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Compare OnePlus 8 (2020) 256GB vs Oppo A91 (2019) 128GB

Created date: 2020-04-13 15:23:12, Updated date: 2021-10-20 14:03:52

OnePlus 8 (2020) 256GBOppo A91 (2019) 128GB
OnePlus 8 (2020) 256GBOppo A91 (2019) 128GB

Are you having trouble comparing the differences in features and performance of the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB", or unsure about their differences in ease-of-use, and wondering which to buy? We did a deep-dive comparison of the features, specs, and capabilities of these two smartphone, and provided our rating of which one was a better buy.

OnePlus 8 (2020) 256GBOppo A91 (2019) 128GB
OnePlus 8 (2020) 256GB

Oppo A91 (2019) 128GB

General rating:

80.5/100

(The 3017th of all smartphones)

73.3/100

(The 3352th of all smartphones)

Portability
66/100
65/100
Weight
58/100
61/100
Size of screen
90/100
90/100
Screen clarity
84/100
85/100
Battery duration
80/100
80/100
Processing capability
98/100
92/100
Memory capacity
99/100
93/100
Storage capacity
91/100
90/100
Rear camera function
97/100
97/100
Front camera function
75/100
75/100

Compare Performance and Usability

Size comparison of "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB". Which one would you choose?

Your device's size has a huge influence on how easy it is to hold or to operate with one hand. The smaller your device's width, the easier it will be to hold, but you'll also need to take device thickness into account. And when the length and width are both smaller, you'll find that it's much easier for you to operate it one-handed, since your fingers will find it much easier to reach where you want them to. On the other hand, longer lengths and wider widths might lead to devices that are hard to carry in your pocket, bulky even when you keep them in your bag, and all around less portable.

The "OnePlus 8 (2020) 256GB" is 72.9mm wide, 160.2mm tall, and 8.0mm thick. The "Oppo A91 (2019) 128GB" is 73.3mm tall, 160.2mm wide, and 7.9mm thick.

There is no real difference between the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB" when comparing their width, thickness, and slimness; they are both around the same in terms of one-handed ease of use and carry. Because of this, it is better to compare them based on other aspects of performance and function.

There is no real difference in length or width between the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB", so they are both about the same in terms of usability, ease of carry, and bulkiness. Because of this, it is better to compare them based on other aspects of performance and function.

When comparing their sizes as a whole, there is no real difference between the "OnePlus 8 (2020) 256GB"and "Oppo A91 (2019) 128GB". Thus they are roughly the same in terms of ease of carry and one-handed use. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreDimensions (width x height x thickness)
OnePlus 8 (2020) 256GB66/10072.9mm x 160.2mm x 8.0mm
Oppo A91 (2019) 128GB65/10073.3mm x 160.2mm x 7.9mm

Which one is easier to hold, "OnePlus 8 (2020) 256GB" or "Oppo A91 (2019) 128GB"? Compare weight

The device weight will effect how quickly you tire from holding it, and how much stress is put on your wrist. The lighter it is, the longer you can hold it without feeling tired. Also, less stress on your wrist will make using it easier and more pleasant. Unless the weight is right for you, it might put too much strain on your body and make using it more stressful.

The "OnePlus 8 (2020) 256GB" weighs 180.0g. The "Oppo A91 (2019) 128GB" clocks in at 172.0g. The "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB" have around the same weight, so prolonged use will tire out fingers nd wrists to around the same degree. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreWeight
OnePlus 8 (2020) 256GB58/100180.0g
Oppo A91 (2019) 128GB61/100172.0g

Which is better in terms of display, "OnePlus 8 (2020) 256GB" or "Oppo A91 (2019) 128GB"?

Screen size influences how well you can control your device, as well as how clear the display is. With a large screen, the text and buttons in apps will display large enough so you'll be less likely to accidentally tap the button next to the one you were aiming for. Plus, you'll be able to enjoy more high-impact visuals for games and movies.

The screen size on the "OnePlus 8 (2020) 256GB" is 6.55inch, and 6.4inch on the "Oppo A91 (2019) 128GB". The screens of the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB" are roughly the same size, and so the ease of pressing app buttons are the same on both devices. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreDisplay size
OnePlus 8 (2020) 256GB90/1006.55inch
Oppo A91 (2019) 128GB90/1006.4inch

Which one has a better display, "OnePlus 8 (2020) 256GB" or "Oppo A91 (2019) 128GB"?

