Can I use OS X Lion with a Macbook?

Lion System Requirements

• Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
• 2GB of memory
• OS X v10.6.6 or later (v10.6.8 recommended)
• 7GB of available space
• Some features require an Apple ID; terms apply.

my macbookpro intel is Intel Core Duo, is that means i can't use OS X Lion?

You cannot. Min processor is Core 2 Duo

thanks for replying my comment.

is there any other way??like upgrading my processor, is that possible?

joebucin wrote:

is there any other way??like upgrading my processor, is that possible?

I've heard that it can be done (but Lion still may not install), but if you really want Lion that bad, better to get a new mini, or buy a refurb unit from Apple, or a used one on eBay

I have am older MacBook Air. Will that accept a LION upgrade?

Just to clarify, it is a 1.8 GHz Intel Core 2 Duo currently running 10.5.8

All MacBook Airs have at least a Core 2 Duo... so they all support Lion with respect to the processor. I'm not sure if the earliest Airs ever shipped with less than 2GB. Lion requires a minimum of 2GB (it's much happier with 4 though). If you have at least 2GB, you will be able to install. By "older" do you mean the 2010 model... or the original? While Lion will run okay on a 2GB system with an SSD, it will run very poorly on the older models that still shipped with hard drives. The hard drives used in those were always painfully slow and the excess disk swapping due to a relatively low 2GB of RAM would be a nightmare.