Qualcomm Snapdragon 821 VS Qualcomm Snapdragon 820

Comparing Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 820

Comparison of video cards Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 820 in benchmarks and specifications.

Differences Specifications Benchmarks

Differences

Top features of Qualcomm Snapdragon 821

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Top features of Qualcomm Snapdragon 820

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Specifications

Complete list of technical specifications

Qualcomm Snapdragon 821 Qualcomm Snapdragon 820

CPU generation and family

Let's find out which one of Qualcomm Snapdragon 821 and Qualcomm Snapdragon 820 is of a more recent generation, and what segment it belongs to.

Specification	Value
Name	Qualcomm Snapdragon 821 Qualcomm Snapdragon 820
Family	Qualcomm Snapdragon Qualcomm Snapdragon
CPU group	Qualcomm Snapdragon 820 Qualcomm Snapdragon 820
Segment	Mobile Mobile
Generation	3 3

CPU Cores and Base Frequency

In this block we are going to compare Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 820 by main technical specifications: number of cores and threads, base and maximum frequencies, process technology and cache size. The higher these specifications are, the more powerful your CPU will be.

Specification	Value
CPU Cores / Threads	4 / 4 4 / 4
Core architecture	hybrid (big.LITTLE) hybrid (big.LITTLE)
A-Core	2x Kryo 2x Kryo
B-Core	2x Kryo 2x Kryo
Hyperthreading / SMT	No No
Overclocking	No No
A-Core Frequency	2.40 GHz 2.15 GHz
B-Core Frequency	1.60 GHz 1.60 GHz

Internal Graphics

Common specifications for integrated graphics cards in Qualcomm Snapdragon 821 and Qualcomm Snapdragon 820 along with supported interfaces and connection options. This block has no effect on the final efficiency of the CPU.

Specification	Value
GPU name	Qualcomm Adreno 530 Qualcomm Adreno 530
GPU frequency	0.62 GHz 0.62 GHz
GPU (Turbo)	0.62 GHz 0.62 GHz
Shader	256 256
Generation	5 5
Direct X	11,1 11,1
Technology	14 nm 14 nm
Release date	Q4/2015 Q4/2015

Hardware codec support

Let's compare the support of video codecs between Qualcomm Snapdragon 821 and Qualcomm Snapdragon 820. Hardware support of video decoding by embedded graphics cards directly affects the speed and quality of rendering videos.

Specification	Value
h265 / HEVC (8 bit)	Decode Decode
h265 / HEVC (10 bit)	No No
h264	Decode Decode
VP8	Decode Decode
VP9	Decode Decode
AV1	No No
AVC	No No
VC-1	Decode Decode
JPEG	Decode Decode

Memory & PCIe

To choose the best model between Qualcomm Snapdragon 821 and Qualcomm Snapdragon 820 you need to pay special attention to memory type, clock frequency, multi-channel features, and PCIe version. The higher these numbers are, the better your CPU will be. Keep in mind that the maximum memory and frequency may also depend on the model of the motherboard.

Specification	Value
Memory type	LPDDR4-1866 LPDDR4-1866
Memory channels	4 (Quad Channel) 4 (Quad Channel)
ECC	No No
AES-NI	No No

Thermal Management

Let's find out what TDP value would be better for Qualcomm Snapdragon 821 or Qualcomm Snapdragon 820? The Thermal Design Power (TDP) indicates the maximum amount of heat that should be dissipated by the chip cooling system. However, the value of TDP gives only a rough indication of the real power consumption of the CPU.

Specification	Value

Technical details

Here you can find a comparison of 2nd and 3rd level cache sizes for Qualcomm Snapdragon 821 and Qualcomm Snapdragon 820 CPUs along with a list of ISA extensions.

Specification	Value
Technology	14 nm 14 nm
Chip design	Chiplet Chiplet
Socket	N/A N/A
Architecture	Kryo Kryo
Operating systems	Android Android
Virtualization	None None
Instruction set (ISA)	ARMv8-A64 (64 bit) ARMv8-A64 (64 bit)
Release date	Q3/2016 Q4/2015
Part Number	MSM8996 Pro-AB MSM8996