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Xiaomi 12S Ultra 512GB vs Xiaomi 12X (2021) 256GB: Specs & Scores

Created date: 2022-07-19 22:22:30

Xiaomi 12S Ultra 512GBXiaomi 12X (2021) 256GB
Xiaomi 12S Ultra 512GBXiaomi 12X (2021) 256GB

Are you having trouble comparing the differences in features and performance of the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB", 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.

Xiaomi 12S Ultra 512GBXiaomi 12X (2021) 256GB
Xiaomi 12S Ultra 512GB

Xiaomi 12X (2021) 256GB

General rating:
Portabilityrating-image3.0
60/100
rating-image3.6
71/100
Weightrating-image2.3
46/100
rating-image3.0
60/100
Size of screenrating-image4.6
91/100
rating-image4.5
90/100
Screen clarityrating-image4.4
88/100
rating-image4.3
85/100
Battery durationrating-image
- /100
rating-image
- /100
Processing capabilityrating-image5.0
100/100
rating-image5.0
99/100
Memory capacityrating-image5.0
99/100
rating-image5.0
99/100
Storage capacityrating-image4.8
95/100
rating-image4.6
91/100
Rear camera functionrating-image4.9
97/100
rating-image4.9
98/100
Front camera functionrating-image4.9
97/100
rating-image4.9
97/100

Compare Performance and Usability

Size comparison of "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB". 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 "Xiaomi 12S Ultra 512GB" is 75.0mm wide, 163.2mm tall, and 9.1mm thick. The "Xiaomi 12X (2021) 256GB" is 69.9mm tall, 152.7mm wide, and 8.2mm thick.

The "Xiaomi 12X (2021) 256GB" is also more compact than the "Xiaomi 12S Ultra 512GB" in terms of the thickness of the devices. The "Xiaomi 12X (2021) 256GB" is easier than the "Xiaomi 12S Ultra 512GB" to hold with one hand, and you are less likely to accidentally drop it. If you're looking for a smartphone that fits nicely in your hand and can be gripped firmly, we recommend buying the "Xiaomi 12X (2021) 256GB" rather than the "Xiaomi 12S Ultra 512GB".

There is no real difference in length or width between the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB", 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.

Comparing the overall size of the main unit, the "Xiaomi 12X (2021) 256GB" is smaller than the "Xiaomi 12S Ultra 512GB". As a result, it is easier to use the "Xiaomi 12X (2021) 256GB" with one hand compared to the "Xiaomi 12S Ultra 512GB", and its size makes it more comfortable to carry around. For this reason, the "Xiaomi 12X (2021) 256GB" is recommended.

ScoreDimensions (width x height x thickness)
Xiaomi 12S Ultra 512GB60/10075.0mm x 163.2mm x 9.1mm
Xiaomi 12X (2021) 256GB71/10069.9mm x 152.7mm x 8.2mm

Which one is easier to hold, "Xiaomi 12S Ultra 512GB" or "Xiaomi 12X (2021) 256GB"? 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 "Xiaomi 12S Ultra 512GB" weighs 225.0g. The "Xiaomi 12X (2021) 256GB" clocks in at 176.0g. If you compare the weight of the two, the "Xiaomi 12X (2021) 256GB" is a considerably lighter smartphone than the "Xiaomi 12S Ultra 512GB", with a difference of about 49g. Because of this, the "Xiaomi 12X (2021) 256GB" puts less of a burden on the fingers and wrists than the "Xiaomi 12S Ultra 512GB". If you want a smartphone that won't tire your hands out even when using it for a long time, we recommend that you buy the "Xiaomi 12X (2021) 256GB" rather than the "Xiaomi 12S Ultra 512GB".

ScoreWeight
Xiaomi 12S Ultra 512GB46/100225.0g
Xiaomi 12X (2021) 256GB60/100176.0g

Which is better in terms of display, "Xiaomi 12S Ultra 512GB" or "Xiaomi 12X (2021) 256GB"?

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 "Xiaomi 12S Ultra 512GB" is 6.73inch, and 6.28inch on the "Xiaomi 12X (2021) 256GB". The screens of the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB" 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
Xiaomi 12S Ultra 512GB91/1006.73inch
Xiaomi 12X (2021) 256GB90/1006.28inch

Which one has a better display, "Xiaomi 12S Ultra 512GB" or "Xiaomi 12X (2021) 256GB"?

