Apple's wildly successful PowerBook and iBook products relied on Apple's previous generation G4 architecture, which was produced by Freescale Semiconductor, a spin-off from Motorola. Engineers at IBM had minimal success in making their PowerPC G5 processor consume less power and run cooler but not enough to run in iBook or PowerBook formats. As of the week of October 24, 2005, Apple released the Power Mac G5 Dual that features a Dual-Core processor. This processor contains two cores in one rather than have two separate processors. Apple has also developed the Power Mac G5 Quad that uses two of the Dual-Core processors for enhanced workstation power and performance. The new Power Mac G5 Dual cores run individually at 2.0 GHz or 2.3 GHz. The Power Mac G5 Quad cores run individually at 2.5 GHz and all variations have a graphics processor that has 256-bit memory bandwidth.