Intel Pentium 4 processor 506 will be clocked at 2.66MHz and will include 1MB of L2 cache. The chip is expected to replace Intel Pentium 505 processor that has the same clock-speed and amount of cache, but does not have EM64T as well as Intel Hyper-Threading technology. Intel did not indicate whether it plans to enable the Hyper-Threading on the Intel Pentium 506 chip. The new product is expected to be 533MHz processor system bus LGA775 infrastructure compatible, but a new BIOS for a mainboard will be needed to take advantage of the EM64T.The Pentium 4 506 will start shipping on May 27 and mass shipments of the processor are expected for June 10. More info at X-bit Labs
Intel to launch Pentium 506 with EM64T

Intel announced plans to launch budget Pentium 4 processors with 64-bit technology. The Intel Pentium 506 will be clocked at 2.66GHz and will likely be priced below $163.