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PA-RISC information - since 1999

HP 9000/735 and 755

Quick Facts
Introduced 1992
Period Growth (II)
CPU 1 PA-7100 99 MHz/
1 PA-7150 125 MHz
Caches 512 KB L1
RAM 400 MB (735)
768 MB (755)
Design ASP2
Drives 2 SCSI (735)
4 SCSI (755)
Expansion 1 SGC, 1 EISA, 1 spec (735)
2 SGC, 4 EISA (755)
Bandwidth ?
I/O 10E (or FDDI on 735)
2 SCSI
2 serial
parallel
HIL
audio

The HP 9000 735 and 755 were powerful technical and graphical PA-RISC workstations from the early 1990s. They use 32-bit PA-RISC 1.1 PA-7100 or PA-7150 processors — the latter in the fast (and expensive) 735/125 and 755/125 versions with 125 MHz.

Both 735 (desktop) and 755 (tower) have a solid and heavy desk-side case built with separate modules for I/O and CPU. These boards, along with EISA cages and the storage subsystem are built into so-called sliders that can be removed separately from the system.

The 735 and 755 have similar cases and architecture as their predecessors HP 9000/730 and 750. They support a large set of I/O buses, expansion options and drives with updated design.

The 735 was widely used as a FDDI node in Convex clusters and the 735/125 was a rather fast 1990s RISC workstations plus one of the fastest ever running NeXTSTEP.

Model Introduced Price
735/99 1992 $37,395
735/125 1992
755/99 1992 $58,995
755/125 1992

System architecture

Processors

Model CPU Speed L1 Cache
735/99 PA-7100 99 MHz 256/256 KB off-chip Instruction/Data
755/99 PA-7100 99 MHz 256/256 KB off-chip Instruction/Data
735/125 PA-7150 125 MHz 256/256 KB off-chip Instruction/Data
755/125 PA-7150 125 MHz 256/256 KB off-chip Instruction/Data

Chipset

System buses

Memory

Expansion slots

Storage

External ports

Operating systems

Benchmarks

Model SPEC95, int SPEC95, fp SPEC95
rate, int
SPEC95
rate, fp
/99 3.22 4.06 29.4 35.8
/125 3.97 4.61 36.3 40.9

References

Manuals

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