8048x > AMDA80486DX4-90
Modified: March 11, 2005, 12:44 pm
Manufacturer:AMD
Model:Am486 DX4-90
Speed:90MHz
Type:80486
Data Code:9503
Introduced:1992
Transistors:1.6 Million
Package:168CPGA
Process:0.6 Micron
Architecture:32 bit x86 w/ FPU
Used in:Computers
Description:.
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 30MHz bus.
The 30MHz bus is very uncommon.
The NV8T version is a 3 Volt part as opposed to
the earlier 5V parts. It also have the cache
enhancements.