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z14 - Microarchitectures - IBM
| Edit Values | |
| z14 µarch | |
| General Info | |
| Arch Type | CPU |
| Designer | IBM |
| Manufacturer | GlobalFoundries |
| Introduction | July 17, 2017 |
| Process | 14 nm |
| Pipeline | |
| Type | Superscalar, Pipelined |
| Instructions | |
| ISA | z/Architecture |
| Succession | |
z14 was a z/Architecture-based microarchitecture designed by IBM and introduced in 2017 for their z14 processors and mainframes. The z14 microarchitecture replaced the z13.
Process Technology
z14-based microprocessors are manufactured on GlobalFoundries's 14 nm FinFET Silicon-On-Insulator (SOI).
Architecture
Key changes from z13
- 14 nm process (from 22 nm)
- Higher clock frequency (5.2 GHz from 5 GHz)
- Core
- Improved Operand Store Compare (OSC) prediction
- Faster branch wakeup
- Improved instruction delivery
- Cache
- New directory design
- Power efficient
- L1I$ increased to 128 KiB/core (from 96 KiB/core; 33% increase)
- L2D$ increased to 4 MiB/core (from 2 MiB/core; 100% increase)
- L3$ increased to 128 MiB/CP (from 64 MiB/CP; 100% increase)
- New 672 MiB/drawer of shared L4
- New directory design
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Overview
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Facts about "z14 - Microarchitectures - IBM"
| codename | z14 + |
| designer | IBM + |
| first launched | July 17, 2017 + |
| full page name | ibm/microarchitectures/z14 + |
| instance of | microarchitecture + |
| instruction set architecture | z/Architecture + |
| manufacturer | GlobalFoundries + |
| microarchitecture type | CPU + |
| name | z14 + |
| process | 14 nm (0.014 μm, 1.4e-5 mm) + |