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 "Xiaomi 12S Ultra 512GB" has a 1440 x 3200 resolution and a pixel density of 521ppi. The "Xiaomi 12X (2021) 256GB", on the other hand, has a screen resolution of 1080 x 2400 and a pixel density of 419ppi. There is not much of a difference in the pixel resolutions of the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB", 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
Xiaomi 12S Ultra 512GB88/100521ppi
Xiaomi 12X (2021) 256GB85/100419ppi

How is the battery duration of "Xiaomi 12S Ultra 512GB" different from that of "Xiaomi 12X (2021) 256GB" ? 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.

ScoreBattery capacity
Xiaomi 12S Ultra 512GB - /100
Xiaomi 12X (2021) 256GB - /100

Which is better in terms of CPU function, "Xiaomi 12S Ultra 512GB" or "Xiaomi 12X (2021) 256GB"?

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 "Xiaomi 12S Ultra 512GB" is equipped with a Qualcomm SM8475 Snapdragon 8+ Gen 1 processor, and its performance speed is 3.19GHz+2.75GHz+1.8GHz×8(8.0-cores). The "Xiaomi 12X (2021) 256GB" uses an Qualcomm SM8250 CPU that performs at a speed of 3.2GHz+2.42GHz+1.8GHz×8(8.0-cores). There is also no real discrepancy between the CPU performances of the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB". Because of this, both phones will feel practically identical in terms of smoothness when running apps and ease of game play. This is why it is better to compare them based on other aspects of performance and function.

ScoreCPU specs
Xiaomi 12S Ultra 512GB100/1003.19GHz+2.75GHz+1.8GHz×8(8.0-cores)
Xiaomi 12X (2021) 256GB99/1003.2GHz+2.42GHz+1.8GHz×8(8.0-cores)

How is "Xiaomi 12S Ultra 512GB" different from "Xiaomi 12X (2021) 256GB" 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 "Xiaomi 12S Ultra 512GB" has 12.0GB of memory. The "Xiaomi 12X (2021) 256GB", on the other hand, has 12.0GB. Memory performance is roughly the same for both the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB"; as a result, multitasking, playing 3D games, and using VR feels the same on both devices. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreRAM size
Xiaomi 12S Ultra 512GB99/10012.0GB
Xiaomi 12X (2021) 256GB99/10012.0GB

Which has a better storage capacity, "Xiaomi 12S Ultra 512GB" or "Xiaomi 12X (2021) 256GB"?

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 "Xiaomi 12S Ultra 512GB" has 512.0GB of storage, while the "Xiaomi 12X (2021) 256GB" has 256.0GB. There is no real difference between the "Xiaomi 12S Ultra 512GB"and "Xiaomi 12X (2021) 256GB" '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
Xiaomi 12S Ultra 512GB95/100512.0GB
Xiaomi 12X (2021) 256GB91/100256.0GB

Compare the rear cameras of "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB". 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 "Xiaomi 12S Ultra 512GB" has 48.0MP. The "Xiaomi 12X (2021) 256GB" has 50.0MP. The rear facing cameras of the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB" 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
Xiaomi 12S Ultra 512GB97/10048.0MP
Xiaomi 12X (2021) 256GB98/10050.0MP

Which has a front camera with better picture quality, "Xiaomi 12S Ultra 512GB" or "Xiaomi 12X (2021) 256GB"?

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 "Xiaomi 12S Ultra 512GB" has a resolution of 32.0MP. The "Xiaomi 12X (2021) 256GB"'s has 32.0MP. There is little difference between the camera capabilities and the pixel density of the "Xiaomi 12S Ultra 512GB" and "Xiaomi 12X (2021) 256GB"'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
Xiaomi 12S Ultra 512GB97/10032.0MP
Xiaomi 12X (2021) 256GB97/10032.0MP

Compare Performance Specs

Xiaomi 12S Ultra 512GBXiaomi 12X (2021) 256GB
ImageXiaomi 12S Ultra 512GBXiaomi 12X (2021) 256GB
MakerXiaomiXiaomi
Release date2022-07-092021-12-31
ColorBlack/Dark GreenBlack/Blue/Pink
OSAndroidAndroid
Dimensions (width x height x thickness)75.0mm x 163.2mm x 9.1mm69.9mm x 152.7mm x 8.2mm
Weight225.0g176.0g
Display size6.73inch6.28inch
Display typeLTPO2 AMOLEDOLED
Screen resolution (width x height)1440 x 32001080 x 2400
Pixel density521ppi419ppi
ChipsetQualcomm SM8475 Snapdragon 8+ Gen 1Qualcomm SM8250
CPU specs3.19GHz+2.75GHz+1.8GHz×8(8.0-cores)3.2GHz+2.42GHz+1.8GHz×8(8.0-cores)
RAM size12.0GB12.0GB
Storage size512.0GB256.0GB
Rear-camera resolution48.0MP50.0MP
Front-camera resolution32.0MP32.0MP

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