Specifications

2 IBM Power 770 and 780 Technical Overview and Introduction
1.1 Systems overview
You can find detailed information about the Power 770 and Power 780 systems within the
following sections.
1.1.1 IBM Power 770 server
Each Power 770 processor card features 64-bit architecture designed with two single-chip
module (SCM) POWER7 processors. Each POWER7 SCM enables up to either six or eight
active processor cores with 2 MB of L2 cache (256 KB per core), 24 MB of L3 cache (4 MB
per core) for the 6-core SCM, and 32 MB of L3 cache (4 MB per core) for the 8-core SCM.
A Power 770 server using 6-core SCM processors will enable up to 48 processor cores
running at frequencies of 3.72 GHz. A system configured with up to four CEC enclosures
using 8-core SCM processors will enable up to 64 processor cores running at frequencies up
to 3.30 GHz. The Power 770 server is available starting as low as four active cores and
incrementing one core at a time through built-in Capacity on Demand (CoD) functions to a
maximum of 64 active cores.
A single Power 770 CEC enclosure is equipped with 16 DIMM slots running at speeds up to
1066 MHz. A system configured with four drawers and 64 GB DDR3 DIMMs supports up to a
maximum of 4.0 TB of DDR3 memory. All POWER7 DDR3 memory uses memory
architecture that provides increased bandwidth and capacity. This enables operating at a
higher data rate for large memory configurations.
The Power 770 has two new integrated POWER7 I/O controllers that enhance I/O
performance while supporting a maximum of six internal PCIe adapters and six internal small
form-factor SAS DASD bays.
The Power 770 features Active Memory Mirroring (AMM) for Hypervisor, which is available as
an optional feature. AMM guards against system-wide outages due to any uncorrectable error
associated with firmware. Also available as an option is Active Memory Expansion, which
enhances memory capacity.