If you can wait for the Conroe E6300 (1.86GHz) and spend a little bit more money you can get much better performance.
The Pentium D 805 clocked at 4.0GHz is about the same speed as the Pentium D 930 or an Athlon X2 4600+; depending on the benchmark.
The Conroe E6300 at stock speed is as fast as an Athlon 64 4400+ for applications. But when it comes to games, it performas at least as well as the X2 4800+ at stock speed. It has been overclocked to 2.4GHz on air.
Conroe also consumes less power and produces less heat.
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