ManualUser Guide
Mobile processor comparison

Qualcomm Snapdragon 685 vs Qualcomm Snapdragon 821

Compare available catalogue specifications. The page highlights factual differences without declaring an overall winner.

Swap sides New comparison
Compared fields 42
Different values 38
Quick factual highlights
Qualcomm Snapdragon 685
  • More CPU cores
  • Higher maximum CPU clock
  • Smaller manufacturing process
  • Higher listed GPU clock
Qualcomm Snapdragon 821
  • Higher listed download speed
Side-by-side specifications

Detailed comparison

CPU

SpecificationQualcomm Snapdragon 685Qualcomm Snapdragon 821
Architecture 4x 2.8 GHz - Cortex-A734x 1.9 GHz - Cortex-A53 2x 2.342 GHz - Kryo2x 1.6 GHz - Kryo
CPU cores 8 4
Clock speed 2800 MHz 2342 MHz
Instruction set ARMv8.2-A ARMv8-A
Process technology 6 nanometers 14 nanometers
Transistors Not available 2 billion
TDP Not available 11 W

Cache and memory

SpecificationQualcomm Snapdragon 685Qualcomm Snapdragon 821
L1 cache Not available 64 KB
L2 cache Not available 3 MB
Memory type LPDDR4X LPDDR4
Memory frequency 2133 MHz 1866 MHz
Memory bus 2x 16 Bit 4x 16 Bit
Maximum bandwidth 17 Gbit/s 29.8 Gbit/s
Maximum memory 8 GB 6 GB

Graphics and AI

SpecificationQualcomm Snapdragon 685Qualcomm Snapdragon 821
GPU Adreno 610 Adreno 530
GPU architecture Adreno 600 Adreno 500
GPU clock 1260 MHz 653 MHz
Execution units Not available 2
Shaders 128 256
FLOPS 319.2 Gigaflops 519 Gigaflops
Vulkan 1.1 1.0
OpenCL 2.0 2.0
DirectX 12.1 11.2
Neural processor / NPU Hexagon 686 Hexagon 680

Display and media

SpecificationQualcomm Snapdragon 685Qualcomm Snapdragon 821
Maximum display resolution 2520 x 1080 3840 x 2160
Maximum camera resolution 1x 108MP, 2x 16MP 1x 28MP, 2x 13MP
Video capture 1K at 60FPS 4K at 30FPS
Video playback 1080p at 60FPS 4K at 30FPS
Video codecs - H.264 - H.265 - VP8 - VP9 H.264, H.265, VP8, VP9
Audio codecs - AIFF - CAF - MP3 - MP4 - WAV AIFF, CAF, MP3, MP4, WAV

Connectivity

SpecificationQualcomm Snapdragon 685Qualcomm Snapdragon 821
4G LTE Cat. 13 LTE Cat. 12
5G No No
Download speed Up to 390 Mbps Up to 600 Mbps
Upload speed Up to 150 Mbps Up to 150 Mbps
Wi-Fi 5 5
Bluetooth 5.2 4.1
Navigation GPS, GLONASS, Beidou, Galileo, QZSS, NAVIC GPS, GLONASS, Beidou, Galileo

General

SpecificationQualcomm Snapdragon 685Qualcomm Snapdragon 821
Release March 2023 August 2016
Class Low end Flagship
Model number SM6225-AD MSM8996 Pro
Storage support UFS 2.2 eMMC 5.1, UFS 2.0
Devices in database 9 27
Real devices

Phones using these processors

Examples found in the existing device catalogue.

