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z990 - Microarchitectures - IBM
| Edit Values | |
| z900 µarch | |
| General Info | |
| Arch Type | CPU |
| Designer | IBM |
| Manufacturer | IBM |
| Introduction | October 3, 2000 |
| Phase-out | June 30, 2006 |
| Process | 0.180 µm |
| Core Configs | 12, 20 |
| Pipeline | |
| Type | Scalar, Pipelined |
| OoOE | No |
| Speculative | Yes |
| Reg Renaming | No |
| Stages | 7 |
| Instructions | |
| ISA | z/Architecture |
| Cache | |
| L1I Cache | 256 KiB/core |
| L1D Cache | 256 KiB/core |
| L2 Cache | 8-16 MiB/cluster |
| Succession | |
z990 was a z/Architecture-based microarchitecture designed by IBM and introduced in 2006 for their z990 processors and 2084-series mainframes. The z990 microarchitecture replaced the z900.
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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Facts about "z990 - Microarchitectures - IBM"
| codename | z900 + |
| core count | 12 + and 20 + |
| designer | IBM + |
| first launched | October 3, 2000 + |
| full page name | ibm/microarchitectures/z990 + |
| instance of | microarchitecture + |
| instruction set architecture | z/Architecture + |
| manufacturer | IBM + |
| microarchitecture type | CPU + |
| name | z900 + |
| phase-out | June 30, 2006 + |
| pipeline stages | 7 + |
| process | 180 nm (0.18 μm, 1.8e-4 mm) + |