X704
533MHz X704 Promotional Picture
Developer	Exponential Technology
Manufacturer	Hitachi
Type	Microprocessors
Introduction	October 21, 1996 (announced)
ISA	PowerPC
µarch	X704
Word size	32 bit 4 octets 8 nibbles
Process	500 nm 0.5 μm 5.0e-4 mm
Technology	BiCMOS, Bipolar
Clock	400 MHz-533 MHz
Package	BGA-356

X704 (stylized as X⁷⁰⁴) was a family of high-performance PowerPC microprocessors announced by Exponential Technology in 1996. At the time, these chips ran over twice the clock rate as Motorola's and IBM's (albeit not as fast in direct performance). Exponential took over 18 months to get their final product to market by which time most of their competitive advantage was lost. Exponential's chips were also caught in the crossfire between Apple and Macintosh clone manufacturers, which ultimately sealed their fate.

Overview

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Architecture

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Die Shot

Documents

• C. A. Maier et al., "A 533-MHz BiCMOS superscalar RISC microprocessor," in IEEE Journal of Solid-State Circuits, vol. 32, no. 11, pp. 1625-1634, Nov 1997. doi: 10.1109/4.641683