Early
Google Pixel 4a performance review compares the 2020 mid-range Pixel to the
Pixel 4, Pixel 3a, and Pixel 3 XL
If there wasn’t a
global pandemic to worry about, then Google would have held its
annual developer conference, Google I/O, in Mountain View, California this
week. At last year’s I/O, Google unveiled its first-ever mid-range Pixel
devices, the Pixel 3a and 3a XL. This year, we’re expecting Google to follow-up
with a new mid-range Pixel smartphone called the Pixel 4a. We don’t know when
exactly this 2020 mid-range Pixel will be announced, but thanks to leaks, we
know pretty much all there is to know about it. Ahead of the Google Pixel 4a
announcement, we can detail the phone’s performance thanks to benchmarks
performed on pre-release hardware.
To date, the most
substantive leaks of the Pixel 4a have come from Cuban YouTuber Julio
Lusson who runs the TecnoLike Plus channel. Last week, he shared
multiple photos he took from his pre-release Pixel 4a, giving us an early
look at the camera performance of Google’s 2020 mid-range Pixel. Today, he
has published a video on his YouTube channel showcasing the performance of this
upcoming smartphone in various benchmarking applications. He shared the raw
results with us before publishing the video, allowing us to compile and analyze
the data into the below tables and charts. Take note that since he performed
these benchmarks on pre-release hardware running pre-release software, there’s a
chance that the retail units may perform slightly better in benchmarks if
Google has further optimized the performance.
Julio’s video below
shows him running the Pixel 4a through multiple benchmarks, and it even offers
a few glimpses at games like The Legend of Zelda: The Wind Waker for
the Nintendo GameCube (via Dolphin Emulator) and PUBG Mobile running
on the device. The video is in Spanish, though, so keep reading below if you’re
interested in the benchmark results, we put together.
Test Devices – Pixel
4a, 4, 3 XL, 3a XL, and the latest QRD
The Google Pixel 4a is
powered by the Qualcomm Snapdragon 730 mobile platform, which is
manufactured by Samsung using an 8nm LPP process. The Snapdragon 730 has an
octa-core CPU consisting of 2 clusters: 2 ARM Cortex-A76-based CPU cores
clocked at up to 2.2GHz and 6 ARM Cortex-A55-based CPU cores clocked at up to
1.8GHz. The GPU is Qualcomm’s Adreno 618.
The Snapdragon 730 is
no longer Qualcomm’s best mid-range processor as that crown goes to the
Snapdragon 765, but the 730 is still a significant jump up from the Snapdragon
670 found in the Pixel 3a and 3a XL. We can expect noticeable bumps in CPU
performance because of the difference in the architecture between the ‘Performance’
CPU cores. We can also expect the Snapdragon 730 in the Pixel 4a to be more
power-efficient than the Snapdragon 670 in the Pixel 3a because of the more
modern manufacturing process, though our benchmarks won’t reflect this
improvement. In terms of real-world performance, the Google Pixel 4a should
noticeably outperform the Pixel 3a because of the better processor, better GPU,
higher memory capacity, and faster storage technology.
For good measure, we
also added benchmark results from the Google Pixel 4 (powered by the Qualcomm
Snapdragon 855), the Google Pixel 3 XL (powered by the Qualcomm Snapdragon
845), and the latest Qualcomm Reference Device (powered by the Qualcomm
Snapdragon 865). We collected most of these benchmark results back in December
when we benchmarked the Snapdragon 865. We’re fairly certain the
upcoming Google Pixel 5 won’t feature the Snapdragon 865, but we thought
it would still be interesting to see how much of a performance gap there is
between Google’s 2020 mid-range Pixel and the best hardware you can find on any
Android device. The Pixel 5 is instead expected to feature the Snapdragon 765,
but we don’t have a device with this processor at our disposal yet since few
devices with this platform are available outside of China.
|
Qualcomm Reference
Device (QRD)
|
Google Pixel 4
|
Google Pixel 3 XL
|
Google Pixel 4a
|
Google Pixel 3a XL
|
Device Name
|
Qualcomm Snapdragon
865
|
Qualcomm Snapdragon
855
|
Qualcomm Snapdragon
845
|
Qualcomm Snapdragon
730
|
Qualcomm Snapdragon
670
|
Software
|
Android 10
|
Android 10
|
Android 10
|
Android 10
|
Android 10
|
Display
|
2880×1440 @ 60Hz
|
2280×1080 @ 60Hz
|
2960×1440 @ 60Hz
|
2340×1080 @ 60Hz
|
2160×1080 @ 60Hz
|
Memory
|
12GB LPDDR5
|
6GB LPDDR4X
|
4GB LPDDR4X
|
6GB LPDDR4X
|
4GB LPDDR4X
|
Storage
|
128GB UFS 3.0
|
64GB UFS 2.1
|
64GB UFS 2.1
|
64GB UFS 2.1
|
64GB eMMC 5.1
|
Here is an overview of
the specifications for the Qualcomm Snapdragon 865, Qualcomm Snapdragon 855,
Qualcomm Snapdragon 845, Qualcomm Snapdragon 730, and Qualcomm Snapdragon 670.
