Disclaimer: The following question is loaded to the brim full of misconceptions on how spell costs and mana regeneration works. If you are new to mage stop reading or you may end up vomiting from the stupid. I have left the initial post in tact so that the veterans can chuckle at my incompetance.
Hey there Magey Folks,
I thought I would address this question to you because… well I just thought I would.
Every Point of Intellect that you have increases your Mana Pool by 15. This is a static number as far as I know.
Every Point of Intellect also increases your chance to crit with spells. This increase is entirely dependent on your level, as far as I know.
At level 80 with something along the lines of 500 Intellect(Int.), you will have 7500 Mana from that 500 Int., and some crit rating to go with that (~5-7%).
The question is, since spell costs are percent based, at which point does the stacking of Int become counter productive?
Since the costs are all percents, there seems to be no gain in having more Mana. As a matter of fact, having more spirit instead of Mana seems like a much much better idea. Theorectically you should be able to get tons of Mana regen, and with a small enough Mana pool have infinite spells. The thing is of course that more Int seems to decrease the effectiveness of your Spirit since Spirit gives a base number of regen, not a percent (So the difference between 20 Mana regained every 5 seconds and 3% of base mana regained per 5 seconds).
This is probably almost impossible to attain since there is hardly any gear out there that does not have Int coupled with Spellpower. I wonder if you could make up for the Crit from your Int.
Edit: Message editted to express the falsiness evident in original post.
Edited, Sep 18th 2009 4:05pm by Moonkissed