S3
S4
Apple S3 vs Apple S4 Full Specs
2 Cores 2 Threads 780MHz | 2 Cores 2 Threads 1.59GHz |
TDP 2W | TDP 2W |
Bandwidth 12.8GB/s LPDDR4 | Bandwidth 12.8GB/s LPDDR4 |
iGPU | iGPU |
·· 57.6 GFLOPSFP16 | ·· 71.94 GFLOPSFP16 |
S312.8GB/s
S412.8GB/s2 Cores | 2 Cores |
2 Threads | 2 Threads |
Base Clock 780MHz | Base Clock 1.59GHz |
Overclocking Locked | Overclocking Locked |
L1i 32KB | L1i 32KB |
L1d 32KB | L1d 32KB |
L2 512KB | L2 2MB shared |
SLC Cache - | SLC Cache 1MB |
Type LPDDR4 | Type LPDDR4 |
Max Memory 768MB | Max Memory 1GB |
ECC No | ECC No |
Channels 1 | Channels 1 |
Bus Width 32-bit | Bus Width 32-bit |
Speed 3200MT/s | Speed 3200MT/s |
Bandwidth 12.8GB/s | Bandwidth 12.8GB/s |
Bandwidth Calculator Channels Transfer Rate ·· | Bandwidth Calculator Channels Transfer Rate ·· |
TDP 2W | TDP 2W |
iGPU | iGPU |
Shaders 32 | Shaders 64 |
Boost Clock 450MHz | Boost Clock 562MHz |
·· 57.6 GFLOPSFP16 | ·· 71.94 GFLOPSFP16 |
NPU Model - | NPU Model H11 Mercury |
NPU Cores - | NPU Cores 2 |
Performance - | Performance 1.3 TOPSFP16 |
Modem Model X7 | Modem Model - |
Peak Down Up to 300Mbps | Peak Down - |
Peak Up Up to 50Mbps | Peak Up - |
Manufacturer | Manufacturer |
ISA AArch32 | ISA AArch64 |
Architecture | Architecture Apple Silicon 8ARMv8.3-A |
Family | Family |
Branding  | Branding  |
Codename Cortex-A7P-Core | Codename TempestP-Core |
Market Segment Smartwatch | Market Segment Smartwatch |
Release Date Sep 22, 2017 | Release Date Sep 21, 2018 |
Part Number APL S3 | Part Number APL S4 |
Foundry Samsung | Foundry TSMC |
Fabrication Node 28nm | Fabrication Node N7 |
Die Size 34mm² | Die Size 38mm² |
Transistor Count 338M | Transistor Count - |
Transistor Density 10 MTr/mm² | Transistor Density - |