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February 17, 1987


By CBR Staff Writer

Two new models – J and K – of the IBM Series/1 4956 processor, feature a single processor card with 2Mb storage and high speed floating point capability, providing 67% greater processor performance than the current top-end Series/1 4956 Model J. The model J incorporates a new high speed – 1 MIPS internal throughput – processor with floating point accelerator. One 5.25 40Mb disk, plus two optional additional disks and one 5.25 1.2Mb floppy are also standard, with a second floppy option. The file controller supports four integrated devices. Seven input-output slots are available and universal power supply is standard as are extensive self-diagnostics and error recovery procedures. Field model upgrades from G10 and H10 will be available in July. A microprocessor driven 400Kb dynamic and self-optimising cache offers improved disk throughput. The Model K has the same new high speed processor as the model J, but is configured for full rack mounting with 14 slots. The IBM Series/1 4956 model J costs $23,000, and will be available May 1987 IBM Series/1 4956 model K, is also set for May at $17,000, and field upgrades from previous models will be available July 1987.

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