800 armor? That's overkill. The armor cap is 577 or something. Also, armor rating does nothing to elemental damage.
EDIT: It says 567 from the wiki.
LOL! The wiki is wrong or I just got an awesome bug I'm currently at 766 and have no enchantments on any of my armor I just have my full daedric set my armor tree nearly maxed out save for the respite perk. I'm currently at 87 on heavy armor (from normal play... not exploits) so when I get to 100, I should be over 800. I also haven't re-smithed my legendary set with any smithing buffs which I read are additive even with your smithing maxed out. I could potentially be closer to 900 by the time it's all said and done.
I honestly don't believe I got the latest update because till yesterday, it seems that I haven't been logged on to xbox live since early last week. I recently put a pin on my Live account so it doesn't log me on automatically. Long story short, no patch means working magic for me and it also means the guardian stone I have activated for 50% magic resistance is doing its job