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HP Integrity rx4610

Quick Facts
CPU 2-4 Itanium
733-800MHz
Caches 32KB L1
96KB L2
2.0-4.0MB L3
RAM 64GB
Drives 2 SCSI
1 IDE
1 FD
Expansion 8 PCI 64/66
2 PCI 64/33
Bandwidth CPU 2.1GB/s
Mem 4.2GB/s
I/O 2.1GB/s
I/O 10/100E
VGA
SCSI
2 USB
2 serial
parallel
2 PS/2

Overview

Time of introduction: 2001
Discontinued: Fall 2002

The Integrity rx4610 was one of HP’s first-generation Itanium offerings and the first HP Itanium server, based on up to four Merced Itanium (1) processors and integrated into a 7U 19″ rack-mountable case. The rx4610 offered many I/O and expansion options with ten PCI slots on four PCI buses (attached to 2.1GB/s of I/O bandwidth) and up to 64GB of main memory but was limited to only two internal SCSI drives. The rx4610 was centered around the Intel Itanium reference architecture — the 82460GX chipset, which looks like a mix of (i386) PC-style (with Frontside Bus to the processor) and PA-RISC (I/O ropes from the central chipset connect to PCI converters) platforms. The other HP system with Merced processors and the 82460GX was the HP i2000 workstation. Both the i2000 and rx4610 were rather slow and buggy, when compared to the contemporary PA-RISC cousins.

Prices at time of introduction: about $25,000 (733MHz base system)/$37,000 (800MHz base system) to more than $45,000 (larger systems)

Internals

CPU

No. CPU Type Clock L1 (I/D) L2 (I/D) L3
2-4 Itanium 1 Merced 733MHz 16/16KB 96KB 2.0MB
2-4 Itanium 1 Merced 800MHz 16/16KB 96KB 4.0MB

L1 and L2 caches are on-die, L3 is off-chip

Chipset

The rx4610 is based on Intel’s 82460GX chipset centered around four main components:

  1. 82460GX SAC (System Address Chip) is the central chipset part:
    • System bus (FSB) for up to four processors — 2.1GB/s (the SAC connects to the address and control parts of the FSB)
    • Four I/O channels to which the PCI buses attach (via the WXBs/PXB) — each channel is 533MB/s
    • Connection to the SDC
    • Address/control access to the main memory
  2. Three 82460GX WXBs (Wide eXpansion Bridges) which connect the PCI 64/66 buses via three I/O channels to the SAC
    • One I/O channel connects to two PCI 64/66 slots
    • One I/O channel connects to three PCI 64/66 slots
    • One I/O channel connects to three PCI 64/66 slots and the SCSI controller
  3. 82460GX PXB (PCI eXpansion Bridge) connects the PCI 64/33 bus and core I/O (Ethernet LAN, PS/2, parallel, serial, IDE, USB, VGA) and the baseboard management controller via one I/O channel to the SAC
  4. 82460GX SDC (System Data Chip) is the central memory data controller:
    • It connects to the data part of the FSB system main bus
    • Has a private link to the SAC (PD)
    • Connects to the memory subsystem (data transfers, in contrast to the SAC’s Address/control access)

The rest of the chipset is made up of standard (third-party) I/O components:

Buses

Memory

Expansion

Drives

External Connectors

References

Operating Systems

Benchmarks

Model SPEC2000, int SPEC2000, fp SPEC2000
rate, int		 SPEC2000
rate, fp
rx4610
733MHz 2MB		 625
2-CPU: 		7.2
2-CPU: 12.7
4-CPU: 20.1
rx4610
800MHz 4MB		 379 701 4.4 8.1
2-CPU: 14.2
4-CPU: 22.4

Compare these with other results on the Benchmarks page.

Physical dimensions/Power

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