Pixel density influences how nice your device's screen looks, with high pixel densities making screens look more beautiful, and letting you get more out of your games and movies. Plus, the nicer you screen looks, the less strain you'll be putting on your eyes, so you'll tend to be able to use your device for longer before your eyes get tired.

The screen on the "OnePlus 8 (2020) 256GB" has a 1080 x 2400 resolution and a pixel density of 401ppi. The "Oppo A91 (2019) 128GB", on the other hand, has a screen resolution of 1080 x 2400 and a pixel density of 411ppi. There is not much of a difference in the pixel resolutions of the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB", so they are about the same in terms of clarity of image and gentleness on the eyes. For this reason it is better to compare them based on other aspects of performance and function.

ScorePixel density
OnePlus 8 (2020) 256GB84/100401ppi
Oppo A91 (2019) 128GB85/100411ppi

How is the battery duration of "OnePlus 8 (2020) 256GB" different from that of "Oppo A91 (2019) 128GB" ? See the differences

Battery performance has a big effect on the battery life of your device. However, a high battery capacity doesn't necessarily mean a long battery life. Rather, the rate of power consumption needs to be taken into consideration as well. The larger the screen and the higher the CPU performance, the higher the rate of power consumption on your battery.

The "OnePlus 8 (2020) 256GB" has a battery capacity of 4300.0mAh, while the "Oppo A91 (2019) 128GB" has a 4025.0mAh battery. The batteries of both the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB" perform to the same extent. There is also no difference in the battery capacities of the "OnePlus 8 (2020) 256GB" and the "Oppo A91 (2019) 128GB". Since their battery life is practically identical, it would be better to compare them based on other aspects of performance and function.

ScoreBattery capacity
OnePlus 8 (2020) 256GB80/1004300.0mAh
Oppo A91 (2019) 128GB80/1004025.0mAh

Which is better in terms of CPU function, "OnePlus 8 (2020) 256GB" or "Oppo A91 (2019) 128GB"?

Your CPU's speed will influence the processing power of the applications you run, and together with the number of cores in the CPU, as well as its clock frequency, will determine the processing power available for apps. The higher these performance factors, the smoother your games and apps will run. Conversely, if these factors are too low, your apps and games will be sluggish and struggle to run.

The "OnePlus 8 (2020) 256GB" is equipped with a Qualcomm SM8250 Snapdragon 865 processor, and its performance speed is 2.84GHz+2.42GHz+1.8GHz×8(8.0-cores). The "Oppo A91 (2019) 128GB" uses an Mediatek MT6771V Helio P70 CPU that performs at a speed of 2.1GHz+2.0GHz×8(8.0-cores). Comparing their CPU performance, the "OnePlus 8 (2020) 256GB" has higher specs than the "Oppo A91 (2019) 128GB". For this reason, applications run better on the "OnePlus 8 (2020) 256GB" compared to the "Oppo A91 (2019) 128GB", and games run very smoothly. Therefore, the "OnePlus 8 (2020) 256GB" is recommended.

ScoreCPU specs
OnePlus 8 (2020) 256GB98/1002.84GHz+2.42GHz+1.8GHz×8(8.0-cores)
Oppo A91 (2019) 128GB92/1002.1GHz+2.0GHz×8(8.0-cores)

How is "OnePlus 8 (2020) 256GB" different from "Oppo A91 (2019) 128GB" in terms of memory capacity?

Your device's multimedia performance and app stability are both influenced by the amount of memory it has available. The more memory, the more apps you can use simultaneously, while keeping everything stable and smooth. Plus, there'll be less chance of animations lagging or apps crashing. You also need to keep in mind that some games won't run at all if there's not enough memory available.

