If you install Windows via Boot Camp and dual boot, then the MacBook's Windows performance will be the same as a dedicated Windows machine of similar configuration. However, this will not be the case with virtualization software such as Parallels or VM Fusion. Mainly this is because the MacBook's GPU simply isn't as effective with virtualization. On the other hand there shouldn't be much difference in CPU processing power which is what SAS mainly needs. If you decide to use virtualization software then be sure to max out the RAM in the MacBook.
Windows on Intel Macs
There are presently several alternatives for running Windows on Intel Macs.
1. Install the
Apple Boot Camp software. Purchase Windows XP w/Service Pak 2 or Vista. Follow instructions in the Boot Camp documentation on installation of Boot Camp, creating Driver CD, and installing Windows. Boot Camp enables you to boot the computer into OS X or Windows.
2.
Parallels Desktop for Mac and Windows XP, Vista Business, or Vista Ultimate. Parallels is software virtualization that enables running Windows concurrently with OS X.
3.
VM Fusionand Windows XP, Vista Business, or Vista Ultimate. VM Fusion is software virtualization that enables running Windows concurrently with OS X.
4.
CrossOver which enables running many Windows applications without having to install Windows. The Windows applications can run concurrently with OS X.
5. Last is
Q. Q is a freeware emulator that is compatible with Intel Macs. It is much slower than the virtualization software, Parallels and VM Fusion.
Note that Parallels and VM Fusion can also run other operating systems such as Linux, Unix, OS/2, Solaris, etc. There are performance differences between dual-boot systems and virtualization. The latter tend to be a little slower (not much) and do not provide the video performance of the dual-boot system.
See MacTech.com's
Virtualization Benchmarking for comparisons of Boot Camp, Parallels, and VM Fusion.
Boot Camp is only available with Leopard. The Boot Camp Beta that was used with Tiger has expired and is no longer available for use. So contrary to the other poster's comment, Boot Camp isn't truly "free." You must purchase Leopard to get it.