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HP 9000/715
| Quick Facts | |
|---|---|
| Introduced | 1992 and 1994-1995 |
| Period | Growth (II) Maturity (III) |
| Series | 700 Series |
| CPU | PA-7100 (33, 50, 75) PA-7100LC (64, 80, 100) 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) |
| Bandwidth | ? |
| I/O | 10E SCSI 2 serial parallel VGA HIL (33, 50, 75) SMD-10 (64, 80, 100) audio |
The HP 9000 715 are 32-bit technical PA-RISC workstations from HP from the early to mid 1990s and some of the most popular HP 9000. Often used for Unix-based technical design, CAD/CAM and engineering, the 715 were powerful, expandable HP-UX systems, when Unix workstations were still popular for these uses.
They were marketed against the other popular Unix workstations of the 1990s – SGI Indy and Indigo, DEC Alpha, IBM RS/6000 and Sun SPARCstations, while looking slightly like 1990s desktop PCs. Since used advanced graphics adapters or had them integrated, the 715 were often used for graphical (2D and 3D) and video use cases.
HP 9000 715 workstations were sold in two different versions: The first 715 were based on ASP with PA-7100 processors: HP 9000 715/33, 715/50 and 715/75 were an early-1990s design and still marketed under the acquired Apollo
brand that HP used for a while for workstations. The 715/33 was one of the slowest and worst PA-RISC workstations ever.
The second 715 generation was more modern based on LASI with PA-7100LC CPUs: HP 9000 715/64, 715/80, 715/100 and 100XC were technically close to the pizzabox HP 9000 712 workstations. The 100XC was a rather fast machine for the 1990s. These 715 did not use the Apollo
branding anymore.
HP marketed these newer HP 9000/715 as supporting bi-endian switching for current and future operating systems
, probably a reference to aborted Windows NT on PA-RISC plans. Billed by HP with an easy installation, upgradability, expansion, and serviceability
, the 715 were indeed were handy Unix workstations for the 1990s.
| Model | Introduced | Price |
|---|---|---|
| 715/33 | 1992 | $4,995 |
| 715/50 | 1992 | $11,895 |
| 715/64 | 1994 | $10,000 |
| 715/80 | 1994 | $13,000 |
| 715/100 | 1994 | $19,000 |
| 715/100XC | 1995 | $21,000 |
The 715 were quite versatile computers sold at an attractive price point at the time that were often re-used at their companies for secondary Unix server or development roles, after their primary use like engineering and graphics was taken over by newer models or Windows NT computers.
After their second life at companies, many 715 were re-sold and found their way into growing open source RISC projects, becoming widely available there in the early to mid-2000s. They were a popular cornerstone of the 2000s hobbyist and open source scene and an affordable entry point into RISC and Unix workstations.
System architecture
Processors
| Model | CPU | Speed | L1 Cache |
|---|---|---|---|
| 715/33 | PA-7100 | 33 MHz | 128 KB off-chip |
| 715/50 | PA-7100 | 50 MHz | 128 KB off-chip |
| 715/64 | PA-7100LC | 64 MHz | 1 KB on-chip and 64 KB off-chip |
| 715/75 | PA-7100 | 75 MHz | 512 KB off-chip |
| 715/80 | PA-7100LC | 80 MHz | 1 KB on-chip and 256 KB off-chip |
| 715/100 | PA-7100LC | 100 MHz | 1 KB on-chip and 256 KB off-chip |
| 715/100XC | PA-7100LC | 100 MHz | 1 KB on-chip and 1024 KB off-chip |
Chipset
715/33, 50 and 75
First version of 715 workstations with older architecture.
ASP chipset
Viper memory and I/O controller
NCR 53C700 8-bit single-ended SCSI-2
Intel 82596DX 10 Mbit Ethernet controller
Intel 82350 EISA bus adapter chipset (EISA to GSC)
CRX graphics, 8-bit
Audit 16-bit CS4215 CODEC
Other I/O (serial, parallel, i8042)
715/64, 80 and 100
Second version of 715 workstations with modernized architecture.