The "OnePlus 8 (2020) 256GB" has 12.0GB of memory. The "Oppo A91 (2019) 128GB", on the other hand, has 8.0GB. Comparing the memory performance, the "OnePlus 8 (2020) 256GB" has a larger memory capacity than the "Oppo A91 (2019) 128GB", with a difference of approximately 4GB. For this reason, multitasking is smoother on the "OnePlus 8 (2020) 256GB" than the "Oppo A91 (2019) 128GB", and applications are less likely to crash. Also, it is more enjoyable to play 3D games and VR on the "OnePlus 8 (2020) 256GB". For this reason, the "OnePlus 8 (2020) 256GB" is recommended.

ScoreRAM size
OnePlus 8 (2020) 256GB99/10012.0GB
Oppo A91 (2019) 128GB93/1008.0GB

Which has a better storage capacity, "OnePlus 8 (2020) 256GB" or "Oppo A91 (2019) 128GB"?

Storage capacity determines the amount of data you'll be able to save on your device. The more storage you have, the more photos you can take and the more apps you can install. Plus, if your smartphone is compatible with SD cards, then you can increase the amount of available storage. However, SD cards have a slower writespeed, making them less desirable in terms of performance, and users should be aware that it won't be possible to transfer all kinds of data to the card.

The "OnePlus 8 (2020) 256GB" has 256.0GB of storage, while the "Oppo A91 (2019) 128GB" has 128.0GB. There is no real difference between the "OnePlus 8 (2020) 256GB"and "Oppo A91 (2019) 128GB" 's ROMs and storage capacities, so both can store roughly the same amount of photographs and apps. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreStorage size
OnePlus 8 (2020) 256GB91/100256.0GB
Oppo A91 (2019) 128GB90/100128.0GB

Compare the rear cameras of "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB". Which one has better picture quality?

One factor in how well your rear camera (the camera on the back of your device) performs is its megapixel count. With a higher megapixel count, you'll be able to take photos with sharper detail, photos that stay clear and sharp even when printed.

The main camera on the "OnePlus 8 (2020) 256GB" has 48.0MP. The "Oppo A91 (2019) 128GB" has 48.0MP. The rear facing cameras of the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB" have roughly the same performance, so the quality of the photograph and video footage they can capture is around the same. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreRear-camera resolution
OnePlus 8 (2020) 256GB97/10048.0MP
Oppo A91 (2019) 128GB97/10048.0MP

Which has a front camera with better picture quality, "OnePlus 8 (2020) 256GB" or "Oppo A91 (2019) 128GB"?

One indication of how well your forward facing camera (the camera on the same side as your device's screen) performs is how many megapixels it has. More megapixels means you'll be able to take photos with sharper detail, that still look amazing printed out.

The forward-facing camera on the "OnePlus 8 (2020) 256GB" has a resolution of 16.0MP. The "Oppo A91 (2019) 128GB"'s has 16.0MP. There is little difference between the camera capabilities and the pixel density of the "OnePlus 8 (2020) 256GB" and "Oppo A91 (2019) 128GB"'s front facing cameras, so the quality of photographs and video footage is virtually the same. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreFront-camera resolution
OnePlus 8 (2020) 256GB75/10016.0MP
Oppo A91 (2019) 128GB75/10016.0MP

Compare Performance Specs

OnePlus 8 (2020) 256GBOppo A91 (2019) 128GB
ImageOnePlus 8 (2020) 256GBOppo A91 (2019) 128GB
MakerOnePlusOppo
Release date2020-04-212019-12-20
ColorOnyx Black/Glacial Green/Interstellar Glow/Polar SilverLightening Black/Unicorn White/Blazing Blue/Red
OSAndroidAndroid
Dimensions (width x height x thickness)72.9mm x 160.2mm x 8.0mm73.3mm x 160.2mm x 7.9mm
Weight180.0g172.0g
Display size6.55inch6.4inch
Display typeFluid AMOLEDAMOLED
Screen resolution (width x height)1080 x 24001080 x 2400
Pixel density401ppi411ppi
Battery capacity4300.0mAh4025.0mAh
ChipsetQualcomm SM8250 Snapdragon 865Mediatek MT6771V Helio P70
CPU specs2.84GHz+2.42GHz+1.8GHz×8(8.0-cores)2.1GHz+2.0GHz×8(8.0-cores)
RAM size12.0GB8.0GB
Storage size256.0GB128.0GB
Rear-camera resolution48.0MP48.0MP
Front-camera resolution16.0MP16.0MP

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