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Motorola PowerPC processors dissipate <10W at 1GHz

Posted: 18 Feb 2003 ?? ?Print Version ?Bookmark and Share

Keywords:motorola? mpc7457? mpc7447? mpc7445? mpc7455?

The MPC7457 and MPC7447 PowerPC processors from Motorola Inc. run at speeds of up to 1.3GHz - the highest performing speed G4 host processors can attain for embedded applications. Both can perform at 1GHz while consuming <10W, making them suitable for high-performance, power dissipation-sensitive applications such as network control plane processing.

"By shipping a processor running at 1GHz with less than 10W, Motorola is providing a family of processors that will fit equally well in the nascent market of blade servers and the mature control plane board market - where the PowerPC instruction set architecture already dominates," said Eric Mantion, senior analyst with In-Stat/MDR.

Offered in a 483-pin CBGA package, the MPC7457 processor is footprint-compatible with the company's previous MPC7455 processor, providing a migration path for OEMs seeking higher performance for existing PowerPC processor-based applications.

The MPC7457 is designed to reach speeds of 1.3GHz with a core voltage of 1.3V and includes 512KB of on-chip L2 cache - twice more than the MPC7455 - with support for up to 2MB of backside L3 cache.

The MPC7447 processor delivers the same performance and features as the MPC7457, except that it does not provide backside L3 cache support. The MPC7447 is footprint-compatible with Motorola's MPC7445 device and is available in a 360-pin CBGA package.

Lower-power versions of the MPC7457 and MPC7447 processors are also available, operating at speeds of up to 1GHz with a core voltage of 1.1V.

Both 32-bit RISC processors are manufactured using the company's 0.13?m HiPerMOS silicon-on-insulator (SOI) copper interconnect process technology for increased performance compared to bulk CMOS technology, and low power consumption.

They feature the superscalar G4 core, which is capable of issuing four instructions per clock cycle (three instructions + branch) into 11 independent execution units. The processors also feature a full 128-bit implementation of the company's advanced AltiVec Single Instruction Multiple Data vector processing technology.

Both processors also offer eight instruction BAT and data BAT registers to support efficient embedded OSs through high-speed mapping of additional large blocks of data. The L1 caches on both processors support cache way locking of algorithms and codes.

They also offer full symmetric multiprocessing support that enables customers to allow customers achieve significantly higher system performance by scaling their embedded system designs with multiple PowerPC processors, the company claimed.

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