It does take a decent machine to run it. The minimum required memory (which I think is 1.3GB) is going to make any PvP hard. My machine works great with 2GB memory though.

So far I've only gotten to level rank seven, so I haven't explored much. But so far there's the basic stuff like tons of quests and exploring, then there are public quests (which I love), RvR areas, RvR scenarios, PvP. In addition to being rank seven, I'm renoun rank six and have full influence in Dark Elf chapter 1 and 2. You also get a job rank once you get a job (butcher, scavenger, etc), and your guild gets a rank.

I haven't yet figured out how the actual "war" works since I haven't gotten very far, but it looks cool.

So, basically, there's lots to do. I think a lot of people are biased against it because they <3 <3 WoW, but I thought WoW was lame when I played the beta, not to mention ugly, so I <3 <3 WAR.