AB335A HP Intel Itanium 2 1.6-GHz 3MB Processor (rx2620)

AB335A is a 1.6-GHz single-core Intel Itanium 2 processor with 3 MB of level 3 cache, for the HP Integrity rx2620. HP calls it the rx2620 Itanium2 1.6GHz 3MB CPU. Its on-chip cache is 32 KB at level 1, 256 KB at level 2 and 3 MB at level 3, and a floating point coprocessor is included.

The rx2620 takes up to two single-core Itanium 2 processors, and processor speeds cannot be mixed within the same system. Every single-core processor for it has a 256-KB level 2 cache, a 32-KB level 1 cache, a 400-MHz system bus, single bit cache error correction, 50-bit physical addressing and 64-bit virtual addressing.

The rx2620 requires system firmware 3.17 or later for this processor; the revision is read at the EFI shell with the info fw command, and the release notice in the firmware download bundle holds the update instructions. The 6-MB version of the 1.6-GHz processor is AB334A, and the 1.3-GHz, 3-MB processor is AB336A.