Parallels has released a new update for its Desktop for Mac software which now supports Intel-powered Macs with over 2GB of memory installed.

Desktop for Mac (US$79.99) also offers a new virtual disk cache option that lets users optimize either Mac OS X or the OS hosted on the Mac. The update also offers support for Windows Vista, so Mac users can run Microsoft’s forthcoming operating system on the same machine as Apple’s Mac OS X.

According to Parallels, the new Desktop for Mac software supports Mac OS X 10.5 Leopard, delivers better support for USB devices (including Windows Mobile 2005 and webcams), and delivers full support for OpenBSD 3.8 as a guest operating system.

More info here.