Processor Upgrades are the fastest way to provide a substantial performance boost and give your old computers a new lease of life. The main benefit of a processor upgrade is that in less than 5 minutes the performance of the system can be boosted by over 200%. Network and other settings are undisturbed and you can get back to work without any disruption. Upgrade your computer by replacing an existing processor with a new fast processor that provides the best performance.IBM offers this planar upgrade for 50 and 50Z models. It is a complete system board with IBM 486SLC2-50 and built in SVGA that uses existing drives.