AB637A | 1.0GHz PA-8800 processor upgrade – For adding a second processor module to the computer – Includes 2-way processor with 1.5MB L1 cache and 32MB L2 cache, power supply module, and instructions – Note: Processor speeds cannot be mixed within a system | HP 9000 Workstation C8000 PA-8900-PA-8800 | PROCESSOR |