Honestly, either one will get the job done. Be it the AMD or the Intel CPU. The Intel CPU I recommended to you is a quad core but it "pretends" to have 8 cores so its 4 real cores + pretend cores.
It gets complicated, but the FX-8150/8120s technically have 8 integer cores, but they are grouped in packs of 2 per "module" and they share some of the parts that a "core" would normally have for itself.. So architecturally speaking, I guess you could say its also a quad core that "pretends" to have 8 too.
Heavily threaded work like what your mom wants to do is actually one of the things that the FX does pretty well.
If you haven't seen this article, you might check it out before committing though.
http://www.hardocp.com/article/2011/10/11/amd_bulldozer_fx8150_desktop_performance_review/10
Either way, like I said, both of them will do the job for you. As for gaming, it is only certain games that the FX-8120/8150s have trouble with. Most games give the video card more of a workout than the processor.
As far as what board to get. I have board number 2 (the sabertooth), I absolutely think its wonderful. The Asus Crosshair V is pretty good too, but honestly its not any better than the sabertooth. They both have pretty much the same features. And the Sabertooth actually has a better warranty. (5 years vs 3 years)
As far as upgrades, in a few months AMD will be releasing PileDriver (FX-8350 and FX-8320) these will be upgraded CPUs that will work on the same motherboard, (I'm waiting for one myself) AMD's goal was to improve them by 10%, Tom's Hardware got a "sneak peek" at them, and it looks like they're going to get 15%, not bad.
Oh and about Apple. I think that many people like Apple because it has circular pixels which is better for designing. It looks pretty. Also viruses don't effect Apple much.
I don't know about circular pixels, thats not one I've ever heard before. The virus thing makes sense though, I don't know much about Apple I confess, but I've used Linux for several years. I know that the way Windows is programmed its inherently more vulnerable to a virus "bringing the whole house down" than a linux system.
This is off topic but I'm really curious, why do you guys all have cats as your profile picture? I have nothing against cats I'm just curious.
Pure coincidence as to why both of us have our cats as our avatars, some people just really love cats :lol: