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4/380


Aliases  
Date  
CPUs 1
Clock speed 25 MHz
Processor CY7C601
Co-processor TI8847
MMU Sun-4,   16 hardware contexts
Motherboard 501-1316,   501-1742
On-chip cache  
External cache 128 KB:   write-through,   40ns cycle
Memory 56 MB / 72 MB,   1 GB / process virtual
1MB or 4MB x 9 30-pin 100ns synchronous parity SIMMs.
Speed 16 MIPS,   2.6 MFLOPS,   11.3 SPECmark89
Chassis type deskside
Bus (12) VME slots
Ports (1) SCSI.
serial.
Internal storage Room for SCSI disk in top of chassis.
Graphics  
Power supply  
Architecture sun4
OS's supported  
Notes 4/280 upgraded with 4/3xx CPU.
Cache similar to 4/2xx but write-through.
56M limit only for early versions of ROM.
Comments  
See also.. 4/280






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