Qualcomm Snapdragon 660 vs Qualcomm QCM6490

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CPU comparison with benchmarks


Qualcomm Snapdragon 660 CPU1 vs CPU2 Qualcomm QCM6490
Qualcomm Snapdragon 660 Qualcomm QCM6490

CPU comparison

Qualcomm Snapdragon 660 or Qualcomm QCM6490 - 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 660 has 8 cores with 8 threads and clocks with a maximum frequency of 2.20 GHz. Up to 8 GB of memory is supported in 2 memory channels. The Qualcomm Snapdragon 660 was released in Q2/2017.

The Qualcomm QCM6490 has 8 cores with 8 threads and clocks with a maximum frequency of 2.71 GHz. The CPU supports up to GB of memory in 2 memory channels. The Qualcomm QCM6490 was released in Q4/2021.
Qualcomm Snapdragon (103) Family Qualcomm Snapdragon (103)
Qualcomm Snapdragon 660 (2) CPU group Qualcomm QCM6490 (1)
5 Generation 9
Kryo 260 Architecture Kryo 670
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Qualcomm Snapdragon 660 has 8 CPU cores and can calculate 8 threads in parallel. The clock frequency of the Qualcomm Snapdragon 660 is 2.20 GHz while the Qualcomm QCM6490 has 8 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the Qualcomm QCM6490 is at 2.71 GHz.

Qualcomm Snapdragon 660 Characteristic Qualcomm QCM6490
8 Cores 8
8 Threads 8
hybrid (big.LITTLE) Core architecture hybrid (Prime / big.LITTLE)
No Hyperthreading No
No Overclocking ? No
2.20 GHz
4x Kryo 260 Gold
A-Core 2.71 GHz
1x Cortex-A78
1.84 GHz
4x Kryo 260 Silver
B-Core 2.40 GHz
3x Cortex-A78

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Qualcomm Snapdragon 660 Characteristic Qualcomm QCM6490
Qualcomm AI engine AI hardware Qualcomm AI engine
Hexagon 680 AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The Qualcomm Snapdragon 660 or Qualcomm QCM6490 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Qualcomm Adreno 512 GPU Qualcomm Adreno 643L
0.60 GHz GPU frequency 0.81 GHz
0.60 GHz GPU (Turbo) 0.81 GHz
5 GPU Generation --
14 nm Technology 6 nm
0 Max. displays 1
-- Compute units --
128 Shader 768
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
11 DirectX Version 12.0

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 512 GPU Qualcomm Adreno 643L
Decode Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode Codec h264 Decode / Encode
Decode Codec VP9 Decode / Encode
Decode Codec VP8 Decode / Encode
No Codec AV1 No
No Codec AVC Decode
Decode Codec VC-1 Decode
Decode Codec JPEG Decode / Encode

Memory & PCIe

The Qualcomm Snapdragon 660 can use up to 8 GB of memory in 2 memory channels. The maximum memory bandwidth is 14.9 GB/s. The Qualcomm QCM6490 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 44.0 GB/s.

Qualcomm Snapdragon 660 Characteristic Qualcomm QCM6490
LPDDR4-3733 Memory LPDDR5-6400, LPDDR4X-4266
8 GB Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
14.9 GB/s Max. Bandwidth 44.0 GB/s
No ECC No
-- L2 Cache --
-- L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the Qualcomm Snapdragon 660 is --, while the Qualcomm QCM6490 has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Qualcomm Snapdragon 660 Characteristic Qualcomm QCM6490
-- TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Qualcomm Snapdragon 660 is manufactured in 14 nm and has 0.00 MB cache. The Qualcomm QCM6490 is manufactured in 6 nm and has a 0.00 MB cache.

Qualcomm Snapdragon 660 Characteristic Qualcomm QCM6490
14 nm Technology 6 nm
Chiplet Chip design Chiplet
Armv8-A (64 bit) Instruction set (ISA) Armv8-A (64 bit)
-- ISA extensions --
-- Socket --
None Virtualization None
No AES-NI No
Android Operating systems Android
Q2/2017 Release date Q4/2021
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Qualcomm Snapdragon 660 to help other visitors make their purchasing decisions. The average rating is 3.8 stars (4 ratings). Rate now:
Here you can rate the Qualcomm QCM6490 to help other visitors make their purchasing decisions. The average rating is 1.0 stars (1 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Qualcomm Snapdragon 660 (35%)
Qualcomm QCM6490 (100%)
⌀ Multi core performance in 2 CPU benchmarks
Qualcomm Snapdragon 660 (49%)
Qualcomm QCM6490 (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 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
330 (38%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
869 (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 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
1356 (50%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
2705 (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 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
350 (32%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
1097 (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 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
1288 (47%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
2745 (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 660 Qualcomm Snapdragon 660
Qualcomm Adreno 512 @ 0.60 GHz
154 (12%)
Qualcomm QCM6490 Qualcomm QCM6490
Qualcomm Adreno 643L @ 0.81 GHz
1247 (100%)

AnTuTu 10 Benchmark

The AnTuTu 10 benchmark is one of the best-known benchmarks for mobile processors, which is now available in version 10. There is a version for Android-based smartphones and tablets, as well as a version for Apple mobile devices, i.e. iPhones and iPads.

The Antutu 10 benchmark has 3 phases. In the first phase, the device's RAM is tested, in phase 2 the graphics are tested and in the final phase the entire device is pushed to its performance limits by rendering 3D graphics.

Antutu 10 is therefore ideal for comparing the performance of different devices.
Qualcomm Snapdragon 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
0 (0%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
673946 (100%)

AnTuTu 8 Benchmark

The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.

In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
Qualcomm Snapdragon 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
158369 (100%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
0 (0%)

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 660 Qualcomm Snapdragon 660
8C 8T @ 2.20 GHz
2344 (100%)
Qualcomm QCM6490 Qualcomm QCM6490
8C 8T @ 2.71 GHz
0 (0%)

Devices using this processor

Qualcomm Snapdragon 660 Qualcomm QCM6490
Unknown Fairphone 5

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