Psystar offers two PCs, Open and Open Pro, that can run both Mac OS X and Windows Vista. Leveraging the OSx86 project, the Open and Open Pro is faster and cheaper than the Macs offered by Apple.
Psystar Open is powered by an Intel Core 2 Duo processor, up to 4GB of RAM, a 250GB hard drive and a DVD burner.
The Open Pro has a more powerful configuration. It is equipped with an Intel Core 2 Quad processor, 8GB of memory, and 750GB hard drive.
Psystar Open starts at $399 while the Open Pro starts at $999USD.