Neoseeker published a review of Intel's Pentium D 930.

This 65nm Dual Core part surprised us with its value. Value you say? That's right. Enthusiasts and overclockers will want to take note: we pushed this baby to 4.125GHz, a huge jump from its stock 3.0GHz speed using only stock air cooling! With that type of overclocking headroom this chip holds very well against even an X2 3800+.

Intel Pentium D 930 Review