A9731A HP Intel Itanium 2 1.5-GHz 4MB Processor (rx4640)

A9731A is a 1.5-GHz single-core Intel Itanium 2 processor with 4 MB of level 3 cache for the HP Integrity rx4640. HP calls it the rx4640 Itanium2 1.5GHz 4MB CPU. On-chip cache is 32 KB at level 1, 256 KB at level 2 and 4 MB at level 3, and a floating point coprocessor is included.

Single-core Itanium 2 processors in the rx4640 have a 256-KB level 2 cache, a 32-KB level 1 cache, single bit cache error correction, 50-bit physical addressing and 64-bit virtual addressing. The spare processors for A9731A are A9731-69004, A9731-69102 and A9731-69103, each a 1.5GHz Intel Itanium 2 with a 400MHz front side bus and 4.0MB level-3 cache.

The rx4640 may need a firmware update for A9731A. System firmware 3.17 or later is required, the firmware revision is read in the EFI shell with the info fw command, and the update instructions are in the release notice in the firmware download bundle.

Processors in the rx4640 can be installed one at a time, in the sequence 0, 1, 2, 3, and processors cannot be mixed in the same system. The server takes up to four processors.