IBM confirmed that its PowerPC 970 processor, which is scheduled to begin shipping in the second half of 2003, has AltiVec-compatible execution units, as noted by a MacNN reader: “The 970’s multiple execution units including an AltiVec compatible vector processor are fed by an up to 900-MHz processor interface bus, which can deliver data at a rate of up to 6.4 GBps…In addition to high performance general -purpose processing, application-specific acceleration (such as multimedia) can be achieved through the AltiVec vector engine. Codeveloped by IBM, this engine extends the PowerPC instruction set with 162 Single-Instruction, Multiple Data (SIMD) instructions.”