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Hewlett Packard PA-8700 (Piranha) processorsIntroduction: August 2001The PA-8700 is basically an enhanced and revamped PA-8500 core with some slight modifications. As all PA-8x00 CPUs before, it logically still is very close to the original PA-8000 core from 1997. All subsequent new CPUs from HP were based on this design and added several features and some slight modifications to it while retaining the basic PA-RISC version 2.0 core. The PA-8700 enhanced the on-chip L1 caches and the TLB significantly while switching to a new CMOS-process helped boosting the clock-frequency. The chip was at its time one of the largest available commercial CPUs and one of the first to be manufactured in a SOI (Silicon On Insulator) process. The PA-8700 was manufactured by IBM, in contrast to the PA-8500 and PA-8600, which were fabbed by Intel, after HP gave up its processor fabs long time ago. PA-8700 was used in A400-6X (rp2430), A500-6X, A500-7X (rp2470), C3650, C3700, C3750, J6700, L1500-6X, L1500-7X, L1500-8X (rp5430), L3000-6X, L3000-7X, L3000-8X (rp5470), N4000-6X, N4000-7X (rp7400), N4000-6X, N4000-7X, N4000-8X (rp7405, rp7410) and Superdome.
Source: www.openpa.net |
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