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z990 - Microarchitectures - IBM
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z990 µarch
General Info
Arch TypeCPU
DesignerIBM
ManufacturerIBM
Introduction2003
Process0.130 µm
Pipeline
TypeSuperscalar, Pipelined
Instructions
ISAz/Architecture
Cache
L1I Cache256 KiB/core
4-way set associative
L1D Cache256 KiB/core
4-way set associative
Succession

z990 was a z/Architecture-based microarchitecture designed by IBM and introduced in 2003 for their z990 processors and 2084-series mainframes. The z990 microarchitecture replaced the z900.

Process Technology[edit]

The z990 microprocessors were manufactured on IBM's 0.13 µm process with copper interconnections. This technology include silicon-on-insulator (SOI) transistors.

Architecture[edit]

Key changes from z900[edit]

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Overview[edit]

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Die[edit]

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codenamez990 +
designerIBM +
first launched2003 +
full page nameibm/microarchitectures/z990 +
instance ofmicroarchitecture +
instruction set architecturez/Architecture +
manufacturerIBM +
microarchitecture typeCPU +
namez990 +
process130 nm (0.13 μm, 1.3e-4 mm) +