Sept 8 (Reuters) - Intel ( INTC ) announced a series of

high-level executive changes on Monday, including the departure

of Michelle Holthaus, the company's products chief.

The struggling U.S. chipmaker is also establishing a new

central engineering group led by Srinivasan Iyengar, a senior

vice president. In the expanded role, Iyengar will build a new

custom silicon business to serve a broad range of external

customers, the company said.

Naga Chandrasekaran, executive vice president and chief

technology and operations officer of Intel Foundry, will expand

his role to include Foundry Services, while Jim Johnson was

appointed general manager of Intel's ( INTC ) client computing group.

Kevork Kechichian has joined Intel ( INTC ) has executive vice

president and general manager of the data center group.