Google Pixel 3a with Snapdragon 670 Compared to Exynos 7884, Snapdragon 835 – Best Mid-Range Phone EVER?

May 13, 2019
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Google's recent Pixel 3a launch has breathed fresh air into the debate for mid-range smartphones. The smartphones feature a 10nm Snapdragon 670 processor with a $399 price tag and an operating system tailored to the gadgets' hardware.

The carrier-dominated American market has left fantastic smartphones from Samsung out of the market. Therefore, if Google's careful with its build quality, the Pixel 3a smartphone lineup might prove very fruitful for a company dependent on advertising revenue for its dividends.

Related OnePlus 7 Pro & Pixel 3a Help Both Companies Register up to a 152% Growth in U.S., Says Counterpoint Research

To make things easier for those of you who want to purchase a Pixel 3a for themselves, or are curious about the mid-tier smartphones available today, we're taking a brief look at some of the competing gadgets for comparison sake.

The Pixel 3a is powered by Qualcomm's Snapdragon 670. This is a processor that reflects the San Diego chip giant's new design strategy of using two cores for heavy workloads while distributing low workloads on more cores.

Snapdragon 670

Qualcomm increased out of order execution and decreased prefetch time on the Snapdragon - with the latter blending in nicely with a new generation of system level cache. These design parameters are tuned in line with the need of today's smartphones to combine resources for the execution of data from different sources. ISPs, in particular, are playing an important role in SoC design.

Therefore, we've taken a look at some processors you're bound to find in devices in a similar price bracket to the Pixel 3a and Pixel 3 XL. The comparison is broken down into the three key metrics of an SoC's performance; CPU, GPU and RAM. Additionally, we've also taken a look at some benchmarks. Take a look below for more details.

Related Pixel 3a Sales Helped Google Ship Twice as Many Smartphones Compared to Previous Quarter

Snapdragon 670 Vs Exynos 7884 Vs Snapdragon 835: Performance and Other Parameters Compared

Starting off with the basics, all four of today's processors are manufactured on the '10nm' process node. Google's Pixel 3a smartphones are the first American manufactured gadgets that use the Snapdragon 670; a processor that's made more appearances in gadgets that are available to customers in Eastern markets. The chip is also the only one out of the Exynos 7884 and the Snapdragon 835 to be manufactured on the 10nm LPP (Low-Power-Plus) node.

The Snapdragon 670 also has another distinct advantage over Qualcomm's older chipsets and products from Samsung. Its CPU is modeled on ARM's Cortex A75 and Cortex A55 cores. All processors save Apple's are manufactured by Samsung, and while the Snapdragon 835 might be a former flagship, the Snapdragon 670 is the better processor for a mid-range device equipped with today's software needs.

Pixel 3a/XL: Galaxy J7: Galaxy A6: Pixel 2: Galaxy S8:
Processor: Snapdragon 670 Exynos 7884 Exynos 7884 Snapdragon 835 Snapdragon 835
CPU: 2 x (Kryo 360 Gold @ 2.0 GHz), 4 x (Kryo 360 Silver @ 1.7GHz) 2 x (Cortex A73 @ 2.2 GHz), 6 x (Cortex A53 @ 1.76GHz) 2 x (Cortex A73 @ 2.2 GHz), 6 x (Cortex A53 @ 1.76GHz 4 x (Kryo 280 Gold @ 2.45GHz), 4 x (Kryo 280 @ 1.9GHz) 4 x (Kryo 280 Gold @ 2.45GHz), 4 x (Kryo 280 @ 1.9GHz)
GPU: Adreno 615 Mali G51 Mali G51 Adreno 540 Adreno 540
Process: 10nm LPP 14nm 14nm 10nm LPE 10nm LPE
Memory: LPDDR4X LPDDR4 LPDDR4 LPDDR4X LPDDR4X
ISP: Spectra 250 N/A N/A Spectra 180 Spectra 180

 

Out of all these processors, the Snapdragon 670 leads in nearly every aspect. While the Pixel 2* and Galaxy S8's CPUs are clocked higher, the 670 is built to improve power efficiency. The chipset's CPU's 2+6 core arrangement is a testament to this fact, as Qualcomm has segregated low-power workloads across more cores in its latest middle-tier smartphone SoC's CPU. The Snapdragon 670's Kryo 360 Gold and Silver cores are based on ARM's Cortex A75 and A55 derivatives respectively.