Quick Overview of Each
Benchmark
·
AndroBench: AndroBench is a fairly old benchmark with an
equally dated design, but it’s still the go-to for storage testing. It tests
the speed of sequential read/write, random read/write, and SQLite insert,
update, and delete operations. A sequential read/write is an operation that
involves reading/writing storage blocks that are contiguous, while a random
read/write involves reading/writing randomly scattered storage blocks. SQLite
describes a type of database management system; developers dealing with large
databases often have to make SQLite calls to retrieve or modify the database.
We can get a good idea of the storage performance of an Android device with
AndroBench. By default, the benchmark writes a 64MP file with either 32MB or
4KB buffer sizes for sequential and random read/writes respectively, and an
SQLite transaction size of 1. The speed of the former operation is measured in
MB/s while the latter in Queries Per Second (QPS).
·
AnTuTu: This is a holistic benchmark. AnTuTu tests
the CPU, GPU, and memory performance, while including both abstract tests and,
as of late, relatable user experience simulations (for example, the subtest
which involves scrolling through a ListView). The final score is weighted
according to the designer’s considerations.
·
GeekBench: A CPU-centric test that uses several
computational workloads including encryption, compression (text and images),
rendering, physics simulations, computer vision, ray tracing, speech
recognition, and convolutional neural network inference on images. The score
breakdown gives specific metrics. The final score is weighted according to the
designer’s considerations, placing a large emphasis on integer performance
(65%), then float performance (30%), and finally, crypto (5%).
·
GFXBench: Aims to simulate video game graphics
rendering using the latest APIs. Lots of onscreen effects and high-quality
textures. Newer tests use Vulkan while legacy tests use OpenGL ES 3.1. The
outputs are frames during test and frames per second (the other number divided
by the test length, essentially), instead of a weighted score.
·
Aztec
Ruins: These tests are the
most computationally heavy ones offered by GFXBench. Currently, top mobile
chipsets cannot sustain 30 frames per second. Specifically, the test offers
really high polygon count geometry, hardware tessellation, high-resolution
textures, global illumination and plenty of shadow mapping, copious particle
effects, as well as bloom and depth of field effects. Most of these techniques
will stress the shader compute capabilities of the processor.
·
PCMark
2.0: Tests the
device as a complete unit. It simulates everyday use cases that can implement
abstract algorithms and a lot of arithmetic; the difference is that these are
dispatched within an application environment, with a particular practical
purpose, and handled by API calls and Android libraries common to multiple
applications. The test will output a variety of scores corresponding to the
various subtests, which will be detailed below; the composite, work 2.0 score
is simply the geometric mean of all of these scores, meaning all tests are
weighted equally.
Benchmark Results
AnTuTu isn’t my
preferred benchmark, especially after it got
booted off the Play Store, but there’s no denying it’s one of the
most popular benchmarks for Android devices. In this test, the Pixel 4a scores
overall about ~48% as high as the Qualcomm Reference Device and ~70% as high as
the Pixel 4, but it does about as well as the Pixel 3 XL and substantially
better than the Pixel 3a XL. When we looked at AnTuTu’s sub scores, we can see
that the Pixel 4a scores fairly well in the CPU, Memory, and UX tests but falls
significantly behind all the Snapdragon 8-series processors we tested when it
comes to the GPU tests. In fact, the Pixel 4a outperformed the Pixel 3 XL in
most of AnTuTu’s tests except for the GPU ones, where the Pixel 4a performed
50% to 60% as well as the Pixel 3 XL. The Pixel 4a’s performance in AnTuTu’s
Memory tests is about on par with that of the Pixel 4 and Pixel 3 XL—no
surprise, though, since all of these devices have similar memory
configurations. The Pixel 4a’s overall UX score in AnTuTu is also about on par
with that of the Pixel 4, but it’s about 35-36% higher than the scores for the
Pixel 3 XL and Pixel 3a XL. Out of all of these devices, however, the Pixel 4
will still offer the best real-world UI performance since we can’t discount the
fact that it’s the only Pixel device with a 90Hz refresh rate panel. Overall,
the Pixel 4a outperforms the Pixel 3a XL in nearly every test in AnTuTu while
it unsurprisingly underperforms the QRD in every test.

PCMark is one of my
favorite benchmarks because of its emphasis on real-world performance. While
there’s a big gap in the scores between the Pixel 4a and the Pixel 3a XL,
there’s a much smaller gap in the scores between the former device and the
Pixel 4 or Pixel 3 XL. The QRD predictably blows the competition out of the
water because of its superior hardware across the board, so it’s not even worth
analyzing its sub scores. The Pixel 4a’s sub scores for PCMark’s Writing 2.0
and Photo Editing 2.0 tests are much higher (44% and 56% respectively) than the
Pixel 3a XL’s, which is good news for users looking to perform basic document
and image editing tasks on their device.