Apple S4 Full Specs

Summary

2 Cores 2 Threads 1.59GHz

TDP 2W

Bandwidth 12.8GB/s LPDDR4

iGPU S4

Peak·FP32·FP16 71.94 GFLOPSFP16

Core Config

2 Cores

2 Threads

Clocks

Base Clock 1.59GHz

Overclocking Locked

Cache

L1i 32KB

L1d 32KB

L2 2MB shared

SLC Cache 1MB

Memory

Type LPDDR4

Max Memory 1GB

ECC No

Channels 1

Bus Width 32-bit

Speed 3200MT/s

Bandwidth 12.8GB/s

Bandwidth Calculator Channels Transfer Rate3200MT/s Calculated Bandwidth 12.8GB/s

Power & Thermals

TDP 2W

iGPU

iGPU S4

Shaders 64

Boost Clock 562MHz

Peak·FP32·FP16 71.94 GFLOPSFP16

NPU

NPU Model H11 Mercury

NPU Cores 2

Performance 1.3 TOPSFP16

Chip

Manufacturer Apple

ISA AArch64

Architecture Apple Silicon 8ARMv8.3-A

Family S Series

Branding

Codename TempestP-Core

Market Segment Smartwatch

Release Date Sep 21, 2018

Fabrication

Foundry TSMC

Fabrication Node N7

Die Size 38mm²

Images

No images available

Used In

Smartwatches Apple Watch Series 4(40mm)Apple Watch Series 4(44mm)Apple Watch Series 4 SS(40mm) Show 1 more

Competitors

AppleS4 vs CPU AppleS8 AppleS4 vs CPU AppleS7 AppleS4 vs CPU AppleS6 Show 12 more