Intel unveiled a 3GHz Pentium 4 today along with a chip set that increases the bus speed to 800MHz, reports the Mercury News. A lot of PC manufacturers were lined up to announce superfast new systems, reports IDG News. But hold it: "shipment was halted after the company found over the weekend that a 'very small number' of the new Pentium 4 chips ... may not have been performing as expected", adds Reuters. On the good side, the new P4/chipset combo turns in a scorching performance and The Inquirer reviewer says its the fastest [x86] system on the planet.