So my local apple store has a 4gb 11" air in stock, which I want, but it is the 1.6 version. Im wondering if this is worth the extra money or if I should just order online.
Thoughts?
Nope.. do your research.
The difference in scores between the 1.4 and 1.6 is less than 7%.
Not really worth it.
The tests I saw were 960ish vs 1020ish a difference of 60 points out of about 1000. I need to find those benchmarks.
The CPU is not the bottleneck, 4gigs will net your more performance than the small bump in CPU speed. With the solid state storage, the MBA feels very, very fast. I have used the 11" 1.4/2/128ss and it's crazy how fast that little machine is. I ended up swapping to the 13" 1.8/2/256 as I decided to get all the storage I could onboard vs carrying additional storage as I travel.
CPU's have been basically waiting on traditional storage speeds to catch up for a long time, this type of solid state storage brings things into perspective of how much overkill the CPU speeds have been for the avg user. Power users (if you have to ask if you are, your not) will always need the quad core and have programs that take advantage of them, the rest of us will see huge speed increases by simply using solid state storage with current CPU's.
I went back and forth on this as well and finally decided on the 1.6 - in fact, I'm typing this post on it now! For me, I decided that $100 wasn't that big a deal when I was already spending $1300.
Also, I occasionally do play World of Warcraft on my laptop when I travel and I figured the extra CPU power might be a benefit then. Every little bit helps and even a few extra frames per second in a game can make a world of difference (no pun intended) when it is relatively low to begin with.
But, as others have said, if the extra $100 expense would be a burden to you financially, then don't do it. If it really isn't a big deal to spend the extra $100, then why not do it since it cannot be upgraded later on?
Good luck!