Apple A4 (iPad) vs Apple A19 Pro Full Specs
1 Cores 1 Threads 1GHz | 6 Cores(2P+4E) 6 Threads(2P+4E) 4.26GHz |
TDP 5W | TDP 5W |
Bandwidth 3.2GB/s LPDDR | Bandwidth 76.8GB/s LPDDR5X |
iGPU | iGPU |
·· 2.13 GFLOPSFP32 | ·· 4.98 TFLOPSFP16 |
A4 (iPad)-
A19 Pro3,8951 Cores 1P - | 6 Cores 2P 4E |
1 Threads 1P - | 6 Threads 2P 4E |
Base Clock 1GHz | Base Clock 4.26GHz |
Overclocking Locked | Overclocking Locked |
L1i 32KB P - | L1i 192KB P 128KB E |
L1d 32KB P - | L1d 128KB P 64KB E |
L2 512KB P - - | L2 16MB P shared 6MB E shared |
SLC Cache - | SLC Cache 32MB |
Type LPDDR | Type LPDDR5X |
Max Memory 512MB | Max Memory 12GB |
ECC No | ECC No |
Channels 2 | Channels 1 |
Bus Width 64-bit | Bus Width 64-bit |
Speed 400MT/s | Speed 9600MT/s |
Bandwidth 3.2GB/s | Bandwidth 76.8GB/s |
Bandwidth Calculator Channels Transfer Rate Calculated Bandwidth 3.2GB/s | Bandwidth Calculator Channels Transfer Rate Calculated Bandwidth 76.8GB/s |
TDP 5W | TDP 5W |
Peak Power - | Peak Power 12W |
- | PCIe PCIe 4.0 x59.8GB/sBandwidth |
iGPU | iGPU |
Shaders 4 | Shaders 768 |
Boost Clock 266MHz | Boost Clock 1.62GHz |
·· 2.13 GFLOPSFP32 | ·· 4.98 TFLOPSFP16 |
NPU Model - | NPU Model H18 Apollo |
NPU Cores - | NPU Cores 16 |
NPU Clock - | NPU Clock 2.17GHz |
Performance - | Performance 35 TOPSINT8 |
Manufacturer | Manufacturer |
ISA AArch32 | ISA AArch64 |
Architecture | Architecture Apple Silicon 15ARMv9.2-A |
Family | Family |
Branding  | Branding  |
Codename A4 - Cortex-A8P-Core - | Codename Thera A19 ProVariant AS15PP-Core AS15EE-Core |
Market Segment Tablet | Market Segment Smartphone |
Release Date Apr 3, 2010 | Release Date Sep 9, 2025 |
Foundry Samsung | Foundry TSMC |
Fabrication Node 45nm | Fabrication Node N3P |
Die Size 53mm² | Die Size 99mm² |
Transistor Count - | Transistor Count 17 Billion |
Transistor Density - | Transistor Density 172 MTr/mm² |
No images available
No images available
Smartphones - | Smartphones |
Tablets | Tablets - |