PA-RISC information - since 1999

HP 9000 715

Quick Facts
Introduced 1992 and 1994-1995
Period Growth (II)
Maturity (III)
Series 700 Series
CPU (33, 50, 75):
PA-7100 32-bit
(64, 80, 100):
PA-7100LC 32-bit
33-100 MHz
Caches 128 KB-1 MB L1
RAM 192 MB (33)
256 MB (others)
Design ASP (33, 50, 75)
LASI (64, 80, 100)
Drives 2 SCSI
1 SCSI/FD
Expansion 1 SGC (33, 50, 75)
1 GSC (64, 80, 100)
I/O Ethernet
SCSI
2 serial
parallel
VGA
HIL (33, 50, 75)
SMD-10 (64, 80, 100)
audio

HP 9000 715 are 32-bit PA-RISC workstations from HP from the mid-1990s. Often used for technical design, CAD/CAM and engineering, the 715 were powerful, expandable HP-UX systems. They were popular computers when Unix workstations were used for technical computing in the 90s.

HP 9000 715
© Hewlett Packard 1994

HP 9000 715 were marketed against other Unix workstations of the 90s: SGI Indy, DEC Alpha, IBM RS/6000. With their advanced video adapters, 715 were often used for graphical (2D and 3D) and video editing.

There were two different 715 designs. Early 715 versions were based on HP ASP chipset with PA-7100 CPUs: 715/33, 715/50 and 715/75 with Apollo branding (the 715/33 was one of the slowest and worst PA-RISC workstations ever). The second generation was more modern based on HP LASI design with PA-7100LC CPUs: 715/64, 715/80, 715/100 and 100XC, close to the pizzabox HP 9000 712 workstations, the 100XC being a rather fast machine for the 1990s.

HP 715/64 running NeXTSTEP
715 NeXTSTEP, Thomas Schanz CC BY-SA 4.0

HP marketed the LASI HP 9000/715 as supporting bi-endian switching for current and future operating systems, a reference to aborted Windows NT PA-RISC and other 1990s plans.

Billed by HP as having easy installation, upgradability, expansion, and serviceability, HP 9000 715 workstations were handy Unix computers for the 1990s and supported NeXTSTEP on PA-RISC well.

Architecture

Processors

System CPU Speed Cache
HP 9000 715/33 PA-7100 PA-RISC 32-bit 33 MHz 128 KB off-chip
HP 9000 715/50 PA-7100 PA-RISC 32-bit 50 MHz 128 KB off-chip
HP 9000 715/64 PA-7100LC PA-RISC 32-bit 64 MHz 1 KB on-chip and 64 KB off-chip
HP 9000 715/75 PA-7100 PA-RISC 32-bit 75 MHz 512 KB off-chip
HP 9000 715/80 PA-7100LC PA-RISC 32-bit 80 MHz 1 KB on-chip and 256 KB off-chip
HP 9000 715/100 PA-7100LC PA-RISC 32-bit 100 MHz 1 KB on-chip and 256 KB off-chip
HP 9000 715/100XC PA-7100LC PA-RISC 32-bit 100 MHz 1 KB on-chip and 1024 KB off-chip

Chipset

715/33, 50 and 75 (first version, ASP)

First version of 715 workstations with older architecture.

HP 715 ASP Architecture
715 ASP, © HP 1992

715/64, 80 and 100 (second version, LASI)

HP 9000 715 workstations with PA-7100LC 32-bit processors use HP LASI, a custom and highly integrated HP chipset, which combines many functions and I/O on a single chip. Together with the on-CPU memory controller (MIOC), this resulted in a very integrated system design.

HP 715 ASP Architecture
715 LASI, © HP 1994

HP LASI was primarily designed for cost-reduction while still providing all required I/O functions in a single chip. It was used as the main system controller in most PA-7100LC and PA-7300LC systems.

System buses

Expansion

Memory

I/O slots

Storage

I/O ports

Operating systems

Pictures

HP 9000 715/100XC HP 9000 715/100XC
HP 9000 715/100XC, Thomas Schanz 2013, CC BY-SA 4.0
HP 9000 715/100 HP 9000 715/100 HP 9000 715/100 HP 9000 715/100
HP 9000 715/100, Thomas Schanz 2010, CC BY-SA 4.0
HP 9000 715/80 HP 9000 715/80 HP 9000 715/80
HP 9000 715/80, Thomas Schanz 2013, CC BY-SA 4.0
HP 9000 715/850 HP 9000 715/850
HP 9000 715/50, Thomas Schanz 2013, CC BY-SA 4.0

Benchmarks

System CPU SPEC92
int
SPEC92
fp
SPEC95
int
SPEC95
fp
HP 9000 715/33 PA-7100 33 MHz 32.5 52.4 1.01 1.58
HP 9000 715/50 PA-7100 50 MHz 49.2 78.8 1.53 2.46
HP 9000 715/64 PA-7100LC 64 MHz 80.6 109.4 2.52 3.31
HP 9000 715/75 PA-7100 75 MHz 82.6 127.2 2.51 3.85
HP 9000 715/80 PA-7100LC 80 MHz 96.3 123.2 3.01 3.50
HP 9000 715/100 PA-7100LC 100 MHz 115.1 138.7 3.76 4.06
HP 9000 715/100XC PA-7100LC 100 MHz 132.2 184.6 4.55 4.70

HP 9000 715 with PA-7100LC processors were slightly faster than MIPS, Alpha, SPARC and Intel computers from the same time, but usually significantly faster in floating point, in SPEC benchmarks.

Based on old SPEC92 and SPEC95 archives
System CPU SPEC92
int
SPEC92
fp
SPEC95
int
SPEC95
fp
Intel Alder Intel Pentium Pro 150MHz 276.3 220.0 6.08 5.42
HP 9000 C110 PA-7200 120 MHz 167.0 269.0 6.00 8.14
DEC Alphastation 250 DEC Alpha 21064A 266MHz 198.6 262.5 4.18 6.27
HP 9000 735/125 PA-7150 125 MHz 136.0 201.0 3.97 4.61
IBM RS/6000 43P PowerPC 604 100 MHz 128.0 120.2 3.59 3.20
Sun SPARCstation 20 Sun SuperSPARC II 75MHz 125.8 121.2 3.11 3.10
Siemens PCE-5S Intel Pentium 100MHz 96.2 81.2 4.04 2.35
SGI Indy MIPS R4400SC 75MHz 88.1 96.6
DEC AlphaStation 200 DEC Alpha 21064 100MHz 74.6 95.2 1.48 2.79
SGI IRIS Indigo IP20 MIPS R4000 100MHz 57.6 60.3
Digital DECpc XL Intel Pentium 66MHz 51.6 47.5
Sun SPARCstation 10 Sun SuperSPARC 40MHz 50.2 60.2 1.13 1.38
HP Vectra VL2 Intel 486DX4 100MHz 45.8 23.1
Digital DECstation 5000 MIPS R4000 50MHz 43.2 42.1
Siemens PCE-4C Intel 486DX2 66MHz 35.8 16.1
Motorola 8000 Motorola 88100 33MHz 27.7 18.8
SGI IRIS Indigo IP12 MIPS R3000 33MHz 22.4 24.2

Documentation

Manuals

LED messages

Product sheets

ROM update

There is a firmware update available for the 715/64, /80 and /100.

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