Chapter 1. General description 3
Figure 1-1 shows a Power 770 with the maximum four enclosures, and the front views of a
single-enclosure Power 770 and single-enclosure 780 CEC.
Figure 1-1 Four-enclosure Power 770, and single-enclosure Power 770 and Power 780
1.1.2 IBM Power 780 server
The Power 780 processor card comprises four SCM POWER7+ processors, each designed
with 64-bit architecture. The Power 780 POWER7+ SCM enables either up to four or eight
active processor cores. Each 4-core has 1 MB of L2 cache and 40 MB of L3 cache; each
8-core has 2 MB of L2 cache and 80 MB of L3 cache (256 KB L2 and10 MB L3 per core).
For the Power 780, each POWER7+ SCM processor is available at frequencies of 4.42 GHz
with four cores, or 3.72 GHz with eight cores. The Power 780 server is available starting as
low as four active cores for the 4-core SCM and eight active cores for the 8-core SCM. Built-in
capacity on demand (CoD) functionality allows incremental activation of one core at a time,
up to a maximum of 64 or 128 active cores.
A single Power 780 CEC enclosure is equipped with 16 DIMM slots running at 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 increase enables operating at a higher data
rate for large memory configurations.
The Power 780 has two 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 780 supports AMM for the hypervisor. It is a standard no-additional-charge
feature. AMM guards against system-wide outages as a result of any uncorrectable error
associated with firmware. You have the option to enable, disable, or re-enable this feature
depending on your needs. Also available as an option is Active Memory Expansion, which
enhances memory capacity.
Power 770 with 4 enclosures
Power 780 single enclosure
Power 770 single enclosure
TurboCore mode: TurboCore mode is no longer supported on the 780 processor card.
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