Qualcomm Snapdragon 821

Qualcomm Snapdragon 821
Benchmarks & Specs

Last updated:
The Qualcomm Snapdragon 821, manufactured using the 14 nm process, significantly shaped its era. This mobile processor was once a crucial component for many high-end devices of that time. The Kryo architecture of the Qualcomm Snapdragon 821 offered compelling computing power. Especially the integrated Qualcomm Adreno 530 graphics unit was a clear advantage.

It enabled smooth displays in numerous applications and also demanding games. The entire system response benefited significantly from its sophisticated design. With 15 GB/s maximum memory bandwidth, it supported fast data access. For its time, this chip delivered solid and reliable performance. We were able to observe a good balance of efficiency and usable computing power.

The Qualcomm Snapdragon 821 contributed significantly to the positive user experience of those devices. It represented a mature solution for demanding mobile use that met many requirements.
  • Efficient 14 nm Manufacturing
  • Kryo Architecture
  • Integrated Qualcomm Adreno 530 Graphics
  • Balanced performance for high-end devices

Performance Overview
Average performance across multiple benchmarks

Single-core performance
Rank 131 / 176
In segment Smartphone / Tablet
Multi-core performance
Rank 165 / 177
In segment Smartphone / Tablet
Geekbench 6 Single-Core

Geekbench 6 Single-Core
Single-core performance

HiSilicon Kirin 960
8C / 8T · 2.40 GHz
403
Qualcomm Snapdragon 670
8C / 8T · 2.00 GHz
375
Qualcomm Snapdragon 821
4C / 4T · 2.40 GHz
370
Qualcomm Snapdragon 820
4C / 4T · 2.15 GHz
367
Samsung Exynos 9611
8C / 8T · 2.30 GHz
367
Geekbench 6 Multi-Core

Geekbench 6 Multi-Core
Multi-core performance

MediaTek Helio P22
8C / 8T · 2.00 GHz
770
Qualcomm Snapdragon 450
8C / 8T · 1.80 GHz
770
Qualcomm Snapdragon 821
4C / 4T · 2.40 GHz
752
Qualcomm Snapdragon 820
4C / 4T · 2.15 GHz
746
Qualcomm Snapdragon 439
8C / 8T · 1.95 GHz
736
Geekbench 5, 64bit Single-Core

Geekbench 5, 64bit Single-Core
Single-core performance

Qualcomm Snapdragon 820
4C / 4T · 2.15 GHz
344
UNISOC T610
UNISOC T610 101 %
8C / 8T · 1.80 GHz
344
Qualcomm Snapdragon 821
4C / 4T · 2.40 GHz
341
Qualcomm Snapdragon 660 non LTE
8C / 8T · 2.20 GHz
338
Qualcomm Snapdragon 820 Lite
4C / 4T · 1.80 GHz
335
Geekbench 5, 64bit Multi-Core

Geekbench 5, 64bit Multi-Core
Multi-core performance

MediaTek Helio P25
8C / 8T · 2.60 GHz
867
MediaTek MT8169A
6C / 6T · 2.00 GHz
865
Qualcomm Snapdragon 821
4C / 4T · 2.40 GHz
864
MediaTek MT8176
6C / 6T · 2.00 GHz
861
MediaTek Helio P23
8C / 8T · 2.50 GHz
859
iGPU - FP32 Performance (Single-precision GFLOPS)

iGPU - FP32 Performance (Single-precision GFLOPS)

Qualcomm Snapdragon 765
Qualcomm Adreno 620
490
Qualcomm Snapdragon 732G
Qualcomm Adreno 618
486
Qualcomm Snapdragon 821
Qualcomm Adreno 530
476
Qualcomm Snapdragon 820
Qualcomm Adreno 530
476
Qualcomm Snapdragon 730G
Qualcomm Adreno 618
422

More benchmarks

At a glance

PropertyValue
FamilyQualcomm Snapdragon (105)
CPU groupQualcomm Snapdragon 820 (3)
ArchitectureKryo
Technology14 nm
SegmentSmartphone / Tablet
Socket
Generation3
Predecessor
Successor

CPU Cores and Base Frequency

PropertyValue
CPU Cores / Threads4 / 4
Hyperthreading / SMT
Core architecturehybrid (big.LITTLE)
Core Cluster 1: 2x Kryo
2.40 GHz
Core Cluster 2: 2x Kryo
1.60 GHz
L2-Cache
L3-Cache
OverclockingNo

Integrated graphics (iGPU)

PropertyValue
GPU nameQualcomm Adreno 530
GPU frequency0.62 - 0.62 GHz
CUs / Shader / 256
Raytracing
Max. displays0
Max. GPU Memory
Technology14 nm
Release dateQ4/2015

NPU AI performance

PropertyValue
AI hardwareQualcomm AI engine
AI specificationsHexagon 680
NPU + CPU + iGPU

Memory & PCIe

Memory typeMemory bandwidth
LPDDR4-3733
14.9 GB/s
PropertyValue
Max. Memory8 GB
Memory channels2
ECC
PCIe
PCIe Bandwidth

Thermal Management

PropertyValue
TDP
TDP (PL2)
TDP up
TDP down
T. junction max.

Technical details

PropertyValue
Chip designChiplet
AES-NI
Operating systemsAndroid
Instruction setArmv8-A (64 bit)
ISA extensions
Release dateQ3/2016
Release price
DocumentsTechnical data sheet
Qualcomm Snapdragon 821
Qualcomm Snapdragon 821
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