Speculation is mounting that Apple is set to switch to a new generation processor made by IBM.
Apple has used Motorola microprocessors in most of its Macs since 1984, but rumours are circulating that it is the customer for IBM's set of next-generation processors, according to reports by Associated Press.
Like most powerful servers, the IBM PowerPC 970 can process data in 64-bit chunks as well as 32-bit chunks, and has been mooted as a way of solving Apple's clock speed problems.
The PowerPC 970 can also run software optimised for both 32-bit and 64-bit environments without emulation.
AMD plans to launch a similar 64-bit processor for desktops and servers next year.
Apple, Motorola and IBM have so far refused to comment about the possible switch.
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