Interesting comparison and database performance test from AnandTech between AMD Opteron and Intel Xeon.
Over a year and half has passed since AMD announced their K8 architecture to the world, and what has changed? Well, “a heck of a lot” is the answer. The Opteron has proven itself as a worthy competitor to the infamous Intel Xeon line-up of processors, and Intel has been following AMD for a change, something no one could have predicted a few years ago. Dual-core processors are on the horizon; AMD demonstrated theirs with Hewlett Packard just a few weeks ago, and Intel demonstrated theirs at the Intel Developers Conference in September, 2004.