LASI chipset, integrated
NCR 53C710 8-bit single-ended SCSI-2
Intel 82596CA 10 Mbit Ethernet controller
Harmony CD/DAT quality 16-bit stereo audio
Wax for EISA bridge, HP-HIL
Artist graphics, 8-bit
Other I/O like serial, parallel, HP-HIL, Floppy
» View a system-level ASCII-illustration of the chipset on the 715/64, 715/80 and 715/100.
System buses
GSC system level I/O bus
EISA additional expansion I/O bus
SCSI-2 single-ended narrow bus
715/33, 55, 75 PBus processor/memory bus
715/33, 55, 75 VSC main system bus
715/33, 55, 75 SGC expansion of the mainbus to the SGC expansion card
Memory
72-pin ECC SIMMs
Eight sockets for 8-32 MB modules
715/33 6 memory sockets
16 MB to 192 MB (6×32) or 256 MB (8×32) supported
Expansion slots
715/33, 55, 75 One slot for SGC (EISA formfactor) cards
715/64, 80, 100 One slot for GSC (EISA formfactor) cards
With a special HP adapter EISA cards can be used in the GSC or SGC slots
Often marketed and used as graphics workstations, the HP 9000 715 were often sold with HP graphics adapters like the HCRX for 2D or the high-performance CRX-48Z for 3D.
Storage
Two SCSI 3.5″ Fast-Narrow SE 50-pin hard drives
SCSI half-height 5.25″ Fast-Narrow SE 50-pin drive, externally accessible
External ports
SCSI-2 50-pin single-ended Fast-Narrow
Two serial RS232C DB9 (up to 115200 baud)
Parallel DB25
Ethernet AUI 15-pin
VGA HD15
715/33, 55, 75 HP-HIL connector for input devices
715/64, 80, 100 SMD-10 connector, to connect HIL and PS2
Four phone jacks (microphone, headphones and line-in and ?)
Operating systems
HP-UX 9.05 10.20, 11.00 and 11i v1 (the last two only on 64, 80 and 100)
NeXTSTEP
Linux
OpenBSD
NetBSD
Research: HPBSD
Research: Mach 4/Lites
Research: MkLinux
Research: OSF MK-PA
Benchmarks
| Model | SPEC92, int | SPEC92, fp | SPEC95, int | SPEC95, fp |
|---|---|---|---|---|
| 715/33 | 32.5 | 52.4 | 1.01 | 1.58 |
| 715/50 | 49.2 | 78.8 | 1.53 | 2.46 |
| 715/64 | 80.6 | 109.4 | 2.52 | 3.31 |
| 715/75 | 82.6 | 127.2 | 2.51 | 3.85 |
| 715/80 | 96.3 | 123.2 | 3.01 | 3.50 |
| 715/100 | 115.1 | 138.7 | 3.76 | 4.06 |
| 715/100XC | 132.2 | 184.6 | 4.55 | 4.70 |
The 715 were actively marketed against the Unix workstation competition of the 1990s, with several example benchmarks given:
| Model | SPEC92, int | SPEC92, fp | Processor |
|---|---|---|---|
| SGI Indy | 88.1 | 96.6 | R4400 75 MHz |
| SGI Indigo | 59.1 | 62.1 | R4000 50 MHz |
| DEC Alpha 3000LX | 63.5 | 76.5 | 21064 125 MHz |
| DEC Alpha 600 | 114.1 | 162.1 | 21064 175 MHz |
| Sun SPARCstation 5 | 57.0 | 47.3 | MicroSPARCII 70 MHz |
| Sun SPARCstation 20 | 73.6 | 84.8 | SuperSPARC 50 MHz |
References
Model 715 Service Handbook, Hewlett Packard 1995, A2600–90039 (PARISC-Linux archive)
Quick Reference Guide HP 9000 715 Workstations, Hewlett Packard 4/1994, 5962-9710LE (1000bit.it archive)
HP UNIX Workstations and Netstations ( mirror), Hewlett-Packard Company (1997: mirror accessed January 2024)
HP 9000 Models 715/64, 715/80, 715/100, and 715/100XC Workstations, HP Workstation Group ( mirror), Hewlett-Packard Company (1997: mirror accessed January 2024)
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