Re: Pentium D 945 w/ SSD or 2x Xeon Prestonia w/ 15K SCSI?
Yes, if it is a good SSD with high speeds.
AKA OCZ Vertex or something with 240Mb/s+ speeds.
Check HDD and SSD reviews for read/write/burst speeds.
For a server all of the above can be important.
Burst definitely though.
(I've heard the Samsung Spinpoint F3 SATA II 7200RPM HDD's have very impressive burst speeds compared against old 15,000 rpm SCSI drives.)