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{{ibm title|z990|arch}}
+
{{ibm title|z900|arch}}
 
{{microarchitecture
 
{{microarchitecture
 
|atype=CPU
 
|atype=CPU
|name=z990
+
|name=z900
 
|designer=IBM
 
|designer=IBM
 
|manufacturer=IBM
 
|manufacturer=IBM
|introduction=2003
+
|introduction=October 3, 2000
|process=0.130 µm
+
|phase-out=June 30, 2006
|type=Superscalar
+
|process=0.180 µm
 +
|cores=12
 +
|cores 2=20
 +
|type=Scalar
 
|type 2=Pipelined
 
|type 2=Pipelined
 +
|oooe=No
 +
|speculative=Yes
 +
|renaming=No
 +
|stages=7
 
|isa=z/Architecture
 
|isa=z/Architecture
 
|l1i=256 KiB
 
|l1i=256 KiB
 
|l1i per=core
 
|l1i per=core
|l1i desc=4-way set associative
 
 
|l1d=256 KiB
 
|l1d=256 KiB
 
|l1d per=core
 
|l1d per=core
|l1d desc=4-way set associative
+
|l2=8-16 MiB
 +
|l2 per=cluster
 
|predecessor=z900
 
|predecessor=z900
 
|predecessor link=ibm/microarchitectures/z900
 
|predecessor link=ibm/microarchitectures/z900
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|successor link=ibm/microarchitectures/z9
 
|successor link=ibm/microarchitectures/z9
 
}}
 
}}
'''z990''' was a [[z/Architecture]]-based microarchitecture designed by [[IBM]] and introduced in 2003 for their {{ibm|z990}} processors and 2084-series mainframes. The z990 microarchitecture replaced the {{\\|z900}}.
+
'''z900''' was a [[z/Architecture]]-based microarchitecture designed by [[IBM]] and introduced in 2000 for their {{ibm|z900}} processors and 2064-series mainframes.
  
 
==Process Technology==
 
==Process Technology==
The z990 microprocessors were manufactured on [[IBM]]'s [[0.13 µm process]] with copper interconnections. This technology include [[silicon-on-insulator]] (SOI) transistors.
+
The z990 microprocessors were manufactured on [[IBM]]'s [[130 µm process]] with copper interconnections. This technology include [[silicon-on-insulator]] (SOI) transistors.
  
 
== Architecture ==
 
== Architecture ==

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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) +