In recent years, many high-performance microprocessors employ cache write-through policy for performance improvement. Multi-core chips also allow higher performance at lower energy. A multi-core processor implements multiprocessing in a single physical package. At the same manner it tolerance good soft errors. New cache architecture referred to as way-tagged cache to improve the energy efficiency of write-through caches. Cache write-through policy is inherently tolerant to soft errors because the data at all related levels of the cache hierarchy are always kept consistent.