HP 9000/725
| Quick Facts | |
|---|---|
| Introduced | 1992 and 1994 |
| CPU | 1 PA-7100 (/50, /75) 1 PA-7100LC (/100) 50-100 MHz |
| Caches | 128-512 KB L1 |
| 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) |
| Bandwidth | ? |
| I/O | 10E SCSI 2 serial parallel VGA HIL (/50, /75) SMD-10 (/100) audio |
Overview
These were designated to be smaller replacements for the old 750 servers while still offering the same amount of I/O options. They are technically based on their 715 workstations counterparts.
Internals
CPU
- 725/50: PA-7100 50 MHz with 128 KB off-chip L1 cache
- 725/75: PA-7100 75 MHz with 512 KB off-chip L1 cache
- 725/100: PA-7100LC 100 MHz with with 1 KB on-chip L1 and 256 KB off-chip L1 cache
Chipset
725/50 and 725/75
- ASP chipset
- Viper memory and I/O controller
- NCR 53C700 8-bit single-ended SCSI-2
- Intel 82596DX 10 Mbit Ethernet controller
- Intel 82C501AD Ethernet transceiver
- Intel 82350 EISA bus adapter chipset (EISA to GSC)
- Other I/O (serial, parallel, i8042)
- CRX graphics, 8-bit
- Audit 16-bit CS4215 CODEC
725/100
- LASI chipset
- NCR 53C710 8-bit single-ended SCSI-2
- Intel 82596CA 10 Mbit Ethernet controller
- Harmony CD/DAT quality 16-bit stereo audio
- Other I/O (serial, parallel, i8042)
- Wax chip (EISA bridge, HP-HIL)
- Artist graphics, 8-bit
- Other I/O (serial, parallel, Floppy controller, HP-HIL)
Buses
- GSC system-level I/O bus
- EISA additional I/O expansion bus
- 725/50, 725/75: PBus processor/memory bus
- 725/50, 725/75: VSC main system bus
- 725/50, 725/75: SGC expansion of the mainbus to the SGC expansion card
- SCSI-2 single-ended narrow bus (Fast on 725/100)
Memory
- 72-pin ECC SIMMs
- Takes 8-32 MB modules
- Eight sockets
- 32 MB (2×16) minimum, 256 MB (8×32) maximum
Expansion
- 725/50, 725/75: Three EISA expansion-slots,
One slot for either a SGC (EISA formfactor) or EISA card. - 725/100: One EISA expansion slot,
Three slots for either GSC (EISA formfactor) or EISA cards.
Drives
- One tray for one 3.5″ Narrow SE 50-pin SCSI hard drive
- One tray for one 3.5″ Floppy drive
- Two trays for one half-height 5.25″ Narrow SE 50-pin SCSI drive each, externally accessible
(725/100 supports Fast-Narrow drives)
External connectors
- SCSI-2 50-pin Narrow SE single-ended (Narrow-fast on 712/100)
- Two Serial RS232C DB9
- Parallel DB25
- Ethernet AUI 15-pin
- VGA HD15
- 725/50, 725/75: HP-HIL connector for input devices
- 725/100: SMD-10 connector, to connect HIL/PS2 with a special adapter
- Four phone jacks (microphone, headphones, line-in and ?)
References
Operating systems
Benchmarks
| Model | SPEC95, int | SPEC95, fp |
|---|---|---|
| 725/50 | 1.53 | 2.46 |
| 725/75 | 2.51 | 3.85 |
| 725/100 | 3.76 | 4.06 |