does raising smithing over 100 do anything?

Question

Semi-related: Is it possible to boost skills beyond 100 points?

I bring this up because I just found the http://elderscrolls.wikia.com/wiki/Notched_Pickaxe.

I did test this myself, and I didn't seem to see any difference in improving my armor. Also note that the wikia page for the pickaxe specifically states that it can't be improved over 100.

Just want to verify with you guys, thanks!

EDIT

Thanks for the quick answers. Not only is it possible, you can disenchant the Notched Pickaxe and get 10 extra smithing points by enchanting it onto 2 weapons we can be dual wielded.

Answer 1

Yes, smithing over 100 has an affect on upgrading. In this answer I raised smithing to 130 via two items. That allowed me to increase the armor rating from 528 (@100 smithing) to 610 (@130 smithing).

Answer 2

Raising smithing above an effective value of 100 using items or potions does increase how much you can upgrade your items. Although there is no higher category than Legendary, you can still increase the numerical bonus.

You can test this by upgrading an item to Legendary without any gear or potions, then equipping items of +Smithing and drinking a potion, and upgrading the item on the workbench or grindstone (quickly, as the potion time limit does run down while you're smithing). You'll be able to upgrade a Legendary item even further.

Answer 3

The armor cap is 569 with 4 pieces of armor. And it is increased by 25 for each piece of armor you remove since each armor has a hidden 25 point bonus and it of course is lowered if you have a mask on. So any more then 569 is pointless plain and simple. In that sense 100 smithing isn't really needed if you've already reached 569 with 4 pieces of armor.

Answer 4

The notched pickaxe does not increase the effect of your smithing if you are already at 100. (I don't know for sure whether it has any effect if you are under 100 because smithing is one of the skills I maxed ASAP.)

I tested this by drinking a +143% smithing potion, equipping four pieces of +29% smithing clothing. When I went to improve my ebony mail, originally 126 armor rating, it increased to 404 armor rating.

I then equipped two notched pickaxe and drank another +143% smithing increase potion, and while still wearing my smithing clothing, tried to improve it again, but it did not increase further, staing at 404 armor rating.

I have 100 enchantment, 100 smithing, and 91 alchemy. (I know, if i had 100 alchemy, I would have 150% smithing potions, but alchemy is a pain to train.)