NEC rolled out the first model of the UP4800 UNIX server series, the UP4800/520, in April 1991. The 520 was powered by the RISC-based R3000 microprocessor produced by MIPS Computer Systems. Designed to be a core network system machine, the 520 provided database functionality, online transaction processing functionality, and printing functionality.
Features of the NEC UP4800/520:
- (1) Featured the R3000 RISC processor, which performed computations at a remarkable 33 MIPS
- (2) Included substantial amounts of onboard memory and magnetic disk capacity, and could be expanded to house as many as 110 phone lines
- (3) Included enhanced operational controls, such as automated operational functions and remote operational functions
- (4) Delivered high reliability through redundant operational functions that supported dual-CPU multicomputer systems
| Model name | UP4800/520 |
|---|---|
| Processor | R3000, 33 MHz |
| Floating-point unit | R3010, 33 MHz |
| Main memory | 64 MB - 320 MB |
| Primary cache | Instruction: 64 KB, Data: 64 KB |
| Secondary cache | 256 KB |
| Magnetic disk | 662 MB - 31 GB |
