Richardson, Texas--March 19, 1998--Cyrix Corp., a NationalSemiconductor company, introduced the Cyrix 6x86MX PR266 processor,demonstrating it publicly for the first time at CeBIT in Hanover.
The 6x86MX PR266 processor uses proven socket 7 designs that provide support for SDRAM, 66-MHz PCI, and AGP. All Cyrix 6x86MX processors include performance-enhancing Level 2 cache and full MMX support.
The 6x86MX processor provides Winstone 98 performance on par with similarly configured Pentium II processor systems running at266 MHz on Microsoft Windows 95. The 6x86MX processor's Pentium II-level performance comes from its advanced architecture, which incorporates an enhanced 64k unified cache and a 512 entry branch target buffer (BTB). In addition, the memory management unit (MMU) consists of a two-level translation look-aside buffer (TLB) that is capable of storing up to 384 unique memory block addresses. These features allow the 6x86MX processor to satisfy a higher percentage of memory accesses on-chip, reducing the need to access slower off-chip memory.
The 6x86MX processor is currently manufactured on IBM Microelectronics' 0.35-(m five-layer metal CMOS process. NationalSemiconductor has successfully produced functioning 6x86MX processors on its 0.25-(m process at its pilot manufacturing facility in Santa Clara, Calif. Volume production is expected in thesummer of 1998 at the National plant in South Portland, Maine.
Systems based on the 6x86MX PR266 processor will be availableinitially through a number of direct channel PC manufacturers.
The 6x86MX PR266 processor is priced at $180 in quantities of1,000. Cyrix and PC manufacturers are working closely with major motherboard suppliers to expand availability of systems based on the 6x86MX PR266 processor. General availability is expected late in the second quarter of this year.
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