AMD Subpoenas Microsoft in Intel Case

AMD on Thursday issued a subpoena to Microsoft requesting information on its dealings with rival chipmaker Intel, including the Redmond company's decision to support 64-bit chips from both manufacturers. The subpoena stems from an antitrust case AMD filed last year accusing Intel of using illegal scare tactics and coercion.

AMD is seeking details on Intel's response to Microsoft collaborating with AMD on marketing initiatives, as well as discussions at Microsoft regarding AMD's financial viability. The chipmaker said the subpoena should come as no surprise, however, as Microsoft was included on an initial list. A key issue in the AMD case could be the rebates Intel offers computer makers who agree to use its chips exclusively.