tnx for the reply. but there are a lot of free software and simulators which only runs on linux.
and maybe u can answer this question of mine too. With the money i am paying for a i5 2.4 mac pro i can get a dell i7 1gb graphic and .... . Y should i pay this money to buy a mac???
sorry i am contemplating on buying a mac or not
the main reasons are
Mac OS X
which is built on top of UNIX if you did not catch this from my other reply.
Build Quality
no other laptop manufacturer precision machines billet aluminum, any other premium laptop like a Dell XPS or Lenovo (IBM) Thinkpad use a combination of plastic, stamped aluminum/carbon fiber (carbon fiber is rare), and many times magnesium chassis (on the better business class notebooks). The fact that these other laptops' case and chassis are built from several parts means, there is more tolerance in the build, the notebook will not be as rigid, and to be equal in strength, these windows laptops will have to weigh more.
So while aluminum is a softer metal, it is also light and incredible strong especially when forged from a solid billet. (If you cannot guess, I am very impressed by the build quality of Apple notebooks.)
Trackpad
Apple's trackpad is far and away better than anything from any other laptop manufacturer. Windows laptops are just beginning to receive multi touch support, and it is not good so far.
Usable Software Included (OR No Bloatware)
iLife (Garage Band, iPhoto, iDVD, etc...), XCode (Software Development Tools), plus the normal OS X software, iTunes, Mail, iCal, etc....
Apple does not install a bunch of trialware unlike most windows laptop manufacturers. These trialware whether you uninstall them or not have already started the process of junking up the windows registry.
Battery Life
MacBook Pro's battery life pretty much exceeded any other full fledged notebook. At the same time, the battery does not hang off the back of the notebook, nor add an extra 2 lbs to an already 5 or 6 lb notebook.
Better Support
U.S. phone support and being able to take it to an Apple Store when problems occur.
Then there is the issue that the Dell with the i7 and 1 GB Video Card, probably uses the quad core i7 versus the dual core i7 which means extremely short battery life and a notebook hot enough to burn you. Then not much software can take advantage of a quad core, by the time most software has caught up, that Dell will be old and slow.
With Apple, you are paying for a premium experience and premium hardware and that's what you get (Although some disagree about the hardware because its not bleeding edge). You have to just decide of its worth it to you.