PA-RISC information - since 1999

HP 9000 725

Quick Facts
Introduced 1992 and 1994
Period Growth (II)
Series 700 Series
CPU PA-7100 (50, 75)
1 PA-7100LC (100)
50-100 MHz
Caches 128-512 KB
RAM 256 MB
Design ASP (50, 75) LASI (100)
Drives 3 SCSI
1 FD
Expansion 3 EISA (50, 75)
1 SGC/EISA (50, 75)
1 EISA (100)
3 GSC/EISA (100)
I/O Ethernet
SCSI
2 serial
parallel
VGA
HIL (50, 75)
SMD-10 (100)
audio

HP 9000 725 PA-RISC workstations were desktop-sized Unix computers, released in 1992. They were a smaller option to the large and expensive HP 9000 750 computers while still offering the same amount of I/O options. System design is based on 715 workstations in a slighty smaller desktop case with dimensions very popular in the early 1990s.

HP 725
725, Thomas Schanz CC BY-SA 4.0

725 were built in two different designs: one based on PA-7100 processors and HP ASP chipset. This original 725/50 was billed by HP as low-cost workstation for applications that require fast X Window System performance and 2D/3D wireframe graphics such as CAD, MCAD, CASE and publishing. All at price points comparable to PCs.

The second, newer 725 design was based on HP LASI chipset and newer PA-RISC LC processors, technically close to the pizzabox HP 9000 712 workstations. The 725/100 was a high-performance, cost-effective expandable desktop system. 725 workstations were never as popular however, in spite of good I/O options and a similar case and sizing to contemporary PCs (like HP Vectra).

System architecture

Processors

System CPU Speed L1 Cache
HP 9000 725/50 PA-7100 PA-RISC 32-bit 50 MHz 128 KB off-chip
HP 9000 725/75 PA-7100 PA-RISC 32-bit 75 MHz 512 KB off-chip
HP 9000 725/100 PA-7100LC PA-RISC 32-bit 100 MHz 1 KB on-chip and 256 KB off-chip

Chipset

725/50 and 725/75

725/100

System buses

Memory

Expansion slots

Storage

External ports

Operating systems

Pictures

HP 9000 725/100 HP 9000 725/100 HP 9000 725/100 HP 9000 725/100
HP 9000 725/100 HP 9000 725/100 HP 9000 725/100 HP 9000 725/100
HP 9000 725/100, Thomas Schanz 2016, CC BY-SA 4.0

Benchmarks

System SPEC95 int SPEC95 fp
HP 9000 725/50 1.53 2.46
HP 9000 725/75 2.51 3.85
HP 9000 725/100 3.76 4.06

Comparison to SPEC benchmark data from other contemporary Unix workstations:

Based on old SPEC92 and SPEC95 archives
System CPU SPEC95 int SPEC95 fp
HP 9000 C110 PA-7200 120 MHz 6.00 8.14
DEC Alphastation 250 DEC Alpha 21064A 266MHz 4.18 6.27
Siemens PCE-5S Intel Pentium 100MHz 4.04 2.35
SGI Indy MIPS R5000 150MHz 3.97 4.20
DEC AlphaStation 200 DEC Alpha 21064 100MHz 1.48 2.79
Sun SPARCstation 10 Sun SuperSPARC 40MHz 1.13 1.38

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Documentation

Product sheets