Qualcomm Adreno 840 vs Qualcomm Adreno 420 Full Specs
1,536 Shaders 1.2GHz | 128 Shaders 600MHz |
Shared Memory84.8GB/sLPDDR5X | Shared Memory25.6GB/sLPDDR3 |
·· 3.69 TFLOPS | ·· 153.6 GFLOPS |
Form Factor iGPU | Form Factor iGPU |
TDP 5W | TDP 5W |
Clock Speed ·· | Clock Speed ··· |
Peak OPS 7.37 TFLOPSFP16 | Peak OPS 307.2 GFLOPSFP16 |
BF16 7.37 TFLOPS | - |
FP32 3.69 TFLOPS | FP32 153.6 GFLOPS |
FP64 921.6 GFLOPS | FP64 38.4 GFLOPS |
Pixel Rate 57.6 GPixel/s | Pixel Rate 4.8 GPixel/s |
Texture Rate 115.2 GTexel/s | Texture Rate 4.8 GTexel/s |
Shaders 1,536 Shaders | Shaders 128 Shaders |
TMUs 96 TMUs | TMUs 8 TMUs |
ROPs 48 ROPs | ROPs 8 ROPs |
EUs 12 EUs | Units - |
Base Clock - | Base Clock 500MHz |
Boost Clock 1.2GHz | Boost Clock 600MHz |
L2 Cache 1MB shared | L2 Cache 1.5MB shared |
L3 Cache 18MB shared | L3 Cache - |
Shared MemoryLPDDR5X | Shared MemoryLPDDR3 |
Memory Bus 64-bit | Memory Bus 128-bit |
Memory Speed 10.6GT/s | Memory Speed 1.6GT/s |
Memory Bandwidth 84.8GB/s | Memory Bandwidth 25.6GB/s |
ECC No | ECC No |
TDP 5W | TDP 5W |
Multi-Monitor 1 | Multi-Monitor 1 |
Encoder Model Hexagon | Encoder Model QDSP6 |
Decoder Model Hexagon AV1 | Decoder Model QDSP6 |
Form Factor iGPU | Form Factor iGPU |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding ![]() | Branding ![]() |
Market Segment Smartphone | Market Segment Smartphone |
Release Date Sep 24, 2025 | Release Date Nov 1, 2013 |
Foundry TSMC | Foundry TSMC |
Fabrication Node N3E | Fabrication Node 28nm HPM |
Die Size 126mm² | Die Size - |
No images available
No images available
CPUs | CPUs |

