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z15 µarch
General Info
Arch Type	CPU
Designer	IBM
Manufacturer	GlobalFoundries
Introduction	September 12, 2019
Process	14 nm
Core Configs	12
Pipeline
Type	Superscalar, Pipelined
OoOE	Yes
Speculative	Yes
Reg Renaming	Yes
Instructions
ISA	z/Architecture
Cache
L1I Cache	128 KiB
L1D Cache	128 KiB
Succession
z14

z15 is the successor to the z14, a 14 nm z/Architecture mainframe microarchitecture designed by IBM and introduced in 2019.

Process Technology

IBM fabricates its z15 microprocessors and system controllers on GlobalFoundries's 14 nm (14HP) FinFET Silicon-On-Insulator (SOI) process featuring highly-dense deep trench structures used for high-density eDRAM.

Release Dates

The z15 was launched by IBM on September 12, 2019. General availability of the z15 mainframe started September 23.