. The successor to the 80386 processor, Intel 80486 (i486) added new important features:
Floating Point Unit was integrated with the processor
Internal clock doubling and tripling allowed the processor to run much faster in existing motherboards.
Power management features and SMM (System Management Mode) became a standard feature of the processor.
This is a clock tripled version with a 33MHz bus. The NV8T version is a 3 Volt part as opposed to the earlier 5V parts. It also have the cache enhancements.