Each MacBook's three models now has an Intel Core 2 Duo processor inside it, the San Jose (Calif.) Mercury News said. The entry model has a 1.83 GHz chip and the two other models contain the 2.0 GHz version. The MacBook line previously used Intel's Core Duo processors.
Apple, of Cupertino, Calif., also doubled the memory of its top MacBook and models to one gigabyte of SDRAM,increased hard drive space to 120 gigabytes for the high-end model and 80 gigabytes for the mid-priced version.
Apple said it is maintaining its prices on the three models: $1,499 for the higher-end version, $1,299 for the mid-level and $1,099 for the entry model, the Mercury News said.
Apple recently moved its iMac and MacBook Pro to the chips. Only the Mac mini, Apple's lower-end desktop computer line, still runs on Core Duo.