by equivalent I suppose i mean monetary. essentially i'm buying out of the macbook pro (pre 2012) state of computing and buying into the 'Air' state of computing.
those strange specs are due to my own upgrades. I added my own ram and my own harddrive to a stock machine.
r.
Well, if this is the 2009 version that was the first 13" unibody MBP, then my first estimate is wrong.
I think that moving over to the MBA would be a loss to you on storage space(but if that doesn't bother you) then I think your MBP could be worth around $750-$800(and that's if you have the box and accessories and other original supplies like the HDD). If someone was willing to trade their MBA for yours, then try and find someone with a previous generation one because Apple is selling a refurbished model now for $929.
Refurbished MacBook Air 1.7GHz dual-core Intel Core i5
Originally released July 2011
13.3-inch (diagonal) high-resolution LED-backlit glossy widescreen display
4GB memory
128GB flash storage
Thunderbolt port with support for up to 2560-by-1600 resolution
FaceTime camera
Intel HD Graphics 3000
with any generation of the air, you will sacrifice storage space and the ODD, but if your computing needs or desires have changed, then good luck.
A better option might be to just max out the RAM on that model and to remove the HDD you put it and even the ODD if you never use it. You could block the superdrive slot with a bracket and then just install a SSD instead. This would shave some weight off the computer and with maxed out RAM and a SSD, I think you'll be happier with the machine overall.
