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z900 - Microarchitectures - IBM
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z900 µarch
General Info
Arch TypeCPU
DesignerIBM
ManufacturerIBM
IntroductionOctober 3, 2000
Phase-outJune 30, 2006
Process0.180 µm
Core Configs12, 20
Pipeline
TypeScalar, Pipelined
OoOENo
SpeculativeYes
Reg RenamingNo
Stages7
Instructions
ISAz/Architecture
Cache
L1I Cache256 KiB/core
L1D Cache256 KiB/core
L2 Cache8-16 MiB/cluster
Succession

z900 was a z/Architecture-based microarchitecture designed by IBM and introduced in 2000 for their z900 processors and 2064-series mainframes.

Process Technology

The z990 microprocessors were manufactured on IBM's 130 µm process with copper interconnections. This technology include silicon-on-insulator (SOI) transistors.

Architecture

Key changes from z900

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Overview

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Die

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codenamez900 +
core count12 + and 20 +
designerIBM +
first launchedOctober 3, 2000 +
full page nameibm/microarchitectures/z990 +
instance ofmicroarchitecture +
instruction set architecturez/Architecture +
manufacturerIBM +
microarchitecture typeCPU +
namez900 +
phase-outJune 30, 2006 +
pipeline stages7 +
process180 nm (0.18 μm, 1.8e-4 mm) +