Qualcomm Snapdragon 855 vs Qualcomm Snapdragon 821

VS

Qualcomm Snapdragon 855 Qualcomm Snapdragon 821

We compared two versions of phone SoCs: 8 cores 2840MHz Qualcomm Snapdragon 855 vs. 4 cores 2342MHz Qualcomm Snapdragon 821 . You will find out which processor performs better in benchmark tests, key specifications, power consumption, and more.

Main Differences

Qualcomm Snapdragon 855 Advantages

Better graphics card performance FLOPS (0.8985 TFLOPS vs 0.3343 TFLOPS )

Larger memory bandwidth (34.13GB/s vs 29.8GB/s)

Higher Frequency (2840MHz vs 2342MHz)

More modern manufacturing process (7nm vs 14nm)

Lower TDP (6W vs 11W)

Released 2 years and 4 months late

Score

Benchmark

AnTuTu 10

Qualcomm Snapdragon 855 +154%

592031

Qualcomm Snapdragon 821

233076

Geekbench 6 Single Core

Qualcomm Snapdragon 855 +140%

939

Qualcomm Snapdragon 821

391

Geekbench 6 Multi Core

Qualcomm Snapdragon 855 +258%

2855

Qualcomm Snapdragon 821

797

FP32 (float)

Qualcomm Snapdragon 855 +168%

898

Qualcomm Snapdragon 821

334

Qualcomm Snapdragon 855

VS

Qualcomm Snapdragon 821

CPU

1x 2.84 GHz – Cortex-A76 (Kryo 485 Gold)
3x 2.42 GHz – Cortex-A76 (Kryo 485 Gold)
4x 1.8 GHz – Cortex-A55 (Kryo 485 Silver)

Architecture

2x 2.342 GHz – Kryo
2x 1.6 GHz – Kryo

2840 MHz

Frequency

2342 MHz

8

Cores

4

1 MB

L2 cache

1 MB

0

L3 cache

-

7 nm

Process

14 nm

6.7

Transistor count

2

6 W

TDP

11 W

TSMC

Manufacturing

Samsung

Graphics

Adreno 640

GPU name

Adreno 530

585 MHz

GPU frequency

653 MHz

2

Execution units

1

384

Shading units

256

16

Max size

8

0.8985 TFLOPS

FLOPS

0.3343 TFLOPS

1.1

Vulkan version

1.0

2.0

OpenCL version

2.0

12.1

DirectX version

11

Memory

LPDDR4X

Memory type

LPDDR4

2133 MHz

Memory frequency

1866 MHz

4x 16 Bit

Bus

4x 16 Bit

34.13 Gbit/s

Max bandwidth

29.8 Gbit/s

AI

Hexagon 690

NPU

Hexagon 680

Multimedia (ISP)

Hexagon 690

Neural processor (NPU)

Hexagon 680

UFS 3.0

Storage type

eMMC 5.1, UFS 2.0

3840 x 2160

Max display resolution

3840 x 2160

1x 192MP, 2x 22MP

Max camera resolution

1x 28MP, 2x 13MP

4K at 120FPS

Video capture

4K at 30FPS

8K at 30FPS, 4K at 120FPS

Video playback

4K at 30FPS

H.264, H.265, VP8, VP9

Video codecs

H.264, H.265, VP8, VP9

AAC, AIFF, CAF, MP3, MP4, WAV

Audio codecs

AIFF, CAF, MP3, MP4, WAV

X24 LTE, X50 5G

Modem

X12

Connectivity

LTE Cat. 20

4G support

LTE Cat. 12

Yes

5G support

No

Up to 5000 Mbps

Download speed

Up to 600 Mbps

Up to 1240 Mbps

Upload speed

Up to 150 Mbps

6

Wi-Fi

5

5.0

Bluetooth

4.1

GPS, GLONASS, Beidou, Galileo, QZSS, SBAS

Navigation

GPS, GLONASS, Beidou, Galileo

Info

Dec 2018

Announced

Aug 2016

Flagship

Class

Flagship

SM8150

Model number

MSM8996 Pro-AC

Qualcomm Snapdragon 855

Official page

Qualcomm Snapdragon 821

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