So, my shiny new computer has built in SATA RAID, and I've got two SATA disks for it. My question: should I configure the two drives for striped (RAID0) operation, or as separate volumes?

I'm looking for performance, rather than reliability -- important information will be stored on a RAID5 array in another PC, which is backed up semi-regularly.

My expected usage will be gaming, Visual Studio 2005, and potentially Microsoft Virtual Server or VMWare.

I was going to opt for RAID0, for simplicity, but someone I was talking to yesterday said that this only makes streamed reads faster, and that I'd get better performance by putting the OS on C: and data and virtual hard-disk images on D:, where the drives can seek independently of each other.

Thoughts?