Icestorm

E38960

Apple CPU core design CPU microarchitecture

Icestorm is the energy-efficient, low-power CPU core microarchitecture used for the efficiency cores in Apple's M1 system-on-a-chip.

Predicate	Object
instanceOf	Apple CPU core design → CPU microarchitecture →
announcementDate	2020-11 →
architectureFamily	ARM →
belongsToFamily	Apple Silicon core codenames →
coreCountInM1	4 efficiency cores →
coreType	efficiency core →
designer	Apple Inc. →
foundInProductLine	Apple Silicon Mac computers → Apple Silicon Mac mini → Apple Silicon MacBook Air → Apple Silicon MacBook Pro → Apple Silicon iMac → Apple Silicon iPad Air → Apple Silicon iPad Pro →
instructionSetArchitecture	ARMv8-A →
introducedWith	Apple M1 →
marketedAs	efficiency core in Apple Silicon →
optimizationGoal	low leakage power → thermal efficiency →
pairedWith	Firestorm →
powerCharacteristic	energy-efficient → low-power →
processTechnology	5 nm class (TSMC N5) →
roleInSoC	handles background and low-intensity tasks →
successorCoreGeneration	Blizzard →
supports	64-bit ARM instructions → ARMv8 cryptographic extensions → NEON SIMD →
target	high performance per watt →
usedFor	improving battery life in Apple devices →
usedIn	Apple M1 → Apple M1 Max → Apple M1 Pro → Apple M1 Ultra →
vendor	Apple →
wordSize	64-bit →

Subject (surface form when different)	Predicate
Apple M1 →	cpuCoreMicroarchitecture
Apple A14 Bionic →	littleCoreCodename
Firestorm →	pairedWith
Blizzard →	predecessor