Qualcomm Snapdragon 821 vs Intel Core i3-2105

Last updated:

CPU comparison with benchmarks


Qualcomm Snapdragon 821 CPU1 vs CPU2 Intel Core i3-2105
Qualcomm Snapdragon 821 Intel Core i3-2105

CPU comparison

Qualcomm Snapdragon 821 or Intel Core i3-2105 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Qualcomm Snapdragon 821 has 4 cores with 4 threads and clocks with a maximum frequency of 2.40 GHz. Up to 8 GB of memory is supported in 2 memory channels. The Qualcomm Snapdragon 821 was released in Q3/2016.

The Intel Core i3-2105 has 2 cores with 4 threads and clocks with a maximum frequency of 3.10 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The Intel Core i3-2105 was released in Q2/2011.
Qualcomm Snapdragon (102) Family Intel Core i3 (205)
Qualcomm Snapdragon 820 (3) CPU group Intel Core i 2000 (28)
3 Generation 2
Kryo Architecture Sandy Bridge S
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Qualcomm Snapdragon 821 is a 4 core processor with a clock frequency of 2.40 GHz. The Intel Core i3-2105 has 2 CPU cores with a clock frequency of 3.10 GHz.

Qualcomm Snapdragon 821 Characteristic Intel Core i3-2105
4 Cores 2
4 Threads 4
hybrid (big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
2.40 GHz
2x Kryo
A-Core 3.10 GHz
1.60 GHz
2x Kryo
B-Core --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Qualcomm Snapdragon 821 Characteristic Intel Core i3-2105
Qualcomm AI engine AI hardware --
Hexagon 680 AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

Qualcomm Adreno 530 GPU Intel HD Graphics 3000
0.62 GHz GPU frequency 0.85 GHz
0.62 GHz GPU (Turbo) 1.10 GHz
5 GPU Generation 6
14 nm Technology 32 nm
0 Max. displays 2
-- Compute units 12
256 Shader 96
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
11,1 DirectX Version 10.1

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Qualcomm Adreno 530 GPU Intel HD Graphics 3000
Decode Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode Codec h264 Decode / Encode
Decode Codec VP9 No
Decode Codec VP8 No
No Codec AV1 No
No Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode Codec JPEG No

Memory & PCIe

The Qualcomm Snapdragon 821 supports a maximum of 8 GB of memory in 2 memory channels. The Intel Core i3-2105 can connect up to 32 GB of memory in 2 memory channels.

Qualcomm Snapdragon 821 Characteristic Intel Core i3-2105
LPDDR4-3733 Memory DDR3-1333
8 GB Max. Memory 32 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
14.9 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
-- L2 Cache --
-- L3 Cache 3.00 MB
-- PCIe version 2.0
-- PCIe lanes 16
-- PCIe Bandwidth 8.0 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Qualcomm Snapdragon 821 has a TDP of --, that of the Intel Core i3-2105 is 65 W.

Qualcomm Snapdragon 821 Characteristic Intel Core i3-2105
-- TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Qualcomm Snapdragon 821 has a 0.00 MB cache, while the Intel Core i3-2105 cache has a total of 3.00 MB.

Qualcomm Snapdragon 821 Characteristic Intel Core i3-2105
14 nm Technology 32 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4.1, SSE4.2, AVX
-- Socket LGA 1155
None Virtualization VT-x, VT-x EPT
No AES-NI Yes
Android Operating systems Windows 10, Linux
Q3/2016 Release date Q2/2011
-- Release price 134 $
show more data show more data


Rate these processors

Here you can rate the Qualcomm Snapdragon 821 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the Intel Core i3-2105 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 821 (66%)
Intel Core i3-2105 (100%)
⌀ Multi core performance in 3 CPU benchmarks
Qualcomm Snapdragon 821 (74%)
Intel Core i3-2105 (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
341 (59%)
Intel Core i3-2105 Intel Core i3-2105
2C 4T @ 3.10 GHz
575 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
864 (68%)
Intel Core i3-2105 Intel Core i3-2105
2C 4T @ 3.10 GHz
1280 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
370 (72%)
Intel Core i3-2105 Intel Core i3-2105
2C 4T @ 3.10 GHz
515 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
752 (69%)
Intel Core i3-2105 Intel Core i3-2105
2C 4T @ 3.10 GHz
1093 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
Qualcomm Adreno 530 @ 0.62 GHz
476 (100%)
Intel Core i3-2105 Intel Core i3-2105
Intel HD Graphics 3000 @ 1.10 GHz
211 (44%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Qualcomm Snapdragon 821 Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz
1594 (85%)
Intel Core i3-2105 Intel Core i3-2105
2C 4T @ 3.10 GHz
1883 (100%)

Devices using this processor

Qualcomm Snapdragon 821 Intel Core i3-2105
Unknown Unknown

Popular comparisons containing this CPUs

1. Qualcomm Snapdragon 821Qualcomm Snapdragon 888 Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 888
2. Qualcomm Snapdragon 821Qualcomm Snapdragon 720G Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 720G
3. Qualcomm Snapdragon 821Qualcomm Snapdragon 695 5G Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 695 5G
4. Qualcomm Snapdragon 870Qualcomm Snapdragon 821 Qualcomm Snapdragon 870 vs Qualcomm Snapdragon 821
5. Qualcomm Snapdragon 821Qualcomm Snapdragon 820 Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 820
6. Qualcomm Snapdragon 821Qualcomm Snapdragon 810 Qualcomm Snapdragon 821 vs Qualcomm Snapdragon 810
7. Qualcomm Snapdragon 780GQualcomm Snapdragon 821 Qualcomm Snapdragon 780G vs Qualcomm Snapdragon 821
8. Qualcomm Snapdragon 750GQualcomm Snapdragon 821 Qualcomm Snapdragon 750G vs Qualcomm Snapdragon 821
9. Qualcomm Snapdragon 855Qualcomm Snapdragon 821 Qualcomm Snapdragon 855 vs Qualcomm Snapdragon 821
10. Qualcomm Snapdragon 845Qualcomm Snapdragon 821 Qualcomm Snapdragon 845 vs Qualcomm Snapdragon 821


back to index