Qualcomm Snapdragon 685

4G
Oppo Reno12 FS 4G
Oppo

Oppo Reno12 FS 4G

3.0
Smartphone
Display
AMOLED 16.7M colors, 120 Hz, 1080 × 2400 pixe…
RAM
8 GB
Storage
512 GB
Battery
Li-Po 5000 mAh
View details
4G
Oppo Reno12 F 4G
Oppo

Oppo Reno12 F 4G

3.0
Smartphone
Display
AMOLED 16.7M colors, 120 Hz, 1080 × 2400 pixe…
RAM
8 GB
Storage
256 GB, 512 GB
Battery
Li-Po 5000 mAh
View details
Honor Pad X9a WiFi
Honor

Honor Pad X9a WiFi

3.2
Tablet
Display
IPS TFT 1.07G colors, 120 Hz, 1504 × 2508 pix…
RAM
8 GB
Storage
128 GB
Battery
Li-Ion 8300 mAh
View details
4G
Honor Pad X9a
Honor

Honor Pad X9a

3.2
Tablet
Display
IPS TFT 1.07G colors, 120 Hz, 1504 × 2508 pix…
RAM
8 GB
Storage
128 GB
Battery
Li-Ion 8300 mAh
View details
4G
Honor X8c
Honor

Honor X8c

3.2
Smartphone
Display
AMOLED 16.7M colors, 120 Hz, 1080 × 2412 pixe…
RAM
6 GB, 8 GB
Storage
128 GB, 256 GB, 512 GB
Battery
Li-Po 5000 mAh
View details
Honor Pad X9 Pro
Honor

Honor Pad X9 Pro

3.2
Tablet
Display
IPS TFT 1.07G colors, 120 Hz, 1200 × 2000 pix…
RAM
6 GB, 8 GB
Storage
128 GB, 256 GB
Battery
Li-Po 8300 mAh
View details
4G
Honor X7c 4G
Honor

Honor X7c 4G

3.2
Smartphone
Display
IPS TFT 16.7M colors, 120 Hz, 720 × 1610 pixe…
RAM
6 GB, 8 GB
Storage
128 GB, 256 GB
Battery
Li-Po 6000 mAh
View details
Honor Pad X9
Honor

Honor Pad X9

3.2
Tablet
Display
IPS TFT 1.07G colors, 120 Hz, 1200 × 2000 pix…
RAM
4 GB
Storage
128 GB
Battery
Li-Po 7250 mAh
View details

Qualcomm Snapdragon 821

4G
Samsung SM-G9298
Samsung

Samsung SM-G9298

2.9
Display
Super AMOLED 16M colors 1080 × 1920 pixels (4…
RAM
4 GB
Storage
64 GB
Battery
Li-Ion 2300 mAh
View details
PDF manual 4G
Samsung Galaxy Tab S3 LTE
Samsung

Samsung Galaxy Tab S3 LTE

3.5
Tablet
Display
Super AMOLED 2048 × 1536 pixels (9.70 inches)…
RAM
4 GB
Storage
32 GB
Battery
Li-Ion 6000 mAh
View details PDF
PDF manual 4G
LG G Pad 5 10.1 FHD
LG

LG G Pad 5 10.1 FHD

3.9
Tablet
Display
IPS TFT 16M colors 1200 × 1920 pixels (10.10…
RAM
4 GB
Storage
32 GB
Battery
Li-Ion 8200 mAh
View details PDF
4G
LG Q9
LG

LG Q9

5.0
Smartphone
Display
IPS TFT 16M colors 1440 × 3120 pixels (6.10 i…
RAM
4 GB
Storage
32 GB, 64 GB
Battery
Li-Po 3000 mAh
View details
4G
LG G7+ Fit
LG

LG G7+ Fit

3.1
Smartphone
Display
IPS TFT 16M colors 1440 × 3120 pixels (6.10 i…
RAM
4 GB
Storage
64 GB
Battery
Li-Ion 3000 mAh
View details
PDF manual 4G
LG G7 Fit
LG

LG G7 Fit

3.6
Smartphone
Display
IPS TFT 16M colors 1440 × 3120 pixels (6.10 i…
RAM
4 GB
Storage
32 GB, 64 GB
Battery
Li-Po 3000 mAh
View details PDF
PDF manual 4G
LG G6+ Dual SIM
LG

LG G6+ Dual SIM

3.6
Smartphone
Display
IPS TFT 16M colors 1440 × 2880 pixels (5.70 i…
RAM
4 GB
Storage
128 GB
Battery
Li-Ion 3300 mAh
View details PDF
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