By Louise Piper

  Lion (10.7.0) Snow Leopard (10.6.8)Boot 1:32 1:25Compress a ~900MB File 0:51 0:59

Decompress a ~900MB File 0:10 0:09

Duplicate a ~900MB File 0:09 0:09

Encoder a Movie for iPhone in Quicktime X 0:56 0:53

Launch 9 Applications 0:59 0:37

Open 10 Tabs in Safari 0:15 0:17Total Time 4:43+ 4:29

• The following tests were performed on a 2.66 GhZ iMac with 4GB of RAM and a 1TB hard drive connected to the internet over Wi-Fi at a maximum speed of 60mbps.

Comparing lion with snow leopard

“THE SLOWEST MAC OS OF ALL TIMES AND ARGUABLY NOT THEIR BEST DEVELOPMENT.

I upgraded from Snow Leopard to Lion on a MacBook Pro and iMAC. On both starting the OS has become critically and painfully slow. Switching off has also slowed down too. Perhaps the reason is that Lion seems to be wanting to control too many things at the same time.”

Bad points of lion

Apple has introduced several ways for users to cope with window clutter—the problem of having too many documents and apps open on the screen at the same time. Exposé, which lets you quickly see all of your currently open windows, was introduced in 2003 with Mac OS X 10.3 (Panther). Dashboard, that separate onscreen space for tiny widget apps, appeared in 2005 with Mac OS X 10.4 (Tiger). Spaces, which let you assign apps to multiple virtual desktops, arrived in 2007 as a part of Mac OS X 10.5 (Leopard).

Mission Control in action. With Lion, Apple has combined all of these features into a single

interface called Mission Control

Good points of lion

Launch pad only on lion, i phone and i pad

App storeFor versions before lion

Biblographary

• http://lifehacker.com/5822435/lion-vs-snow-leopard-which-is-faster

• http://www.techradar.com/reviews/pc-mac/software/operating-systems/apple-os-x-10-7-lion-982954/review