On the other hand, the Snapdragon 835's Kryo 280 cores are of an older design developed from the British chip house's A73 reference framework. A direct comparison of the 835 and the 60 also reveals better graphics and imaging processing capabilities. In fact, the only metric of performance where Qualcomm's Snapdragon 670 SoC lags behind its older cousin is network connectivity - a fact also noted in our coverage of Qualcomm's Snapdragon 670 launch.

The 670 has a clear advantage in its manufacturing process, and the SoC is fabricated using a performance node more advanced than that of either the Exynos 7884 or the Snapdragon 835. These gains are not reflected in its GPU (the Adreno 615), which is constrained by the 670's power efficiency requirements.

Adreno 615: Adreno 540: Mali G51:
Gflops: 358 567 154
ALUs: 128 256 12/core
Clock: 700MHz 710MHz 650MHz

 

GPU wise, it's a trade-off. While the Adreno 540 packs a heavier punch, the Adreno 615 is optimized for power consumption. This is understandable, as users should not expect heavy duty computational performance from mid-range gadgets. The Pixel 3a has a $399 price tag, while the Galaxy S8, despite being two years old, will set you back $499. Looking at the numbers, you'll struggle with PUBG on the Pixel 3a; if you're looking for a gadget to handle the game, get yourself a Samsung Galaxy S8. The Adreno 540 will ensure solid performance with the game.

The Pixel 3a isn't designed for gaming. Instead, Google has attempted to bring down the exclusivity of its camera software to a lower price point. At that end, the Snapdragon 670 does not fail to disappoint and has a clear leg up over the Snapdragon 835. In fact, we wouldn't be surprised if Google chose the 670 primarily due to the fact that it includes a heftier ISP (Image Signal Processor) than the Snapdragon 835 does.

Snapdragon 835: Snapdragon 670: Exynos 7884:
ISP: Spectra 180 Spectra 250: Samsung's custom ISP
Support: Dual 14-bit support for a 32MP single or a 16MP dual camera. 192MP single camera, 16MP with 30fps dual camera Single 32MP or dual 16MP

 

One final win for the Snapdragon 670 is with the DSP. It's what Apple popularized by dubbing as the 'Neural Engine' on the A11. Qualcomm's been using a separate chunk of its SoC dies to compute the necessary calculations for applications that involve neural nets and vector mapping. With the growth in popularity of AR and photography, the DSP is playing an important role in today's SoCs.

The Qualcomm Snapdragon 670 features the Hexagon 685 DSP while the Snapdragon 835 has the older Hexagon 682. Both are a part of Qualcomm's QDSP6 V6 68X lineup of DSPs. While both have adequate support for machine learning frameworks, vector extensions and image processing, the Hexagon 685 is better suited to Artificial Intelligence and photographic processing.

Snapdragon 670

Conclusion:

To conclude, the Google Pixel 3a lineup will give other mid-rangers a solid run for the money, if analyzed in terms of the SoC only. Qualcomm's Snapdragon 670 is a processor better suited to the current needs of the smartphone world and a device that wants to keep an affordable price tag.

The primary selling point of the Pixel 3as is their camera performance and Google's bloatware free software on the smartphones purchased directly through the company. Whether the pair stand the test of time will depend on their build quality, and the quality assurance tests carried out by the company. Their results will only become available once a sufficient amount of time has passed.

Thoughts? Let us know what you think in the comments section below and stay tuned. We'll keep you updated on the latest.

Products mentioned in this post

Galaxy S8
Galaxy S8
USD 374.99
Google Pixel
Google Pixel
USD 105.64
Pixel 2
Pixel 2
USD 205.99

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