Intel Corp. Monday said a mobile Celeron derivative of its new Pentium M processor is being shipped to Sony Corp. for a sub-notebook sold only in Japan.
A spokeswoman said the Celeron version, based on the Pentium M core, is available for other sub-notebook makers and "Intel is working closely with customers to meet their value segment needs for any form factors they may have."
The value segment mobile chip, called the Ultra Low Voltage Celeron A processor, operates at 600MHz, compared to the 900MHz lowest clock rate of Pentium M.
The spokeswoman declined to say if Intel would make the sub-notebook MPU now being sold to Sony a regular part of the company's mobile processor line.
She said sub-notebooks represent a niche market and the stripped-down version of the Pentium M core doesn't compete with the full feature processor that is part of Intel's Centrino brand notebook processors.
The mobile Celeron A has 512Kbytes of L2 on-die cache, half as much as the full-blown Pentium M. It also doesn't have the Pentium M's SpeedStep feature which reduces voltage and clock rate when the sub-notebook is operating off the battery.