IBM IntelliStation POWER 285, Технический обзор и введение

Страница: 20 / 66

10
IBM IntelliStation POWER 285 Technical Overview and Introduction
2.1 The processor
The IBM processor capitalizes all the enhancements brought by the POWER5™
processor. For a detailed description of the POWER5 processor, refer to IBM IntelliStation
POWER 285 Technical Overview and Introduction, REDP-4078. Figure 2-2 shows a
high-level view of the processor.
Figure 2-2 processor
The CMOS10S technology in the processor uses a 90 nm fabrication process,
which enables:
򐂰
Performance gains through faster clock rates
򐂰
Processor size reduction (243 mm compared with 389 mm)
The processor is 37% smaller than the POWER5 processor. It consumes less
power and requires less sophisticated cooling. Thus, you can use the processor
in servers where previously you could only use low frequency processors because of cooling
restrictions.
The design provides the following additional enhancements:
򐂰 New page sizes added in ERAT and TLB
Two new pages sizes (64 KB and 16 GB) were recently added in PowerPC® architecture.
򐂰 A new segment size available in SLB
One new 1 TB segment size was recently added in PowerPC architecture.
Core
2.1 GHz
Core
2.1 GHz
Core
2.1 GHz
Core
2.1 GHz
1.9 MB L2
L3
Intf
Mem
Cntrl
GX+
Intf
SMP
Fabric
Bus
L3
Bus
Mem
Bus
GX+
Bus
Vertical
Fabric
Bus
POWER 5+ Processor
Enhanced Distributed Switch
(Fabric Bus Controller)