The Tech Report has taken a look at the newest offerings from Intel. They compare the dual-core Pentium D 820 and the new single-core Pentium 4 670 with some current processors of both AMD and Intel:

In many ways, the two CPUs Intel is introducing today are fundamentally similar. Both are based on the latest version of the Pentium 4's Netburst microarchitecture, both ride on an 800MHz front-side bus, and both are capable of 64-bit computing via Intel's EM64T extensions. But beyond these wide areas of overlap are deep differences in approach..



Link: Tech Report