But this one refuses to die... it's amazing how fast a SSD makes a computer!
Well... with my Mac Mini... just installing more RAM dramatically improved performance. With more RAM, the Mac doesn't write to the hard drive as virtual memory, which speeds things up.
So, that's something I'm concerned about with the Mac Book Air. The new base model simply does not have enough RAM. And it's not like I can easily upgrade it later... unless I figure out how to solder new RAM to the motherboard.
From what I can tell, the MBA can do anything a regular desktop can do except maybe for gaming.
Wow... that statement makes me think of two things...
- What games couldn't it run?
- The Mac has games?!

About the Mac Game drought...
About a week ago, I tried Virtualization on my Mac Mini. I was running Fusion, Windows XP and Halo. It wasn't the best... pretty choppy actually... but almost close to playable. If the game was native, or if I boot up in Boot Camp, I'm thinking that it probably would have been OK... and I thought that the new Mac Book Air is much faster than my 2009 Mac Mini.
About existing Mac Games...
Why do you think it won't run games? I haven't tried it, but a lot of the Mac games have low system requirements. Star Wars: Knights of the Old Republic and World of Warcraft are popular Mac games, but the system requirements are low.
I don't know... I have pokey Mac Mini, but it seems so much faster than my PC... the one with more RAM and a better GPU. I actually put my PC in storage because it felt so slow next to my Mac Mini.... A TWO YEAR OLD MAC MINI!
I use my Mac for 3D rendering, app development, desktop publishing, web publishing and basic computer stuff - Internet, Email, music.
My main issue with the new MacBook Air is that it's expensive. The base model seems fairly inexpensive, but 2 GB of RAM is ridiculously low. A big help is that I use Pixelmator. I thought about switching back to PC, but I think I would really miss that program if I did. (Version 2.0 is looking sweet!)
Why would someone need something more powerful? If they're really impatient about progress bars, need lots of storage space, or they're playing high-end video games, they might want more power. Me, I'm actually starting to like the Mac Book Air. It's the 2 GB RAM limit that I see as one of the big issues, not processing power.